2024/09/20 更新

写真a

パンディ シャム スディル
パンディ シャム スディル
PANDEY Shyam sudhir
Scopus 論文情報  
総論文数: 0  総Citation: 0  h-index: 25

Citation Countは当該年に発表した論文の被引用数

所属
大学院生命体工学研究科 生体機能応用工学専攻
職名
教授
メールアドレス
メールアドレス
研究室住所
福岡県北九州市若松区ひびきの2-4
研究室電話
+819062986705
プロフィール
1997年、インド・ニューデリーの国立物理研究所にて、有機共役系ポリマーの合成、特性評価、応用の分野で博士号を取得。1998年、ポストドクトラルフェローとして来日。1998年から2001年まで、九州工業大学で福岡IST主催のポスドクとして光機能性材料とデバイスの研究に従事した。2001年~2003年日本学術振興会特別研究員(ソフトアクチュエータ・人工筋肉)、2003年~2007年ナレッジクラスター招待研究員(タンパク質バイオチップ)を務める。2005年、グルコースバイオセンサーの開発でインド政府研究開発公社より国家技術賞を受賞し、現在製造・販売されている。2009年から2012年まで九州工業大学で助教授として勤務し、次世代太陽電池への応用を目指した新規光機能性材料の設計・開発に携わる。2012年4月~3月、同研究所にて有機光機能性材料デバイス研究グループを立ち上げ、次世代電池、有機電子デバイス、生体画像センサーの研究開発に携わる。現在、九州工業大学大学院生命システム工学研究科グリーンエレクトロニクス専攻教授。国際的な査読付き雑誌に230以上の論文を発表し、インド、日本、ヨーロッパ、米国で約30の特許を取得している。色素増感太陽電池、有機太陽電池、量子化学計算、有機エレクトロニクス、有機導電性高分子、バイオセンサー、タンパク質バイオチップの研究を行っている。
外部リンク

研究キーワード

  • 有機エレクトロニクス

  • 光機能性材料の設計、合成及び応用

  • 色素増感太陽電池

研究分野

  • ものづくり技術(機械・電気電子・化学工学) / 電子デバイス、電子機器

  • ナノテク・材料 / 機能物性化学

  • ナノテク・材料 / 構造材料、機能材料

  • ナノテク・材料 / 薄膜、表面界面物性

出身大学院

  • 1987年03月   ゴラクプール総合大学   化学研究科   修士課程・博士前期課程   修了   インド

取得学位

  • ゴラクプール総合大学  -  博士   1997年04月

学内職務経歴

  • 2022年04月 - 現在   九州工業大学   大学院生命体工学研究科   生体機能応用工学専攻     教授

  • 2014年04月 - 2022年03月   九州工業大学   大学院生命体工学研究科   生体機能応用工学専攻     准教授

  • 2012年04月 - 2014年03月   九州工業大学   大学院生命体工学研究科   生体機能専攻     准教授

  • 2009年04月 - 2012年03月   九州工業大学   大学院生命体工学研究科     助教

学外略歴

  • 2008年04月 - 2009年03月   財団法人福岡県産業・科学技術振興財団   研究員   日本国

  • 2003年10月 - 2007年03月   財団法人北九州産業学術推進機構   招聘研究員   日本国

  • 2001年09月 - 2003年09月   日本学術振興会九州工業大学   特別研究員   日本国

  • 1998年04月 - 2001年03月   財団法人福岡県産業・科学技術振興財団   博士研究員   日本国

所属学会・委員会

  • 2016年12月   International Conference on Computational Methods in Engineering and Health Sciences   日本国

  • 2016年07月 - 現在   9th International Conference on Materials for Advanced Technology (ICMAT-2017)   シンガポール共和国

論文

  • Fabrication of Nanobioengineered Interfaces Utilizing Quaternary Nanocomposite for Highly Efficient and Selective Electrochemical Biosensing of Urea 査読有り 国際誌

    Krishna Kumar, Kshitij RB Singh, Ritu S. Rathour, Jay Singh, Subrato Bhattacharya, Shyam S. Pandey*

    Langmuir ( American Chemical Society )   2024年09月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Nanobioengineered interfaces have gained attention owing to their small size and high surface area-to-volume ratio for utilization as a platform for highly selective and sensitive biosensing applications owing to the integration of biological molecules with engineered nanomaterials/nanocomposites. In this work, a novel Ag-complex, [(PPh3)2Ag(SCOf)]-based quaternary Ag–S–Zn–O nanocomposites (NCs), was synthesized through an environmentally-friendly process. The results revealed the formation of the NCs with an average crystallite size and particle size of 36.08 and 40.22 nm, respectively. In addition, this is the first study to utilize such NCs synthesized via a single-source precursor method, offering enhanced sensor performance due to their unique structural properties. Further, these NCs were used to fabricate a urease (Ur)/Ag–S–Zn–O NCs/ITO nanobioengineered electrode for precise and sensitive electrochemical biosensing of urea. The interfacial kinetic studies revealed quasi-reversible processes with high electron transfer rates and linear current responses, indicating efficient reaction dynamics. A high diffusion coefficient and low surface concentration suggested a fast diffusion-controlled process, affirming the electrode’s potential for rapid and sensitive urea detection. The biosensor demonstrated notable sensing properties such as high sensitivity (12.56 μA mM–1 cm–2) and a low detection limit (0.54 mM). The fabricated bioelectrode was highly selective and reproducible and demonstrated stability for up to 60 days. These results validate the potential of this nanobioengineered interface for next-generation biosensing applications, paving the way for advanced point-of-care diagnostics and real-time health monitoring.

    DOI: 10.1021/acs.langmuir.4c02457

    DOI: 10.1021/acs.langmuir.4c02457

  • High-Density, Nonvolatile, Flexible Multilevel Organic Memristor Using Multilayered Polymer Semiconductors 査読有り 国際誌

    Shubham Sharma*, Manish Pandey, Shuichi Nagamatsu, Hirofumi Tanaka, Kazuto Takashima Kazuto Takashima Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu 808-0196, Japan More by Kazuto Takashima , Masakazu Nakamura, and Shyam S. Pandey*

    ACS Applied Materials and Interfaces ( American Chemical Society )   16 ( 17 )   22282 - 22293   2024年04月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Nonvolatile organic memristors have emerged as promising candidates for next-generation electronics, emphasizingthe need for vertical device fabrication to attain a high density. Herein, we present a comprehensive investigation of high-performance organic memristors, fabricated in crossbar architecture with PTB7/Al-AlOx-nanocluster/PTB7 embedded between Alelectrodes. PTB7 films were fabricated using the Unidirectional Floating Film Transfer Method, enabling independent uniform filmfabrication in the Layer-by-Layer (LbL) configuration without disturbing underlying films. We examined the charge transportmechanism of our memristors using the Hubbard model highlighting the role of Al-AlOx-nanoclusters in switching-on the devices,due to the accumulation of bipolarons in the semiconducting layer. By varying the number of LbL films in the device architecture,the resistance of resistive states was systematically altered, enabling the fabrication of novel multilevel memristors. These multileveldevices exhibited excellent performance metrics, including enhanced memory density, high on−off ratio (>108), remarkable memoryretention (>105 s), high endurance (87 on−off cycles), and rapid switching (∼100 ns). Furthermore, flexible memristors werefabricated, demonstrating consistent performance even under bending conditions, with a radius of 2.78 mm for >104 bending cycles.This study not only demonstrates the fundamental understanding of charge transport in organic memristors but also introducesnovel device architectures with significant implications for high-density flexible applications.

    DOI: 10.1021/acsami.4c03111

    DOI: 10.1021/acsami.4c03111

    その他リンク: https://pubs.acs.org/doi/10.1021/acsami.4c03111

  • Photophysical Characterization and Biointeractions of NIR Squaraine Dyes for in Vitro and in Vivo Bioimaging 査読有り 国際誌

    Sai Kiran Mavileti, Galyna Bila, Valentyn Utka, Evgenia Bila, Tamaki Kato, Rostyslav Bilyy, Shyam S Pandey

    ACS Applied Biomaterials ( American Chemical Society )   7 ( 1 )   416 - 428   2023年12月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The increasing demand for reliable near-infrared (NIR) probes exhibiting enduring fluorescence in living systems and facile compatibility with biomolecules such as peptides, antibodies or proteins is driven by the increasing use of NIR imaging in clinical diagnostics. To address this demand, a series of carboxy-functionalized unsymmetrical squaraine dyes (SQ-27, SQ-212, and SQ-215) along with non-carboxy-functionalized SQ-218 absorbing and emitting in the NIR wavelength range were designed and synthesized followed by photophysical characterization. This study focused on the impact of structural variations in the alkyl chain length, carboxy functionality positioning, and spacer chain length on dye aggregation and interaction with bovine serum albumin (BSA) as a model protein. In phosphate buffer (PB), the absorption intensity of the dyes markedly decreased accompanied by pronounced shoulders indicative of dye aggregation, and complete fluorescence quenching was seen in contrast to organic solvents. However, in the presence of BSA in PB, there was a enhancement in absorption intensity while regaining the fluorescence coupled with a remarkable increase in the intensity with increasing BSA concentrations, signifying the impact of dye–BSA interactions on preventing aggregation. Further analysis of Job’s plot unveiled a 2:1 interaction ratio between BSA and all dyes, while the binding studies revealed a robust binding affinity (Ka) in the order of 107/mol. SQ-212 and SQ-215 were further tested for their in vitro and in vivo imaging capabilities. Notably, SQ-212 demonstrated nonpermeability to cells, while SQ-215 exhibited easy penetration and prominent cytoplasmic localization in in vitro studies. Injection of the dyes into laboratory mice showcased their efficacy in visualization, displaying stable and intense fluorescence in tissues without toxicity, organ damage, or behavioral changes. Thus, SQ-212 and SQ-215 are promising candidates for imaging applications, holding potential for noninvasive cellular and diagnostic imaging as well as biomarker detection when coupled with specific vectors in living systems.

    DOI: https://doi.org/10.1021/acsabm.3c00997

    DOI: https://doi.org/10.1021/acsabm.3c00997

    その他リンク: https://pubs.acs.org/doi/10.1021/acsabm.3c00997

  • Fabrication of solid-state dye-sensitized solar cells by controlled evaporation of solvents for creation of facile charge transport pathway 査読有り 国際誌

    Yuki Kurokawa, Takehito Kato, Shyam S. Pandey

    Physica Status Solidi-A ( Wiley )   220 ( 24 )   2300116 (1) - 2300116 (7)   2023年08月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Solid-state dye-sensitized solar cells (ss-DSSCs) based on MK-2 dye-sensitized TiO2 photoanode and the most commonly used I−/I3− redox electrolyte are successfully fabricated by the simple method of solidification of the injected liquid electrolyte under slow solvent evaporation. The use of the ionic liquid, which is solid at room temperature, and slow evaporation of solvent at low temperature is a key step for solidification toward the fabrication of ss-DSSCs. It has been demonstrated that ss-DSSCs thus fabricated not only retain about 80% of photoconversion efficiency (PCE) as compared to their liquid-state DSSCs counterpart but also maintain the device stability for more than 1000 h. PCE of the ss-DSSCs is found to increase as a function of the increasing concentration of the ionic liquid used for electrolyte preparation. In the case of ss-DSSCs with the ionic liquid concentration of 1.2 m, there is a good balance between PCE and durability leading to not only retention of about 70% of PCE as compared to its liquid-state DSSCs counterparts but also maintaining the stability of the solar cell for more than 1000 h stored at room temperature.

    DOI: https://doi.org/10.1002/pssa.202300116

    DOI: https://doi.org/10.1002/pssa.202300116

    Kyutacar

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300116

  • High field-effect mobility in oriented thin films of D-A type semiconducting polymers by engineering stable interfacial system 査読有り 国際誌

    Shubham Sharma Ajendra K. Vats Linjun Tang Feng Kaishan Jumpei Toyoda Shuichi Nagamatsu Yoshito Ando Masaaki Tamagawa Hirofumi Tanaka Manish Pandey Shyam S. Pandey

    Chemical Engineering Journal ( Elsevier )   469   143932(1) - 143932(1)   2023年08月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Conjugated polymers (CPs) have emerged as excellent organic semiconducting materials for flexible electronic applications. CPs exhibit a notably fast carrier transport along their main π-conjugated backbone followed by inter-chain hopping compelling the need to form large and ordered domains in thin films. Therefore, the formation of larger domains, along with their orientation, is critical in controlling the electrical properties of CP-based organic electronic devices. However, controlling the molecular ordering along with the formation of large aggregates is a challenge. In this work, the unidirectional floating film transfer method (UFTM) has been utilized to prepare oriented thin films of CPs, which is a highly facile, cost-effective and material utilization efficient technique. We have demonstrated that extent and direction of molecular orientation in the fabricated thin films can be tuned along with the higher degree of aggregation. The rheological aspects, especially viscosity, play a significant role in determining molecular ordering along with the formation of these large aggregates. Active control of viscosity to achieve a stable interfacial viscous system is paramount to achieving this, resulting in a very high mobility of 12.4 cm2V−1s−1.

    DOI: 10.1016/j.cej.2023.143932

    DOI: 10.1016/j.cej.2023.143932

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S1385894723026633

  • Smart Alginate Nanomaterials: Revolutionizing Food Across Delivery, Preservation, Packaging, Safety, and Waste Upcycling 査読有り 国際誌

    Shweta Rathee, Kshitij RB Singh, Sadhucharan Mallick, Jay Singh, Shyam S. Pandey, Ankur Ojha, Ravindra Pratap Singh

    Carbohydrate Polymer Technologies and Applications ( Elsevier )   2024年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    As the global population grows, the demand for safe food security aligned with sustainable development objectives becomes increasingly critical. This review delves into the innovative design techniques of stimuli-responsive smart alginate nanomaterials. It focuses on smart alginate hybrid nanomaterials and their nanocomposites that react to external stimuli. pH-responsive smart alginate hybrid nanomaterials are effectively utilized for the targeted delivery of bioactive components. Conversely, pH, temperature, specific analytes, and ionic strength-responsive smart alginate nanocomposites have food preservation, packaging, safety, and waste upcycling applications. This paper provides an in-depth examination of recent advancements in pH-responsive smart alginate hybrid nanomaterials, emphasizing targeted distribution systems, including nanoparticles, nanoliposome complexes, high internal phase Pickering emulsions, emulgels, nanogels, nanobioaerogels, and electrospun nanofibers. Moreover, the review highlights how smart alginate nanocomposites contribute to sustainable food preservation and upcycling of food waste, enhancing food safety. Detailed discussions on commercialization regulations underscore the importance of regulatory compliance and safety in deploying these advanced materials.

    DOI: https://doi.org/10.1016/j.carpta.2024.100568

    DOI: https://doi.org/10.1016/j.carpta.2024.100568

    その他リンク: https://www.sciencedirect.com/science/article/pii/S2666893924001488?via%3Dihub

  • Probing heavy metals in tropospheric particulate matter – An approach towards sustainability 査読有り 国際誌

    Abel Inobeme, Arunadevi Natarajan, Safalmani Pradhan, Charles Oluwaseun Adetunji, Ariola Devolli, Chetan Chauhan, John Tsado Mathew, Jonathan Inobeme, Kaushik Pal, Kshitij RB Singh, Shyam S. Pandey*

    Journal of Molecular Liquids ( Elsevier )   412   125822(1) - 125822(13)   2024年08月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Various organic and inorganic contaminants are increasingly found in the atmosphere due to several anthropogenic sources of alarming concern. Amongst the various classes of pollutants, heavy metals (HMs) have drawn global attention due to their bioaccumulation and biomagnification potential in cellular and sub-cellular structures of living organisms. In comparison to other media of dispersion of HMs, the mechanism involved in particulate matter (PM) in the atmosphere makes it easier for the transport of HMs over long distances at a global and regional scale due to the non-confinement of air masses. The transport of HMs through atmospheric PM requires close assessment and monitoring. At present, there is limited literature focusing on heavy metals in aerosols and dust. Most of the available studies have emphasized heavy metals in soil and water. The current review comprehensively highlights the various aspects of HMs including the sources, recent trends, and investigation models explored for the assessment and monitoring of HMs in PM and atmospheric aerosols, which will further help in achieving sustainable environmental monitoring aspects more precisely.

    DOI: 10.1016/j.molliq.2024.125822

    DOI: 10.1016/j.molliq.2024.125822

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0167732224018816?via%3Dihub

  • Study on the charge transport behaviour of MXene- polymer nanocomposite-based self-assembled floating films at the air-liquid interface 査読有り 国際誌

    Radhe Shyam, Shubham Sharma, Shyam S. Pandey, Takaaki Manaka, Rajiv Prakash

    Materials Today Electronics ( Elsevier )   9   100112(1) - 100112(11)   2024年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    This study explores the fabrication and charge transport behavior of MXene-polymer nanocomposite-based self-assembled floating films at the air-liquid interface. Utilizing ultrasonic dispersion of MXene nanosheets was integrated into a DPP-TTT polymer matrix, significantly enhancing the alignment and crystallization of the polymer chains. The films were fabricated using a unidirectional floating film transfer method (UFTM), which proved to be both simple and cost-effective. UV–visible and grazing incidence X-ray diffraction (GIXD) analyses confirmed increased π–π stacking and improved structural arrangement within the nanocomposites. Organic field-effect transistors (OFETs) fabricated from these films demonstrated that a 3% MXene inclusion resulted in the highest mobility, measuring 3.1 cm2V-1s-1 with an on-off ratio in the order of 104, compared to 1.3 cm2V-1s-1 in pristine DPP-TTT films. However, further increases in MXene content reduced mobility, emphasizing the importance of precise compositional tunin

    DOI: 10.1016/j.mtelec.2024.100112

    DOI: 10.1016/j.mtelec.2024.100112

    その他リンク: https://www.sciencedirect.com/science/article/pii/S277294942400024X?via%3Dihub

  • Synthesis and Characterization of Multifunctional Symmetrical Squaraine Dyes for Molecular Photovoltaics by Terminal Alkyl Chain Modifications 査読有り 国際誌

    Kota Mori, Yuki Kurokawa and Shyam S. Pandey*

    Colorants ( MDPI )   3 ( 3 )   198 - 216   2024年07月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Novel far-red sensitive symmetric squaraine (SQ) dyes with terminal alkyl chain modifications were designed, synthesized, and characterized, aiming towards imparting multifunctionalities such as photosensitization, dye aggregation prevention, and source of electrolyte components. The dye sensitizer SQ-80 with alkyl chain terminal modifications consisting of 1-methylimidazolium iodide was designed and synthesized as a new dye sensitizer for DSSCs based on symmetric SQ-4 without any terminal modification used as reference. Upon adsorption on the mesoporous TiO2 surface, SQ-80 demonstrated reduced dye aggregation and stronger binding to the TiO2 surface, leading to enhanced durability of DSSCs. Apart from the most common photosensitization behavior, the newly designed dye demonstrated multifunctionalities such as aggregation prevention and electrolyte functionality, utilizing iodine-based redox electrolytes in the presence and absence of I2 and LiI additives. In the absence of LiI and I2, a mixture of SQ-77 with alkyl chain terminal modifications consisting of iodide and SQ-80 demonstrated a photoconversion efficiency of 1.54% under simulated solar irradiation, which was about six times higher compared with the reference dye SQ-4 (0.24%) (having no alkyl chain terminal modification).

    DOI: 10.3390/colorants3030014

    DOI: 10.3390/colorants3030014

    その他リンク: https://www.mdpi.com/2079-6447/3/3/14

  • Synthesis and advances of smart heteroatom-sited coatings for anticorrosion applications 査読有り

    M. Swathika, Sharmila Chandran, Kshitij RB Singh, Ravindra Pratap Singh, Shyam S. Pandey, Arunadevi Natarajan

    Journal of the Taiwan Institute of Chemical Engineers ( Elsevier )   105639(1) - 105639(14)   2024年07月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Highlights

    Novel coating material for bore water, soil, and bacterial corrosion.


    A microphotograph of steel substrate immersed in bore water and soil reveals the anticorrosion behavior.


    Early-stage recognition of corrosion with highly pigmented metal oxides.


    Highest anticorrosive property was shown by epoxy-CoO nanomaterial.

    DOI: 10.1016/j.jtice.2024.105639

    DOI: 10.1016/j.jtice.2024.105639

  • Developing In2S3 upon Modified MgTiO3 Anchored on Nitrogen-doped CNT for Sustainable Sensing and Removal of Toxic Insecticide Clothianidin 査読有り 国際誌

    Soumya Ranjan Mishra, Vishal Gadore, Kshitij RB Singh, Shyam S. Pandey, Md. Ahmaruzzaman

    Environmental Research ( Elsevier )   259   119435(1) - 119435(23)   2024年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Herein, the study introduces a novel bifunctional In2S3/MgTiO3/TiO2@N-CNT (IMTNC) nanocomposite, which is poised to revolutionize the detection and removal of clothianidin (CLD) from aquatic environments by synergistic adsorption and photodegradation. Confirmation of the material’s synthesis was done using structural, optical, morphological, and chemical characterizations. An outstanding sensitivity of 2.168 μA/nM.cm2 with a linear range of 4–100 nM and a LOD of 0.04 nM, along with an exceptional elimination efficiency of 98.06 ± 0.84% for about 10 ppm CLD within 18 min was demonstrated by the IMTNC nanocomposite. Extensive studies were carried out to appraise the material’s effectiveness in the presence of various interfering species, such as cations, anions, organic compounds, and different water matrices, and a comprehensive assessment of its stability throughout several cycles was made. Response Surface Methodology (RSM) study was used to determine the ideal removal conditions for improved performance. In addition, the catalytic performance in removing various other pollutants was also analyzed. Adding In2S3 and developing N-doped Carbon Nanotubes (N-CNT) increased conductivity and higher electrochemical sensing skills, improving charge transfer and increasing photocatalytic activity. This research underscores the potential of the IMTNC nanocomposite as a promising candidate for advanced environmental sensing and remediation applications.

    DOI: 10.1016/j.envres.2024.119435

    DOI: 10.1016/j.envres.2024.119435

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0013935124013409?via%3Dihub

  • Role of Si and SiO2 in Optoelectronic Device Fabrication 査読有り 国際誌

    Harshita Rai , Kshitij RB Singh , Shyam S. Pandey, Arunadevi Natarajan

    Journal of Molecular Structure ( Elsevier )   1316   138994(1) - 138994(9   2024年06月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Silicon and its oxide deliver a dextrous way for engineering the successors of optoelectronic/photonic devices, by integrating fabrication techniques with heterostructured material possessing tuneable properties. Besides comprehensive knowledge, a collection of functional materials with device fabrication should be amplified. In general, silicon-based allied compounds can co-form with other materials like polymers, nanometal oxides, and organic/inorganic hybrid materials to deliver multiple electronic characteristics. A noteworthy and excellent performance of Si and its oxide secures a prominent position in the realm of the optoelectronics field. This study deliberates an exhaustive overview of advances in fabrication strategies, characteristics, Si/SiO2-based optoelectronic devices, and new materials used in this field. Additionally, this investigation spotlights the potential of Si/SiO2 in accentuating diverse applications like light-emitting diodes, solar cells, photodiodes, and phototransistors. In brief, this article will expose novel pathways of research and peregrination in this mushrooming field.

    DOI: 10.1016/j.molstruc.2024.138994

    DOI: 10.1016/j.molstruc.2024.138994

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0022286024015126?via%3Dihub

  • Advancing dye-sensitized solar cell performance with bifacial illumination: A novel Stack Formation Framework approach 査読有り

    Hussein A. AlSultan, Suhaidi Shafie, Mohd Nizar Hamidon, Ismayadi Ismail, Shyam S. Pandey, Fauzan Ahmad

    Optical Materials ( Elsevier )   153   115535(1) - 115535(10)   2024年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Dye-sensitized solar cells (DSSCs) are considered to be one of the promising photovoltaic devices in terms of low cost, low toxicity, and versatility. However, the issue of low power conversion efficiency (PCE) is still a main issue of those devices, especially in low light harvesting and the issue of electron–hole recombination that hinders the PCE of the device. This study aims to enhance the PCE by maximizing the light-harvesting without sacrificing the electron–hole separation by a novel approach of the Stack Formation Framework (SFF) for multi-layered Titanium Dioxide (TiO
    ) photoanodes in DSSCs by integrating bifacial illumination capabilities. The SFF method, leveraging both commercial and synthesized TiO
    pastes, now considers light absorption from both the front and rear sides of the device, aiming to harness the full potential of ambient light sources. Comparative analyses under varying illumination conditions reveal the T/sp-P25-T/sp (TPT) configuration’s superior efficiency (6.1%) and (3.8%) PCE in front and back respectively, with a notable increase in overall theoretical photocurrent (J
    ) to (15.99 mA) and (9.32 mA) in front and back illumination respectively. When both sides are utilized using a reflective mirror, the PCE reaches (9.9%). This work underscores the potential of bifacial DSSCs in maximizing energy capture and conversion, setting a new benchmark for photoanode performance in photovoltaic applications.

    DOI: 10.1016/j.optmat.2024.115535

    DOI: 10.1016/j.optmat.2024.115535

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0925346724007183?via%3Dihub

  • Clarifying the Dominant Role of Crystallinity and Molecular Orientation in Differently Processed Thin Films of Regioregular Poly(3-hexylthiophene) 査読有り 国際誌

    Kumar Vivek Gaurav, Harshita Rai, Kshitij RB Singh, Shubham Sharma,Yoshito Ando, and Shyam S. Pandey*

    Micromachine ( MDPI )   15 ( 6 )   677(1) - 677(16)   2024年05月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Conjugated polymers (CPs) offer the potential for sustainable semiconductor devices due to their low cost and inherent molecular self-assembly. Enhanced crystallinity and molecular orientation in thin films of solution-processable CPs have significantly improved organic electronic device performance. In this work, three methods, namely spin coating, dip coating, and unidirectional floating-film transfer method (UFTM), were utilized with their parametric optimization for fabricating RR-P3HT films. These films were then utilized for their characterization via optical and microstructural analysis to elucidate dominant roles of molecular orientation and crystallinity in controlling charge transport in organic field-effect transistors (OFETs). OFETs fabricated by RR-P3HT thin films using spin coating and dip coating displayed field-effect mobility (μ) of 8.0 × 10−4 cm2V−1s−1 and 1.3 × 10−3 cm2V−1s−1, respectively. This two-time enhancement in µ for dip-coated films was attributed to its enhanced crystallinity. Interestingly, UFTM film-based OFETs demonstrated μ of 7.0 × 10−2 cm2V−1s−1, >100 times increment as compared to its spin-coated counterpart. This superior device performance is attributed to the synergistic influence of higher crystallinity and molecular orientation. Since the crystallinity of dip-coated and UFTM-thin films are similar, ~50 times improved µ of UFTM thin films, this suggests a dominant role of molecular orientation as compared to crystallinity in controlling the charge transport.

    DOI: 10.3390/mi15060677

    DOI: 10.3390/mi15060677

  • Proliferating optoelectronic properties of doped ZnO nanoparticles 査読有り 国際誌

    Sharmila Chandran, Arthi Priscilla Ganesan, Nidhi Asthana, Shyam S. Pandey, Kshitij RB Singh, Arunadevi Natarajan

    Journal of Molecular Structure ( Elsevier )   1311   138310(1) - 138310(8))   2024年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Ag-doped ZnO nanocomposites were synthesized precisely by adopting a wet chemical method to explore their optoelectronic characteristics for LED applications. Characterization studies have progressed for substantiation of its structural, and functional characteristics in conjugation with the optical properties of nanocomposites before and after doping. The metal-oxygen bonding was affirmed from IR spectra and excitation characteristics were detailed from UV–visible absorption spectra. The SEM images along with Energy dispersive X-ray analysis deliberates hexagonal morphology for pure ZnO which was surprisingly reformed into poly hexagon structures after doping with silver ions. The pertinence of the target material for LED application was verified by performing photoluminescence and charge density measurements. The doping of silver ions into ZnO presents a novel avenue in the field of optronics and serves as appropriate phosphors for light-emitting diodes. The application of the title compound was established by providing nano coating to LED bulb and emission efficiencies was recorded before and after coating. The present research recommends a unique method of nanocoating of LED bulb for efficient light intensity.

    DOI: https://doi.org/10.1016/j.molstruc.2024.138310

    DOI: https://doi.org/10.1016/j.molstruc.2024.138310

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0022286024008305?via%3Dihub

  • Clarifying the Role of Carboxyl Functionality in Squaraine towards Aggregation and Self-assembly through Photophysical Characterization and BSA Interactions. 査読有り 国際誌

    Sai Kiran Mavileti, Tamaki Kato, Shyam S. Pandey

    Journal of Molecular Structure ( Elsevier )   1309   138226(1) - 138226(9)   2024年04月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The demand for near-infrared (NIR) probes with robust and stable fluorescence signals has surged, driven by their applications in optical sensing and bioimaging. Squraine dyes as NIR fluorescent probes have gained significant traction. However, understanding their behavior in aqueous media is important for their successful application. Herein we report the synthesis and photophysical characterization of carboxy-functionalized unsymmetrical squaraine dyes capable of light absorption and emission in the near-infrared (NIR) wavelength region. Structural variations in alkyl chain length, and spacer chain length between the primary chromophore and –COOH group were systematically introduced to investigate their impact on self-assembly in aqueous media leading to dye aggregation and their differential interactions with Bovine Serum Albumin (BSA) as a model protein. In phosphate buffer (PB) the absorption intensity decreased drastically along with pronounced shoulders due to dye aggregation leading to complete fluorescence quenching. However, in the presence of BSA, the intensity of shoulder bands reduced coupled with a sharp increase in the absorption associated with monomeric dye with the increasing concentration of BSA, indicating the prevention of dye aggregation owing to dye-BSA interactions. The prevention of dye aggregation due to dye-BSA interaction also led to a tremendous increase in the fluorescence intensities as a function of the increasing BSA concentrations. Site-selective study off BSA showed that these dyes bind preferably at Site-II using hydrophilic interactions. Thus, these dyes show great potential as FRET or fluorescent on/off probes for biosensing, non-covalent labeling of proteins, and fluorescent probes for bioimaging.

    DOI: https://doi.org/10.1016/j.molstruc.2024.138226

    DOI: https://doi.org/10.1016/j.molstruc.2024.138226

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0022286024007464?via%3Dihub

  • Targeted elimination of heavy metals from industrial wastewater: Synergistic effect of nano metal oxides 査読有り 国際誌

    Manoharan Swathika, Narasimhan Muthulakshmi Andal, Sivasubramaniam Dharani, Jay Singh, Shyam S. Pandey, Kshitij RB Singh, Arunadevi Natarajan

    Journal of the Taiwan Institute of Chemical Engineers ( Elsevier )   105485(1) - 105485(10)   2024年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Design and synthesis of pro-active nano metal oxides.


    Advanced and cost-effective process for water treatment.


    Comparative study probed the efficacies of target compound in heavy metal removal.


    Upscaling the lab result to field samples to batch (96 %) and column method (98 %).

    DOI: https://doi.org/10.1016/j.jtice.2024.105485

    DOI: https://doi.org/10.1016/j.jtice.2024.105485

    その他リンク: https://www.sciencedirect.com/science/article/pii/S1876107024001433?via%3Dihub

  • A Biocompatible NIR Squaraine Dye and Dye-Antibody Conjugates for Versatile Long-term In Vivo Fluorescence Bioimaging 査読有り 国際誌

    Priyanka Balyan, Galyna Bila, Sai Kiran Mavileti, Evgenia Bila, Nazar Negrych, Shekhar Gupta, Linjun Tang, Rostyslav Bilyy, Shyam S. Pandey, Tamaki Kato

    Materials Advances ( RSC )   5   3940 - 3949   2024年03月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The demand for dependable near-infrared (NIR) probes, capable of sustained fluorescence within living systems and facile conjugation with biomolecules like antibodies and proteins, has been significantly on the rise, attributed to the substantial rise in the use of NIR imaging techniques and devices, with extensive integration into clinical diagnostics. Antibody conjugates are vital for targeted and selective bioimaging, enabling precise visualization of specific biomolecules within complex biological systems. Their multiplexing capability allows simultaneous detection of multiple targets, while their dynamic imaging capability enables real-time monitoring of cellular processes. Clinically, antibody conjugates have significant applications in disease prognosis, diagnosis, and monitoring. In this work, we report the synthesis of a new symmetrical NIR squaraine dye (SQ-58) with multiple carboxy anchoring groups for ease of coupling with antibodies. The dye showed decreased absorption and fluorescence intensity in phosphate buffer (PB) due to enhanced dye-aggregate formation. However, in the presence of bovine serum albumin (BSA) in PB, SQ-58 showed an enhanced fluorescence signal along concentrations of BSA. SQ-58 showed no cytotoxicity when tested in white laboratory mice while providing strong fluorescence when injected in vivo. Conjugation of SQ-58 through the carboxylic groups to the isotypic mouse IgG antibodies (IgG-SQ-58) resulted in uniform distribution of the targeted molecule in the whole cardiovascular system. The NIR signal of IgG-SQ-58 was stable for at least 7 days allowing the possibility of long-term imaging. Conjugation of SQ-58 to antibodies raised against NK-Ly lymphoma tumor cells allowed efficient discrimination of tumor cells grown in the abdomen of laboratory mice. Thus, to the best of our knowledge, we report for the first time a biocompatible NIR dye, SQ-58, that can be easily conjugatable to biomolecules, and its antibody conjugates for a wide range of bioimaging applications.

    DOI: https://doi.org/10.1039/d4ma00212a

    DOI: https://doi.org/10.1039/d4ma00212a

    その他リンク: https://pubs.rsc.org/en/content/articlelanding/2024/ma/d4ma00212a

  • Design and Synthesis of Novel Squaraine-Based Fluorescent Probe for Far-Red Detection of Chymotrypsin Enzyme 査読有り 国際誌

    Shekhar Gupta, Priyanka, Sai Kiran Mavileti, Shyam S. Pandey, Tamaki Kato

    Molecules ( MDPI )   29 ( 6 )   1282(1) - 1282(14)   2024年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Chymotrypsin, a crucial enzyme in human digestion, catalyzes the breakdown of milk proteins, underscoring its significance in both health diagnostics and dairy quality assurance. Addressing the critical need for rapid, cost-effective detection methods, we introduce a groundbreaking approach utilizing far-red technology and HOMO-Förster resonance energy transfer (FRET). Our novel probe, SQ-122 PC, features a unique molecular design that includes a squaraine dye (SQ), a peptide linker, and SQ moieties synthesized through solid-phase peptide synthesis. Demonstrating a remarkable quenching efficiency of 93.75% in a tailored H2O:DMSO (7:3) solvent system, our probe exhibits absorption and emission properties within the far-red spectrum, with an unprecedented detection limit of 0.130 nM. Importantly, our method offers unparalleled selectivity towards chymotrypsin, ensuring robust and accurate enzyme detection. This pioneering work underscores the immense potential of far-red-based homo-FRET systems in enabling the sensitive and specific detection of chymotrypsin enzyme activity. By bridging the gap between cutting-edge technology and biomedical diagnostics, our findings herald a new era of enzyme sensing, promising transformative advancements in disease diagnosis and dairy quality control.

    DOI: https://doi.org/10.3390/molecules29061282

    DOI: https://doi.org/10.3390/molecules29061282

    その他リンク: https://www.mdpi.com/1420-3049/29/6/1282

  • The Influence of a Microstructural Conformation of Oriented Floating Films of Semiconducting Polymers on Organic Device Performance 査読有り 国際誌

    Shubham Sharma, Kumar Vivek Gaurav, Shuichi Nagamatsu, Shyam S. Pandey

    Polymers ( MDPI )   16 ( 5 )   710(1) - 710(13)   2024年03月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    first_pagesettingsOrder Article Reprints
    Open AccessArticle
    The Influence of a Microstructural Conformation of Oriented Floating Films of Semiconducting Polymers on Organic Device Performance
    by Shubham Sharma 1,*ORCID,Kumar Vivek Gaurav 1ORCID,Shuichi Nagamatsu 2 andShyam S. Pandey 1,*ORCID
    1
    Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu 808-0196, Japan
    2
    Department of Computer Science and Electronics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka 820-8502, Japan
    *
    Authors to whom correspondence should be addressed.
    Polymers 2024, 16(5), 710; https://doi.org/10.3390/polym16050710
    Submission received: 24 January 2024 / Revised: 27 February 2024 / Accepted: 4 March 2024 / Published: 5 March 2024
    (This article belongs to the Special Issue New Progress in Semiconducting Polymer Nanoparticles)
    Downloadkeyboard_arrow_down Browse Figures Versions Notes
    Abstract
    Extended π-conjugation with backbone-planarity-driven π-π stacking dominates charge transport in semiconducting polymers (SCPs). The roles of SCP film morphology and macromolecular conformation concerning the substrate in influencing charge transport and its impact on device performance have been a subject of extensive debate. Face-on SCPs promote out-of-plane charge transport primarily through π-π stacking, with conjugated polymeric chains assisting transport in connecting crystalline domains, whereas edge-on SCPs promote in-plane charge transport primarily through conjugation and π-π stacking. In this work, we fabricated three different types of devices, namely, organic field effect transistors, organic Schottky diodes, and organic bistable memristors, as representatives of planar and vertical devices. We demonstrate that a planar device, i.e., an organic field effect transistor, performs well in an edge-on conformation exhibiting a field-effect mobility of 0.12 cm2V−1s−1 and on/off ratio >104, whereas vertical devices, i.e., organic Schottky diodes and organic memristors, perform well in a face-on conformation, exhibiting exceptionally high on/off ratios of ~107 and 106, respectively.

    DOI: https://doi.org/10.3390/polym16050710

    DOI: https://doi.org/10.3390/polym16050710

    Kyutacar

    その他リンク: https://www.mdpi.com/2073-4360/16/5/710

  • Aloe Vera Gel (Aloe barbadensis Miller) Derived Self-Assembled Flower-Shaped Carbon Quantum Dots Interface for Ultra-Sensitive Electrochemical Detection of the Endocrine Disruptor Bisphenol-A 査読有り 国際誌

    Ankur Srivastava, Kshitij R, B. Singh, Khrsheed Khrsheed Ahmed, Ravindra Pratap Singh, Mrituanjay D. Pandey, Shyam S. Pandey, Jay Singh

    New Journal of Chemistry ( RSC )   48   5543 - 5552   2024年02月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    This manuscript is focused on the synthesis of biologically derived carbon quantum dots (CQDs) via hydrothermal methods using Aloevera leaves (Aloe barbadensis miller). The proposed biochemical route, utilizing Aloevera gel, has garnered attention due to its cost-effectiveness, eco-friendly nature, and ability to produce highly pure, stable, and fluorescent biologically derived self-assembled nanoparticles measuring approximately 5–6 nm in size. The primary objective was to harness plant sources and establish a sustainable and renewable platform for synthesizing valuable nanostructures, encouraging researchers to shift their focus from unhealthy chemicals to natural resources for healthier and non-polluting investigations. The synthesized CQDs exhibited remarkable colloidal properties, excellent fluorescence, and photostability under UV light. Characterization techniques such as powder XRD, UV-Vis spectroscopy, photoluminescence, FT-IR, AFM, and TEM were employed to analyse the prepared CQDs. Furthermore, the prepared CQDs displayed significant electrochemical behaviour in the presence of tyrosinase enzyme to detect Bisphenol-A, which functions as an endocrine disruptor (ED). These nanomaterials were also utilized for electrochemical biosensing applications. Additionally, the fabricated CQDs exhibited unique structural and morphological characteristics, along with efficient electrochemical properties, which are thoroughly discussed in the manuscript.

    DOI: https://doi.org/10.1039/D4NJ00061G

    DOI: https://doi.org/10.1039/D4NJ00061G

    その他リンク: https://pubs.rsc.org/en/content/articlelanding/2024/nj/d4nj00061g

  • Hetero atom-based metal complexes as emitters in organic light-emitting diodes 査読有り 国際誌

    https://www.sciencedirect.com/science/article/pii/S002228602400187X?via%3Dihub

    Journal of Molecular Structure ( Elsevier )   1304   137664(1) - 137664(13)   2024年01月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The new, more energy-efficient lighting systems and high-quality displays for new age digital devices is the demand of the current generation. In this regard, focused and deliberated research has been done on transition metal complexes as effective building blocks for organic light-emitting diodes (OLEDs). The activity of divalent metallic compounds was investigated through spotlighting Co (II), Ni (II), and Cu (II) metal ions with guanidinium naphthoate as blue phosphors in OLEDs. Using spectroscopic and diffraction techniques, the phosphors produced at the optimal temperature were studied both structurally and thermally. Additionally, the target compound's photophysical investigations in a variety of organic solvents with differing polarities were examined, and the findings were presented. Because of their quick photoluminescence response time and high emission quantum efficiency, Ni (II) complexes have drawn specific attention. Ni (II) complexes precisely exhibit thermally activated delayed fluorescence (TADF) and found to be the most promising materials for future lighting technology. We compared the efficiencies of various complexes in this study to provide an overview of the development of OLEDs. To affirm the pertinency of the synthesized compounds as phosphors, studies like photoluminescence, correlated color temperature, color purity, Duv, and the Television Lighting Consistency Index (TLCI) were performed and their photometric properties were also deliberated. Ni (II) shows an magnificent luminescence character and maximum coloring index for light sources and found to be an essential component for OLEDs.

    DOI: https://doi.org/10.1016/j.molstruc.2024.137664

    DOI: https://doi.org/10.1016/j.molstruc.2024.137664

  • Controlling adsorption of two dyes on TiO2 surface to improve the efficiency of see-through dye-sensitized solar cells 査読有り 国際誌

    https://www.sciencedirect.com/science/article/pii/S0038092X24000331

    Solar Energy ( Elsevier )   269   112339(1) - 112339(11)   2024年01月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Transparent dye-sensitized solar cells (DSSCs) were fabricated utilizing judiciously selected blue-absorbing (D-131) and red-absorbing (SQ-140) two sensitizing dyes. These dyes exhibit complementary light absorption along with the least optical absorption in the 500 nm-600 nm wavelength region. This is helpful to impart not only high average visible transparency (AVT) but also high photoconversion efficiency (PCE). D-131 exhibits not only an approximately 1.5 times higher adsorption speed but also an approximately 4 times stronger binding on the TiO2. Stepwise dye adsorption on TiO2 was conducted to suppress unwanted and non-favourable inter-dye interactions. It has been demonstrated that when the SQ-140 adsorbed substrate was subjected to further dye adsorption by the D-131, there was a replacement of the SQ-140 by the D-131 reaching the optimal presence of both of the dyes in 20–30 min giving the best PCE of 4.5 %. However, in the opposite sequence of dye adsorption, there was no replacement of D-131 by SQ-140, rather SQ-140 was adsorbed in the available surface on the mesoporous TiO2 adsorbed with D-131. In this 2nd case, the optimal presence of both dyes is attained in 40 min of adsorption by SQ-140 giving the best PCE of 5.45 %. Transparent DSSCs fabricated using stepwise co-sensitized photoanodes demonstrated an AVT of 47.5 % and 26.5 % with thinner (single-layer) and thicker (double-layer) mesoporous TiO2, respectively.

    DOI: https://doi.org/10.1016/j.solener.2024.112339

    DOI: https://doi.org/10.1016/j.solener.2024.112339

    Kyutacar

  • Fabrication of All-Polymer Organic Phototransistors Utilizing Oriented P3HT 査読有り

    Tejswini K. Lahane, Shubham Sharma, Harshita Rai, Moulika Desu, Yoshito Ando, Shyam S. Pandey, and Vipul Singh

    IEEE Sensor Letters ( IEEE )   8 ( 2 )   3500304(1) - 3500304(4))   2023年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    High flexibility and solution processability have made all polymer organic pho-totransistors (AP-OPTs) a suitable candidate for various wearable and smart home applications. However, fabrication of the AP-OPTs via the solution process is still challenging owing to the possible degradation of the polymer gate dielectric layer by the solvent of the organic semiconductor, resulting in hampered device performance. To circumvent this issue, the unidirectional floating film transfer method, having the least impact on the underlying organic dielectric film, has been used to obtain highly oriented poly (3-hexylthiophene) (P3HT) thin film. Further, the effect of P3HT film orientation with respect to the channel has been investigated. Results revealed that the device with parallel orientation performed better with photosensitivity of 5 × 10 3 and photoresponsivity of 133 A/W.

    DOI: 10.1109/LSENS.2023.3347760

    DOI: 10.1109/LSENS.2023.3347760

    Kyutacar

    その他リンク: https://ieeexplore.ieee.org/document/10376029

  • Enhancement in Capacitance of Ionic Type of EAP-Based Strain Sensors 査読有り 国際誌

    Nitin KUMAR Singh, Kazuto Takashima, Shyam S Pandey

    Sensors ( MDPI )   23 ( 23 )   9400(1) - 9400(19)   2023年11月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    This paper aims to enhance the capacitance of electroactive polymer (EAP)-based strain sensors. The enhancement in capacitance was achieved by using a free-standing stretchable polymer film while introducing conducting polymer to fabricate a hybrid dielectric film with controlled conductivity. In this work, styrene-ethylene-butylene-styrene (SEBS) rubber was used as the base material, and dodecyl benzene sulfonate anion (DBSA)-doped polyaniline (PANI) was used as filler to fabricate a hybrid composite conducting film. The maleic anhydride group of the SEBS Rubber and DBSA, the anion of the polyaniline dopant, make a very stable dispersion in Toluene and form a free-standing stretchable film by solution casting. DBSA-doped polyaniline increased the conductivity and dielectric constant of the dielectric film, resulting in a significant enhancement in the capacitance of the EAP-based strain sensor. The sensor presented in this article exhibits capacitance values ranging from 24.7 to 100 µF for strain levels ranging from 0 to 100%, and sensitivity was measured 3 at 100% strain level.

    DOI: https://doi.org/10.3390/s23239400

    DOI: https://doi.org/10.3390/s23239400

    その他リンク: https://www.mdpi.com/1424-8220/23/23/9400

  • Squaric Acid Core Substituted Unsymmetrical Squaraine Dyes for Dye-Sensitized Solar Cells: Effect of Electron Acceptors on Their Photovoltaic Performance 査読有り 国際誌

    Safalmani Pradhan, Yuki Kurokawa, Suraya Shaban, Shyam S Pandey

    Colorants ( MDPI )   2 ( 4 )   654 - 673   2023年11月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The design and development of sensitizing dyes possessing wide-wavelength photon harvesting encompassing visible to near-infrared (NIR) wavelength regions are unavoidable for increasing the overall efficiency of dye-sensitized solar cells (DSSCs). In this study, three far-red-sensitive squaraine sensitizers were designed computationally, synthesized, and characterized, aiming towards their suitability as a potential sensitizer for DSSCs. It has been found that the incorporation of an electron acceptor moiety in the central squaraine core brought about a red shift in the absorption maximum (λmax) and the emergence of a secondary absorption band in the blue region, thus broadening the photon-harvesting window. In addition, it also lowered the dye’s HOMO energy level enabling a facile regeneration of the photo-excited dye, which improved the photovoltaic performance of SQ-223, exhibiting a photoconversion efficiency (PCE) of 4.67%. Thereafter, to address the issue of wide-wavelength photon harvesting, DSSCs were fabricated by co-adsorbing two complementary dyes SQ-223 and D-131 in various molar ratios. The DSSC fabricated with D-131 and SQ-223 in 9:1 molar ratio displayed the best photovoltaic performance with a PCE of 5.81%, a significantly higher PCE when compared to corresponding individual dye-based DSSCs containing D-131 (3.94%) and SQ-223 (4.67%).

    DOI: https://doi.org/10.3390/colorants2040034

    DOI: https://doi.org/10.3390/colorants2040034

    Kyutacar

    その他リンク: https://www.mdpi.com/2079-6447/2/4/34

  • Deposition of Transparent Ag Nanowires‐Based Top Electrode for the Development of Double‐Side Green Light Hybrid Photodetector 査読有り 国際誌

    Tejswini K. Lahane, Jitesh Agrawal, Yoshito Ando, Shyam S. Pandey, Vipul Singh

    Physica Status Solidi-A ( Wiley )   220 ( 24 )   2300166 (1) - 2300166 (8)   2023年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Herein, various silver nanowires (AgNWs) deposition techniques, i.e., spin coating, Mayer rod coating, and spray coating are used to fabricate ZnO/P3HT-based double-side hybrid photodetectors and their photoresponse for 520 nm green light has been compared. The electrodes are coated over the polyethylene terephthalate sheet separately and laminated over the indium tin oxide (ITO)/ZnO/P3HT. Mayer rod-coated electrodes are found to have a sheet resistance (Rsh) of 24 Ω Sq.−1 and a light transmission of 91%. Additionally, spin- and spray-coated AgNW electrodes exhibit Rsh of 20 and 23 Ω Sq.−1, respectively, along with 80% and 85% transparencies. As the device consists of transparent electrodes on both sides, it can detect light from both the top and bottom sides. Mayer rod-coated AgNW electrode-based device has produced better photosensitivity of 1500 (for ITO side illumination) and 630 (for AgNWs side illumination) at λ = 525 nm. Further, the device has demonstrated the responsivity of 124 mAW−1 and specific detectivity of 3 × 1011 Jones.

    DOI: https://doi.org/10.1002/pssa.202300166

    DOI: https://doi.org/10.1002/pssa.202300166

    Kyutacar

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300166

  • Bioinspired Multifunctional Silver Nanoparticles for Optical Sensing Applications: A Sustainable Approach 招待有り 査読有り 国際誌

    Kshitij RB Singh, Arunadevi Natarajan, Shyam S. Pandey

    https://doi.org/10.1021/acsabm.3c00669 ( American Chemical Society )   6 ( 11 )   4549 - 4571   2023年10月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Silver nanoparticles developed via biosynthesis are the most fascinating nanosized particles and encompassed with excellent physicochemical properties. The bioinspired nanoparticles with different shapes and sizes have attracted huge attention due to their stability, low cost, environmental friendliness, and use of less hazardous chemicals. This is an ideal method for synthesizing a range of nanosized metal particles from plants and biomolecules. Optical biosensors are progressively being fabricated for the attainment of sustainability by using opportunities offered by nanotechnology. This review focuses mainly on tuning the optical properties of the metal nanoparticles for optical sensing to explore the importance and applications of bioinspired silver nanoparticles. Further, this review deliberates the role of bioinspired silver nanoparticles (Ag NPs) in biomedical, agricultural, environmental, and energy applications. Profound insight into the antimicrobial properties of these nanoparticles is also appreciated. Tailor-made bioinspired nanoparticles with effectuating characteristics can unsurprisingly target tumor cells and distribute enwrapped payloads intensively. Existing challenges and prospects of bioinspired Ag NPs are also summarized. This review is expected to deliver perceptions about the progress of the next generation of bioinspired Ag NPs and their outstanding performances in various fields by promoting sustainable practices for fabricating optical sensing devices.

    DOI: https://doi.org/10.1021/acsabm.3c00669

    DOI: https://doi.org/10.1021/acsabm.3c00669

    その他リンク: https://pubs.acs.org/doi/10.1021/acsabm.3c00669

  • Regulation of neuroinflammation in Alzheimer's disease via nanoparticle-loaded phytocompounds with anti-inflammatory and autophagy-inducing properties 査読有り 国際誌

    Vinayak Nayak Sushmita Patra Shrushti Rou Atala Bihari Jena Rohit Sharma Kali Prasad Pattanaik Jay Singh Shyam S. Pandey Ravindra Pratap Singh Sanatan Majhi Kshitij RB Singh Rout George Kerry

    Phytomedicine ( Elsevier )   122   155150 (1) - 155150 (22)   2023年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Alzheimer's disease (AD) is characterized by neuroinflammation linked to amyloid β (Aβ) aggregation and phosphorylated tau (τ) protein in neurofibrillary tangles (NFTs). Key elements in Aβ production and NFT assembly, like γ-secretase and p38 mitogen-activated protein kinase (p38MAPK), contribute to neuroinflammation. In addition, impaired proteosomal and autophagic pathways increase Aβ and τ aggregation, leading to neuronal damage. Conventional neuroinflammation drugs have limitations due to unidirectional therapeutic approaches and challenges in crossing the Blood-Brain Barrier (BBB). Clinical trials for non-steroidal anti-inflammatory drugs (NSAIDs) and other therapeutics remain uncertain. Novel strategies addressing the complex pathogenesis and BBB translocation are needed to effectively tackle AD-related neuroinflammation.

    DOI: https://doi.org/10.1016/j.phymed.2023.155150

    DOI: https://doi.org/10.1016/j.phymed.2023.155150

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0944711323005093?via%3Dihub

  • Chitosan stabilized copper iodide nanoparticles enabled nano-bio-engineered platform for efficient electrochemical biosensing of dopamine 査読有り 国際誌

    Kshitij RB Singh, Pooja Singh, Sadhucharan Mallick, Jay Singh, Shyam S. Pandey

    International Journal of Biological Macromolecules ( Elsevier )   253 ( 8 )   127587(1) - 127587(12)   2023年09月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Neurodegenerative disorders are one of the significant challenges to the aging society, as per the United Nations, where 1 in 6 people globally over 65 years of age are expected to suffer by 2050. The exact pathophysiological root of these disorders is although not known adequately, but reduced dopamine (most significant neurotransmitters) levels have been reported in people affected by Parkinson's disease. Sensitive detection and effective monitoring of dopamine can help to diagnose these neurodegenerative disorders at a very early stage, which will help to properly treat these disorders and slow down their progression. Therefore, it is crucial to detect physiological and clinically acceptable amounts of dopamine with high sensitivity and selectivity in basic pathophysiology research, medication, and illness diagnosis. Here in this present investigation, nano-bio-engineered stable chitosan stabilized copper iodide nanoparticles (CS@CuI NPs) were synthesized to engineer the active biosensing platform for developing dopamine biosensors. Initially, the as-synthesized nano-bio-engineered CS@CuI NPs were subjected to its drop-casting onto an Indium tin oxide (ITO) conducting glass substrate. This substrate platform was then utilized to immobilize tyrosinase (Tyr) enzyme by drop-casting to fabricate Tyr/CS@CuI NPs/ITO bioelectrode for the ultrasensitive determination of dopamine. Several techniques were used to characterize the structural, optical, and morphological properties of the synthesized CS@CuI NPs and Tyr/CS@CuI NPs/ITO bioelectrode. Further, the as-prepared bioelectrode was evaluated for its suitability and electrocatalytic behaviour towards dopamine by cyclic voltammetry. A perusal of the electroanalytic results of the fabricated biosensor revealed that under the optimized experimental conditions, Tyr/CS@CuI NPs/ITO bioelectrode exhibits a very high electrochemical sensitivity of 11.64 μA μM−1 cm−2 towards dopamine with the low limit of detection and quantification of 0.02 and 0.386 μM, respectively. In addition, the fabricated bioelectrode was stable up to 46 days with only 4.82 % current loss, reusable till 20 scans, and it also performed effectively while real sample analysis. Therefore, the nano-bio-engineered biosensor platform being reported can determine deficient dopamine levels in a very selective and sensitive manner, which can help adequately manage neurodegenerative disorders, further slowing down the disease progression.

    DOI: https://doi.org/10.1016/j.ijbiomac.2023.127587

    DOI: https://doi.org/10.1016/j.ijbiomac.2023.127587

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0141813023044859?via%3Dihub

  • Symbiotic study of N-bridged metal complexes as electrocatalysts for hydrogen evolution reaction 査読有り 国際誌

    Arunadevi Natarajan, M. Swathika, Kshitij RB Singh, Ranjana Verma, Shyam S. Pandey, Jay Singh

    International Journal of Hydrogen Energy ( Elsevier )   52 ( A )   1458 - 1471   2023年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Design and fabrication of non-noble metal catalysts for the extensive generation of H2 (hydrogen) gas by water splitting is the upsurging field aiming towards the sustainable environment and need the future clean and green energy. However, scheming and understanding the basic principle regulating the activity of the catalyst is still inexplicable. Although Pt is currently the material of choice owing to its high electrocatalytic activities but need for its high loading and high cost is an intriguing issue needing amicable solution. The hybrid structures of heteroatom-based transition metal complexes are more effective and are cost effective electrocatalysts for hydrogen production. In this proposed work, the electrocatalytic behaviour of alkali (Li+, Na+, K+) and alkaline metal (Ca2+, Sr2+, Ba2+) was figured out along with their synthetic procedure and characterization. Owing to their high complexing ability, ring formation, and bidentate nature, substituted naphthoic acid and aminoguanidine were chosen as bridging ligands. The thermodynamic stability and best catalytic behaviour of synthesized alkali and alkaline earth metals were compared and presented based on electrochemical studies. Linear sweep voltammetry (LSV) curves display excellent activity and Tafel slope was found in the range of 6.38–40 mVdec−1 in 0.5 M H2SO4. The electrochemical impedance spectroscopy (EIS) test was accomplished to recognize the mechanism of HER, and charge transfer resistance was less which indicates that composites are favourable for the hydrogen evolution. The electrochemical surface area (ECSA) was figured by studying the electric double layer capacitance (C dl) and it was found to be 0.377 μFcm2 - 0.143 μFcm2. More prominent ECSA values implies, the target complexes have enhanced electrochemically active/dynamic sites and better hydrogen evolution performance. According to the results, high-performing catalytically active sites are found to be Li [1NA-AMG] metal ions, thus showing a potential method for electrocatalyst engineering. Furthermore, in a volcano plot, the position of the Li [1NA-AMG] metal ions is found to be close to the apex with near thermoneutral catalytic activity. Based on the results, we successfully designed an electrocatalyst as a prospective candidate for hydrogen evolution reaction.

    DOI: https://doi.org/10.1016/j.ijhydene.2023.07.305

    DOI: https://doi.org/10.1016/j.ijhydene.2023.07.305

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0360319923038582?via%3Dihub

  • Fabrication and Characterization of Bifacial Dye-Sensitized Solar Cells Utilizing Indoline Dye with Iodine and Cobalt-based Redox Electrolytes 査読有り 国際誌

    Suraya Shaban, Safalmani Pradhan, Shyam S. Pandey

    Physica Status Solidi-A ( Elsevier )   220 ( 24 )   2300241 (1) - 2300241 (7)   2023年08月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Bifacial solar cells are gaining popularity due to their compactness, space-saving property, and higher photoconversion efficiency (PCE) than mono-facial solar cells. Bifacial dye-sensitized solar cells (BF-DSSCs) are fabricated and characterized utilizing D-205 as a dye sensitizer in combination with I−/I3− and Co2+/Co3+ redox electrolytes. BF-DSSCs using iodine-based electrolytes demonstrate a cumulative PCE and bifaciality factor (BFF) of 13.05% and 85%, respectively. The hampered PCE under backside light illumination is attributed to the absorption of photons by the electrolyte itself. Contrary to this, BF-DSSCs fabricated using cobalt-complex-based redox electrolyte exhibits an exceptionally high BFF of nearly 100% with a PCE of 4.77% and 4.75% under the front- and rear-light illumination, respectively. Although the open-circuit voltage of the BF-DSSCs fabricated using cobalt electrolyte (with deeper redox potential) is slightly higher than that of BF-DSSCs fabricated using iodine electrolyte, their cumulative PCE (9.52%) is much lower than that of iodine-based device counterparts (13.05%). This decrease in PCE is attributed to the relatively fast charge recombination in the cobalt-electrolyte-based BF-DSSCs.

    DOI: https://doi.org/10.1002/pssa.202300241

    DOI: https://doi.org/10.1002/pssa.202300241

    Kyutacar

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300241

  • The role of solvents in the microstructure and charge transport of semiconducting polymer films prepared at the air–liquid interface 査読有り 国際誌

    Manish Pandey, Jumpei Toyoda, Shubham Sharma, Yongyoon Cho, Hiroaki Benten, Shyam S Pandey, Masakazu Nakamura

    Journal of Materials Chemistry C ( RSC )   11   12364 - 12373   2023年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Charge transport in semiconducting polymers (SCPs) is strongly influenced by their film microstructure. Fabrication of SCP floating films at the air–liquid interface offers numerous advantages over conventional solution processing. The casting solvent plays a crucial role in forming film microstructures, which has been extensively studied for various fabrication methods. However, floating films of SCPs are generally processed with a single solvent, and the role of their boiling point (Tb) or solubility of individual solvents (or blends) has never been considered. In this report, we have systematically studied the effect of different solvents and blends on the film microstructure and field-effect transistor (FET) mobility of three well-known SCPs, PQT, PBTTT and P(NDI2OD-T2). We used the unidirectional floating film transfer method (UFTM) and interfacial spreading to fabricate large-area oriented and isotropic films, respectively. The detailed analysis of the film microstructure, macroscopic orientation and FET mobility of the films of these SCPs processed with different solvents has been studied. Our results clarify that a low Tb solvent (<90 °C) is a prerequisite for obtaining uniform large-area oriented films, and films processed with high Tb solvents are isotropic. As expected, the effect of Tb of the solvent on the orientation of SCPs and FET mobility is different for various SCPs under consideration. Instead, the variation of FET mobility is linked to the optical dichroic ratio (polymer orientation), interchain ordering in films and the presence of fiber-like aggregates.

    DOI: https://doi.org/10.1039/D3TC02282J

    DOI: https://doi.org/10.1039/D3TC02282J

    その他リンク: https://pubs.rsc.org/en/content/articlelanding/2023/tc/d3tc02282j/unauth

  • Design, Synthesis and Photophysical Characterization of Multifunctional Far-red Squaraine Dyes for Dye-Sensitized Solar Cells 査読有り 国際誌

    Kota Mori, Yuki Kurokawa, Sai Kiran Mavileti, Shyam S Pandey

    Physica Status Solidi-A ( Wiley )   220 ( 24 )   2023年08月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Novel far-red sensitive symmetrical squaraine (SQ) dyes aiming toward multifunctional properties such as control of dye aggregation, promotion of molecular self-assembly, and introduction of electrolyte function by alkyl chain terminal modification are designed. Newly designed dyes without terminal modification as reference (SQ-5) along with iodine (SQ-77) and imidazole (SQ-79) alkyl terminal-modified dyes are successfully synthesized, characterized, and subjected to detailed photophysical investigations. Iodine terminal modification (SQ-77) leads to enhanced molar extinction coefficient, dye aggregation, dye loading, and binding strength on the TiO2 surface, which is found by just the opposite after the imidazole (SQ-79) terminal modification. Demonstration of nearly similar photovoltaic performance by SQ-77 and SQ-79 in the absence of iodine and chenodeoxycholic acid validates their multifunctional role as electrolyte function and dye aggregation prevention, respectively, in addition to their main role as photosensitizer. Dye-sensitized solar cells fabricated with SQ-5 as a sensitizer show efficient far-red to near-infrared photo sensitization and photon harvesting with short-circuit photocurrent density, open-circuit voltage, and fill factor of 11.98 mA cm−2, 0.61 V, and 0.57, respectively, leading to a photoconversion efficiency of 4.2% under simulated solar irradiation.

    DOI: https://doi.org/10.1002/pssa.202300254

    DOI: https://doi.org/10.1002/pssa.202300254

    Kyutacar

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300254

  • Enhancing the Performance of Organic Phototransistors Based on Oriented Floating Films of P3HT Assisted by Al-Island Deposition 査読有り 国際誌

    Tejswini K. Lahane, Shubham Sharma, Moulika Desu, Yoshito Ando, Shyam S. Pandey, Vipul Singh

    Materials ( MDPI )   16   5249(1) - 5249(12)   2023年07月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The fabrication of high-performance Organic Phototransistors (OPTs) by depositing Al-islands atop Poly(3-hexylthiophene) (P3HT) thin film coated using the unidirectional floating-film transfer method (UFTM) has been realized. Further, the effect of Al-island thickness on the OPTs’ performance has been intensively investigated using X-ray photoelectron spectroscopy, X-ray Diffraction, Atomic force microscopy and UV-Vis spectroscopy analysis. Under the optimized conditions, OPTs’ mobility and on–off ratio were found to be 2 × 10−2 cm2 V−1 s−1 and 3 × 104, respectively. Further, the device exhibited high photosensitivity of 105, responsivity of 339 A/W, detectivity of 3 × 1014 Jones, and external quantum efficiency of 7.8 × 103% when illuminated with a 525 nm LED laser (0.3 mW/cm2).

    DOI: https://doi.org/10.3390/ma16155249

    DOI: https://doi.org/10.3390/ma16155249

    Kyutacar

    その他リンク: https://www.mdpi.com/1996-1944/16/15/5249

  • Advancement in precision diagnosis and therapeutic for triple-negative breast cancer: Harnessing diagnostic potential of CRISPR-cas & engineered CAR T-cells mediated therapeutics 査読有り 国際誌

    Vinayak Nayak, Sushmita Patra, Kshitij RB Singh, Bristy Ganguly, Das Nishant Kumar, Deepak Panda, Ganesh Kumar Maurya, Jay Singh, Sanatan Majhi, Rohit Sharma, Shyam S. Pandey, Ravindra Pratap Singh, Rout George Kerry

    Environmental Research ( Elsevier )   235   116573(1) - 116573(31)   2023年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Cancer is characterized by uncontrolled cell growth, disrupted regulatory pathways, and the accumulation of genetic mutations. These mutations across different types of cancer lead to disruptions in signaling pathways and alterations in protein expression related to cellular growth and proliferation. This review highlights the AKT signaling cascade and the retinoblastoma protein (pRb) regulating cascade as promising for novel nanotheranostic interventions. Through synergizing state-of-the-art gene editing tools like the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-Cas system with nanomaterials and targeting AKT, there is potential to enhance cancer diagnostics significantly. Furthermore, the integration of modified CAR-T cells into multifunctional nanodelivery systems offers a promising approach for targeted cancer inhibition, including the eradication of cancer stem cells (CSCs). Within the context of highly aggressive and metastatic Triple-negative Breast Cancer (TNBC), this review specifically focuses on devising innovative nanotheranostics. For both pre-clinical and post-clinical TNBC detection, the utilization of the CRISPR-Cas system, guided by RNA (gRNA) and coupled with a fluorescent reporter specifically designed to detect TNBC's mutated sequence, could be promising. Additionally, a cutting-edge approach involving the engineering of TNBC-specific iCAR and syn-Notch CAR T-cells, combined with the co-delivery of a hybrid polymeric nano-liposome encapsulating a conditionally replicative adenoviral vector (CRAdV) against CSCs, could present an intriguing intervention strategy. This review thus paves the way for exciting advancements in the field of nanotheranostics for the treatment of TNBC and beyond.

    DOI: https://doi.org/10.1016/j.envres.2023.116573

    DOI: https://doi.org/10.1016/j.envres.2023.116573

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0013935123013774?via%3Dihub

  • Facile Fabrication and Characterization of Oriented and Multilayer Thin Films of Solution Processable Conjugated Polymer 査読有り 国際誌

    Shubham Sharma, Shuichi Nagamatsu, Vipul Singh, Shyam S. Pandey

    Physica Status Solidi-A ( Elsevier )   220 ( 24 )   2300194 (1) - 2300194 (7)   2023年07月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Fabrication of multilayer thin films of solution-processable organic semiconductors has great potential in organic electronics, but adopting existing thin-film techniques to attain this is highly cumbersome. Herein, a unique unidirectional floating film transfer method has been utilized, which allows the facile fabrication of large area and oriented thin films of conjugated polymers. This method has successfully fabricated and characterized multilayer and oriented thin films of regioregular poly(3-hexylthiophene) without having any adverse effect on the underlying layers. Optical characterizations reveal that fabricated thin films are anisotropic with a dichroic ratio of 2.2 having a single layer thickness of 14.5 nm. X-ray diffraction results demonstrate uniformity in the crystallinity of the multilayered thin film with comparable crystallite size and interplanar spacing with purely edge-on molecular orientation. The organic field effect transistor fabricates using multilayer thin films and also exhibits a uniform and saturated charge carrier mobility of about 0.1 cm2  V−1 s−1.

    DOI: https://doi.org/10.1002/pssa.202300194

    DOI: https://doi.org/10.1002/pssa.202300194

    Kyutacar

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300194

  • Gold nanoparticle assisted colorimetric biosensors for rapid polyethylene terephthalate (PET) sensing for sustainable environment to monitor microplastics 査読有り 国際誌

    Abhishek Behera, Soumya Ranjan Mahapatra, Sanatan Majhi, Namrata Misra, Rohit Sharma, Jay Singh, Ravindra Pratap Singh, Shyam S. Pandey, Kshitij RB Singh, Rout George Kerry

    Environmental Research ( Elsevier )   234   116556(1) - 116556(10)   2023年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    The extremely widespread and ubiquitous nature of plastics, estimated to boost its global production by 26 billion tons till 2050. The large chunks of plastic waste that decomposed down to micro- or nano plastics (MNPs) leads to various ill effects on biological entities. The conventional PET detection methods lack rapid detection of microplastics due to variances in microplastic features, long-drawn-out sample pre-processing procedures and complex instrumentation. Therefore, an instantaneous colorimetric evaluation of microplastic will ensures the simplicity of conducting assays on field. Several nanoparticle-based biosensors that detects proteins, nucleic acids, metabolites operate on either cluster or disperse state of nanoparticle. However, gold nanoparticle (AuNPs) emerges an ideal scaffold for sensory element in lateral flow biosensors due to their simple surface functionalization, unique optoelectronic properties and varied colour spectrum depending on morphologies and aggregation state. In this paper an effort has been made in the form of a hypothesis using in silico tools as a basis to detect polyethylene terephthalate (PET) – most abundant type of microplastic using gold nanoparticle based lateral flow biosensor. We retrieved sequences of PET-binding synthetic peptides and modelled their 3-D structure using I-Tasser server. The best protein model for each peptide sequences are docked with PET monomers – BHET, MHET and other PET polymeric ligands, to evaluate their binding affinities. The synthetic peptide SP 1 (WPAWKTHPILRM) docked with BHET and (MHET)4 exhibits 1.5-fold increases in binding affinity as compared to reference PET anchor peptide Dermaseptin SI (DSI). The GROMACS molecular dynamics simulation studies of synthetic peptide SP 1 - BHET & - (MHET)4 complexes for 50 ns further confirmed the stable binding. RMSF, RMSD, hydrogen bonds, Rg and SASA analysis provides useful structural insights of the SP 1 complexes as compared to reference DSI. Furthermore, SP 1 functionalized AuNP-based colorimetric device was described in detail for detection of PET.

    DOI: https://doi.org/10.1016/j.envres.2023.116556

    DOI: https://doi.org/10.1016/j.envres.2023.116556

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0013935123013609?via%3Dihub

  • Controlling the TiO 2 –Dye Nanomolecular Interactions for Improving the Photoconversion in Transparent Dye‐Sensitized Solar Cells 査読有り 国際誌

    Pritha Roy, Yuki Kurokawa, Shyam S. Pandey

    Physica Status Solidi-A ( Wiley )   220 ( 4 )   2300158 (1) - 2300158 (8)   2023年06月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Herein, transparent dye-sensitized solar cells (DSSCs) are fabricated using two sensitizing dyes aiming toward panchromatic photon harvesting following two different approaches of dye adsorption such as using dye cocktail and sequential dye adsorption. A combination of complementary yellow-colored dye (D-131) and green-colored far-red-sensitive squaraine dye (SQ-140) is judiciously selected not only for panchromatic light absorption but also for bypassing the absorption in the high eye-sensitivity wavelength region (500–600 nm) region to improve the transparency. The DSSC fabricated using a dye cocktail of D-131 and SQ-140 in a 9:1 molar ratio exhibits a photoconversion efficiency (PCE) and average visible transparency (AVT) of 3.89% and 36.9%, respectively. In contrast, stepwise and controlled dye adsorption of SQ-140 followed by D-131 on mesoporous TiO2 leads to further improvement in the PCE from 3.89% to 4.50%, while AVT is reduced from 36.9% to 15.6%. This marked improvement in the PCE for the stepwise co-sensitized transparent DSSCs is attributed to the suppression of unfavorable inter-dye interaction leading to synergistic photon harvesting by both of the constituent sensitizing dyes.

    DOI: https://doi.org/10.1002/pssa.202300158

    DOI: https://doi.org/10.1002/pssa.202300158

    Kyutacar

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300158

  • Vertical Distribution of Molecular Orientation and Its Implication on Charge Transport in Floating Films of Conjugated Polymers 査読有り 国際誌

    Harshita Rai, Kumar Vivek Gaurav, Safalmani Pradhan, Moulika Desu, Shubham Sharma, Shuichi Nagamatsu, Shyam S. Pandey

    Physica Status Solidi-A ( Wiley )   220 ( 24 )   2300236 (1) - 2300236 (7)   2023年06月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Fabrication of uniform and oriented thin films of conjugated polymers (CPs) with controlled thickness is essential for the implementation of organic devices. Over the years, unidirectional floating film transfer method (UFTM) has emerged as a facile technique for the fabrication of oriented thin films but its distribution of orientation in vertical (thickness) direction has not been explored yet. To investigate this, thin films of nonregioregular poly(3-hexylthiophene) are fabricated using UFTM with different concentrations of CPs to obtain thickness variation from 11 to 47 nm. Thin films of 4% and 9% polymer solution have similar dichroic ratio of 5.5 but have an appreciable difference in film thickness of 12 and 47 nm where thicker films are disordered as probed by polarized absorption spectra. Organic field-effect transistors fabricated using thinner films (12 nm) exhibit a saturated charge carrier mobility of 2.3 × 10−3cm2 V−1 s−1, an order of magnitude higher than its thicker (47 nm) counterpart. This difference in device performance can be attributed to the fact that charge transport is principally governed by the top polymer surface at air–polymer interface, which is found to be more disordered owing to the vertical distribution of orientation.

    DOI: https://doi.org/10.1002/pssa.202300236

    DOI: https://doi.org/10.1002/pssa.202300236

    Kyutacar

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300236

  • Optimization of Device Parameters for Back Contact Transparent Conductive Oxide Less Dye Sensitized Solar Cells Fabrication 査読有り 国際誌

    Md Zaman Molla, Ajay Kumar Baranwal, Shuzi Hayase, Shyam S. Pandey

    Physica Status Solidi-A ( Wiley )   220 ( 4 )   2300095(1) - 2300095(7)   2023年06月

     詳細を見る

    担当区分:最終著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Transparent conductive oxide–less (TCO-less) dye-sensitized solar cell (DSSC) has been constructed and characterized employing mesoporous TiO2-coated stainless-steel mesh (S-S-mesh or Mesh) as a bendable photoanode and iodine-based redox electrolyte. Efforts have been directed toward optimizing electronic parameters to enhance the power conversion efficiency (PCE) of TCO-less DSSC to equalize its TCO-based DSSC counterpart. It is found that protection of Mesh is essential for increasing the PCE of TCO-less DSSCs employing iodine electrolyte as assured by suppressed reverse saturation current and better diode factor. The PCE of 5.6% is obtained with TCO-less DSSC compared with TCO-based DSSC with PCE of 6.09%. A bit of decrease in PCE with TCO-less DSSC is due to larger resistance in TiO2/dye/electrolyte as well as within electrolyte as evident by electrochemical impedance spectroscopy (EIS) study owing to the Mesh having perforated holes and larger thickness of electrolyte absorbing sheet of the porous polytetrafluoroethylene film (35 μm) compared to TCO-based DSSC without any barriers and lower electrolyte layer thickness of 25 μm.

    DOI: https://doi.org/10.1002/pssa.202300095

    DOI: https://doi.org/10.1002/pssa.202300095

  • Design and Synthesis of Novel Squaraine Dye with Highly Enhanced Far‐Red Fluorescence and its Interaction with a Model Protein 査読有り 国際誌

    Shekhar Gupta, Yuki Yamawaki, Safalmani Pradhan, Shyam S. Pandey, Tamaki Kato

    Physica Status Solidi-A ( Wiley )   220 ( 24 )   2300226(1) - 2300226(8)   2023年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Novel amine-functionalized symmetrical squaraine (SQ)-dye and fluorescein isothiocyanate (FITC)–SQ–FITC dye conjugate are designed and successfully synthesized, followed by their structural and photophysical characterizations. Symmetrical SQ dye exhibits complete fluorescence quenching in polar solvents, which is explained by considering photoinduced electron transfer (PET) as a dominant quenching pathway. In contrast, FITC–SQ–FITC dye conjugate results in a decrease in an aggregation of both SQ and FITC units and about 47 times enhancement in the far-red fluorescence appearing at 674 nm. This profound enhancement in the far-red fluorescence is explained by the synergistic influence of suppression of aggregation-induced quenching (ACQ) and PET. This newly designed FITC–SQ–FITC dye conjugate shows complete quenching of the far-red fluorescence in phosphate buffer saline (PBS) owing to very strong dye aggregation, as confirmed by spectral absorption investigation. In PBS, it strongly interacts with bovine serum albumin (BSA) (Ka = 1.1 × 104 m−1) used as a model protein breaking the dye aggregation by BSA and increasing far-red fluorescence associated with SQ as a function of increasing BSA concentration. A profound 117 times increase in fluorescence at 674 nm with 25 times of BSA concentration suggests that the designed FITC–SQ–FITC is an excellent far-red probe for dye-protein interaction.

    DOI: https://doi.org/10.1002/pssa.202300226

    DOI: https://doi.org/10.1002/pssa.202300226

    その他リンク: https://onlinelibrary.wiley.com/doi/10.1002/pssa.202300226

  • Bistable Resistive Memory Switches Fabricated by Floating Thin Films of Conjugated Polymers 査読有り 国際誌

    Shubham Sharma, Nikita Kumari, Shuichi Nagamatsu, Masakazu Nakamura, Shyam S Pandey

    Materials Today Electronics ( Elsevier )   4   100043(1) - 100043(1)   2023年06月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The layer-by-layer (LBL) fabrication of conjugated polymer (CPs) thin films while preserving their microstructural features by solution processing is highly desired for compact and flexible electronic circuits. However, it is cumbersome and challenging owing to the unavoidable damage to the underlying layers. To circumvent this issue, the unidirectional floating-film transfer method (UFTM) was utilized for the LBL fabrication of oriented CP thin films on the orthogonal liquid surfaces. Further, resistive bistable memory switches were fabricated by sandwiching a layer of metal nanostructures between the LBL-fabricated oriented CP thin films. The resistive switching phenomena were realized by utilizing the applied bias-dependent charge trapping, holding, and recombination on the available states at vacuum-deposited aluminum nanostructures. The effect of CP backbone conformation on the vertical charge transport was also analyzed via a comparative study of three thiophene-based polymers namely RR-P3HT, PBTTT, and PTB-7. It was revealed that CPs with relatively fewer hydrophobic side chains was more favorable for the facile vertical charge transport due to its preferred face-on conformation on the hydrophilic liquid substrate used in UFTM. It was demonstrated that a non-volatile bistable resistive memory switch fabricated using UFTM-processed oriented thin films of PTB-7 exhibited a remarkably high on-off ratio of 1.5 × 106 with high durability.

    DOI: https://doi.org/10.1016/j.mtelec.2023.100043

    DOI: https://doi.org/10.1016/j.mtelec.2023.100043

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S2772949423000190

  • Controlling the electrocatalytic activities of conducting polymer thin films toward suitability as cost-effective counter electrodes of dye-sensitized solar cells 査読有り 国際誌

    Yuki Kurokawa, Takehito Kato, Shyam S. Pandey

    Synthetic Metals ( Elsevier )   220   117362(1) - 117362(8))   2023年05月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Role dopant anions and solvents in electropolymerized conducting polymers (CPs) on controlling the
    morphology of thin films and electrocatalytic activities to judge their suitability as low-cost counter electrodes (CE) of dye-sensitized solar cells ( DSSCs) was systematically investigated. Amongst various CPs such as polyaniline (PANI), polypyrrole (PPy), and PEDOT with sodium dodecyl sulfate (SDS) as a dopant, PEDOT was found to exhibit the best photovoltaic performance with a photoconversion efficiency (PCE) of 6.99 %. This was attributed to the best lectrocatalytic activity due to the smallest ΔEp, most minor R1, and nano-morphologyassisted high surface area, as confirmed by CV, EIS, and FE-SEM investigations. Using PEDOT as CP, the nature of dopants such as SDS, TFSI, and ClO4 has also been found to control the electrocatalytic activities and the morphology of the fabricated thin films affecting overall photovoltaic performance DSSCs. Amongst the various CP-based CE fabricated using different dopants and solvents, PEDOT:TFSI thin films prepared in acetonitrile solvent and used as CE exhibited not only the best electrocatalytic activity as CE but also demonstrated the best
    photovoltaic performance with PCE of 7.0 %, which almost similar to that of DSSC utilizing Pt as CE with PCE of 7.1 %. Therefore, it was concluded that the nature of CP and dopant ions were vital factors in governing the electrocatalytic activities of the thin films to ensure their suitability as CE for optimal functioning and controlling the DSSC performance.

    DOI: https://doi.org/10.1016/j.synthmet.2023.117362

    DOI: https://doi.org/10.1016/j.synthmet.2023.117362

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S037967792300084X?via%3Dihub

  • 3. Design and Synthesis of Novel NIR Sensitive Unsymmetrical Squaraine Dyes for Molecular Photovoltaics 査読有り

    Safalmani Pradhan Yuki Kurokawa Shyam S Pandey

    Physica Status Solidi-A ( Wiley )   220 ( 24 )   2300145(1) - 2300145(10)   2023年04月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Two novel near-infrared (NIR)-sensitive unsymmetrical squaraine dyes, SQ-258 and SQ-259, for their suitability as a sensitizer in dye-sensitized solar cells (DSSCs) are designed and synthesized, followed by photophysical and photovoltaic characterizations. It is demonstrated that introducing a 1,3-indandione acceptor unit in the central squaric acid core of SQ-259 leads to the suppression of dye aggregation owing to its nonplanar molecular geometry and the broadening of the optical absorption and photon-harvesting window up to 800 nm. Owing to the extended wavelength photon harvesting, SQ-259 improves the photoconversion efficiency (PCE) compared to its SQ-258 dye counterpart. However, despite its wide wavelength photon harvesting, the improvement in the PCE of SQ-259 is less pronounced, and this is attributed to the small driving force for injection of electrons (0.29 eV), hampered electronic coupling, and decreased electron lifetime for resistance to recombination (7.9 ms), which is confirmed by the cyclic voltammetry, quantum chemical calculation, and electrochemical impedance spectroscopic investigations, respectively.

    DOI: https://doi.org/10.1002/pssa.202300145

    DOI: https://doi.org/10.1002/pssa.202300145

    Kyutacar

  • Optical and dielectric realisation of biomolecular detection using gold nanoparticles bio-conjugate with liquid crystal 査読有り 国際誌

    Lokesh K. Gangwar, Vikash Sharma, Amit Choudhary, Gajjala Sumana, Shyam .S. Pandey, Hirofumi Tanaka, Ashok M. Biradar, Rajesh

    Journal of Molecular Liquids ( Elsevier )   380   121754   2023年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Dielectric biosensor based on nematic liquid crystal platform has been fabricated using sandwich immunoassay technique for the detection of a biomolecule, human cardiac troponin I (cTnI). The optical response of Liquid crystal (LC) biosensor and its corresponding frequency-dependent dielectric properties have been investigated as a function of cTnI concentration. Gold nanoparticles conjugate with detection antibody (AB-GNP) is used for the enhancement of both the optical and dielectric signal of the biosensor. AB-GNP binding with cTnI alter the surface energy of the substrate causing disturbances in LC alignment resulting in a change in transmission. The transmission of the LC cell has been found to be varying from dark to bright texture under polarized microscope as a function of cTnI concentration. A change in low-frequency permittivity with increasing cTnI concentration that forms an increasing order of sandwich immunocomplex with AB-GNP revealed an interfacial surface phenomenon. A positive shift in the onset frequency of permittivity is observed due accumulation of immunocomplex with increasing concentration of cTnI at electrode/LC interface. The dielectric response
    of the biosensor is fitted with Hill-Langmuir equation over a concentration range of 0.01 to 10 ng mL−1 cTnI. The dissociation constant ‘Kd’ of 1.02 ± 0.24 ng/mL−1 indicates strong cTnI binding affinity for substrate antibody. A nearby value of 1, calculated for Hill coefficient ‘n’ revealed no co-operativity characteristic of cTnI binding to the primary capture antibody, wherein each binding site of the antibody functions independently at the electrode surface, causing accumulation of charged species revealing LC interfacial surface electrical property.

    DOI: 10.1016/j.molliq.2023.121754

    DOI: 10.1016/j.molliq.2023.121754

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0167732223005573?via%3Dihub

  • Highly Conductive Graphenated-Carbon Nanotubes Sheet with Graphene Foliates for Counter Electrode Application in Dye-Sensitized Solar Cell 査読有り 国際誌

    Yusnita Yusuf, Suhaidi Shafie, Ismayadi Ismail, Fauzan Ahmad, Mohd Nizar Hamidon, Pandey Shyam Sudhir and Lei Wei

    Journal of Science and Technology ( UPM, Malaysia )   31 ( 3 )   2023年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    This work enlightened the synthesis of graphenated-carbon nanotubes sheet (g-CNT) using the floating-catalyst chemical vapor deposition method (FCCVD) for dye-sensitized solar cell (DSSC) application. The carbon injection flow rate in the experiment was varied to 6, 8, and 10 ml/h. The morphological findings revealed that the g-CNT formed a highly conductive network. Excellent conductivity was obtained for the sample g-CNT8 (34.5 S/cm) compared to the sample g-CNT6 (11.2S/cm) and CNT10 (4.76 S/cm). This excellent feature is due to the hybrid structure of the g-CNT8, which creates efficient electron transfer in the materials resulting in higher conductivity. The hybrid structure provides a high surface area that improves conductivity. Therefore, the g-CNT sheet is an excellent candidate to replace the conventional platinum used as a counter electrode (CE) in DSSC.

    DOI: 10.47836/pjst.31.3.12

    DOI: 10.47836/pjst.31.3.12

    その他リンク: http://www.pertanika.upm.edu.my/pjst/browse/prepress-issue?article=JST-3570-2022

  • Bifacial Dye-Sensitized Solar Cells Utilizing Visible and NIR Dyes: Implications of Dye Adsorption Behaviour 査読有り 国際誌

    Suraya Shaban, Ajendra K Vats, Shyam S Pandey

    Molecules ( MDPI )   28 ( 6 )   2784   2023年03月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Bifacial dye-sensitized solar cells (DSSCs) were fabricated utilizing dye cocktails of two dyes, Z-907 and SQ-140, which have complementary light absorption and photon harvesting in the visible and near-infrared wavelength regions, for panchromatic photon harvesting. The investigation of the rate of dye adsorption and the binding strengths of the dyes on mesoporous TiO2 corroborated the finding that the Z-907 dye showed a rate of dye adsorption that was about >15 times slower and a binding that was about 3 times stronger on mesoporous TiO2 as compared to SQ-140. Utilizing the dye cocktails Z-907 and SQ-140 from ethanol, the formation of the dye bilayer, which was significantly influenced by the ratio of dyes and adsorption time, was demonstrated. It was demonstrated that the dyes of Z-907 and SQ-140 prepared in 1:9 or 9:1 molar ratios favoured the dye bilayer formation by subtly controlling the adsorption time. In contrast, the 1:1 ratio counterpart was prone to form mixed dye adsorption; the best performance of the BF-DSSCs was shown when a dye cocktail of Z-907 and SQ-140 in a molar 9:1 ratio was used to prepare a photoanode for 1 h of dye adsorption. The BF-DSSCs thus exhibited PCEs of 4.23% and 3.48% upon the front and rear side light illuminations, a cumulated PCE of 7.71%, and a very good BBF of 83%.

    DOI: https://doi.org/10.3390/molecules28062784

    DOI: https://doi.org/10.3390/molecules28062784

    Kyutacar

    その他リンク: https://www.mdpi.com/1420-3049/28/6/2784

  • Bioactive potential of morin loaded mesoporous silica nanoparticles: A nobel and efficient antioxidant, antidiabetic and biocompatible abilities in in-silico, in-vitro, and in-vivo models 査読有り 国際誌

    Rout George Kerry, Kshitij RB Singh, Subhasis Mahari, Atala Bihari Jena, Bijayananda Panigrahi, Kahnu Charan Pradhan, Satyanarayan Pal, Bhagaban Kisan, Jagneshwar Dandapat, Jay Singh, Shyam S Pandey, Ravindra Pratap Singh, Sanatan Majhi

    Open Nano ( Elsevier )   10   100126   2023年02月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Developing a delivery system has become crucial in engineering cutting-edge next-generation theranostic approaches. Therefore, in the present research work, a customized Mesoporous silica nanoparticle (MSiNPs) was designed by adapting the Stöber method with silane polymerization for Morin (MO) adsorption. The average size of MSiNPs was 50–130 nm as measured by TEM, while FE-SEM revealed a spherical surface shape. According to Raman and FTIR spectra, while the synthesis of MSiNPs, CTAB (a surfactant) was eliminated from MSiNPs, silane was functionalized, and with a loading efficiency of 10.28 ± 0.22%, MO was adsorbed. Molecular docking was used to perform in-silico studies to investigate the interaction of native MO with antidiabetic and antioxidant enzymes. Furthermore, the antioxidant and antidiabetic effects of both MO adsorbed MSiNPs, and native MO were examined in vitro, with the former showing promise even at lower concentrations than the latter. The cell survival experiment on Mouse macrophages RAW 264.7 and HCT cells revealed that MO adsorbed MSiNPs were nontoxic up to 15 μg/ml. The acute toxicity of different concentrations of MO adsorbed MSiNPs was also conducted in an in vivo model zebrafish (Danio rerio), where the study was conducted for about 96 h and evaluated for histological significance. The findings described above revealed that the MSiNPs were electrochemically, structurally, and thermally stable and MO adsorbed MSiNPs were nontoxic and biocompatible, implying that it might be an effective drug delivery vehicle for MO in the future. Moreover, in coming times, this nano-delivery system with effective biodistribution of the adsorbed MO could be explored as an antidiabetic and anti-cancer agent.

    DOI: https://doi.org/10.1016/j.onano.2023.100126

    DOI: https://doi.org/10.1016/j.onano.2023.100126

    その他リンク: https://www.sciencedirect.com/science/article/pii/S2352952023000063

  • Improving vertical charge transport in organic Schottky diodes via Interface engineering of large-area conducting polymer thin films fabricated on hydrophilic liquid surface of tunable surface energy 査読有り 国際誌

    Subhajit Jana, Nikita Kumari, Shyam S Pandey, Rajiv Prakash

    Applied Surface Science ( Elsevier )   616   156377   2023年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Molecular orientation and stacking genre proved to be one of the decisive factors for the performance of conducting polymer (CP) based electronic devices. In this context, harnessing the key advantages of the ribbon shaped “floating-film transfer method” (FTM) along with an interfacial engineering approach has been utilized for molecular rearrangement in polymer thin-films formed on the surface of a high surface energy hydrophilic liquid mixture. In this novel subphase modified floating-film transfer method (SM-FTM), dodecyl benzene sulfonic acid (DBSA) has been used to control the molecular backbone stacking proximate to the solution-liquid interface and regioregular-poly(3-hexylthiophen-2,5-diyl) (rr-P3HT) was used as the model CP to probe the polymer-DBSA interaction. The molecular arrangements in microcrystalline domains, electronic band structures, and the evolution of surface texture at the solution-liquid interface have been investigated through multiple characterization tools. After that, the electrical performances of Schottky barrier diodes (SBDs) were studied in an ITO/P3HT/AlOx/Al sandwiched structure and a dramatic enhancement of rectification ratio up to 8.2 × 106 at ± 6 V was achieved. Further, an analytical model for SM-FTM, developed using lubrication theory and thin-film dynamics, has also been presented to elucidate the polymer spreading dynamics and the mechanism of molecular rearrangement at the interface.

    DOI: https://doi.org/10.1016/j.apsusc.2023.156377

    DOI: https://doi.org/10.1016/j.apsusc.2023.156377

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0169433223000533

  • Cylindrical transparent conductive oxide-free dye-sensitized solar cells with treated flat titanium sheet 査読有り 国際誌

    Azwar Hayat, Ajay Kumar Baranwal, Masaki Nakamura, Fujisawa Shigeki, Shyam S Pandey, Shuzi Hayase

    Journal of Photonics for Energy ( SPIE )   2022年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)


    Conventional dye-sensitized solar cells (DSSCs) require two transparent conductive oxide (TCO) glasses as working and counter electrodes and are one of the most costly components posing an appreciable cost burden for production and commercialization. To circumvent this issue, we propose a TCO-free device structure utilizing titanium (Ti) sheets as a substitute for TCO. This back contact device structure not only allows the removal of the costly TCO component from the working electrode but also enhances the extent of photons absorbed by the photoanode. A flat titanium sheet with microholes (FTS-MH) was successfully applied to fabricate cylindrical TCO-free-DSSCs) with a titanium sheet as a back contact electrode. When the H2O2 surface-treated FTS-MH substrate generating dense anatase TiO2 nanosheets was used as a photoanode, there was a pronounced improvement in efficiency from 5.76% to 8.59%. This was mainly attributed to the lower interfacial resistance facilitated by improved electrical contact between the conducting FTS-MH substrate and mesoporous TiO2 layer since enhancement in the dye loading was only 8.6%.

    DOI: https://doi.org/10.1117/1.JPE.12.045502

    DOI: https://doi.org/10.1117/1.JPE.12.045502

    その他リンク: https://www.spiedigitallibrary.org/journals/journal-of-photonics-for-energy/volume-12/issue-4/045502/Cylindrical-transparent-conductive-oxide-free-dye-sensitized-solar-cells-with/10.1117/1.JPE.12.045502.short

  • Controlling the molecular orientation of a novel diketopyrrolopyrrole-based organic conjugated polymer for enhancing the performance of organic field-effect transistors 査読有り 国際誌

    Moulika Desu, Shubham Sharma, Kuang-Hao Cheng, Yu-Han Wang, Shuichi Nagamatsu, Jyh-Chien Chen, Shyam S Pandey

    Organic Electronics ( Elsevier )   113   106691   2022年11月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    A novel organic conjugated copolymer p(DPP-BZC) was utilized as a solution-processable organic semiconductor and its large area of the unidirectionally oriented thin film was fabricated by the Ribbon-shaped floating film transfer (FTM) method. Organic field-effect transistors (OFETs) fabricated using oriented thin films of this polymer demonstrated a clear p-type semiconducting behaviour and anisotropic charge carrier transport. A maximum orientation with a dichroic ratio of 5.1 was obtained in the FTM-processed thin film under optimized condition with liquid substrate viscosity, temperature and polymer solution concentration of 6.12 cst, 50 °C and 3% (w/v), respectively. Out-of-plane XRD and in-plane GIXD results revealed that oriented thin films of this copolymer are semicrystalline and adopt purely edge-on conformation. The implication of surface modification of Si/SiO2 gate dielectric utilizing HMDS. OTS and CYTOP on the charge carrier transport revealed that substrate with high-surface-energy hampers the on/off ratio, operating voltage and charge carrier mobility (μ). On the other hand, Si/SiO2 substrate treated with CYTOP having relatively lower surface energy demonstrated the best device performance with the highest μ of 2.7 x 10−2 cm2/Vs, which is > 30 times higher as compared to that of its non-oriented spin-coated device counterparts an μ of 8.0 x 10−4 cm2/V

    DOI: https://doi.org/10.1016/j.orgel.2022.106691

    DOI: https://doi.org/10.1016/j.orgel.2022.106691

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S1566119922002634

  • Mechanical Modelling and Stress-Strain Prediction of Electroactive Polymer-Based Capacitive Sensor under Multiaxial Loads using Uniaxial Tensile Data 査読有り 国際誌

    Nitin Kumar SINGH, Kazuto TAKASHIMA and Shyam S. PANDEY

    Sensors and Transducers ( IFSA Publishing )   259 ( 5 )   12 - 18   2022年10月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    In this paper, mechanical modelling and stress-strain prediction of the ionic type of electroactive polymer (EAP)
    based capacitive strain sensor under multiaxial loading has been performed using uniaxial tensile data. A highly stretchable
    sensor with > 400 % strain was fabricated using Styrene-ethylene-butylene-styrene (SEBS) rubber and Dodecyl benzene
    sulphonic acid (DBSA) doped polyaniline (PANI) composite material as a dielectric film, and carbon grease as top and bottom
    electrodes. From uniaxial tensile measurements, a three-dimensional constitutive model of the EAP strain sensor was validated.
    Experimental data obtained from the uniaxial tensile measurement was fitted according to the Ogden-based constitutive
    mathematical model. For predicting the stress-strain behaviour of the sensor under the multiaxial loads, 2nd term of the Ogden
    model was demonstrated to fit well with uniaxial tensile data. Such modelling can play a significant role in designing any type
    of EAP-based sensor for various operations under variable loading conditions.

    その他リンク: https://www.sensorsportal.com/HTML/DIGEST/october_2022/Vol_259/P_3275.pdf

  • Unraveling the Implications of Macromolecular Orientation on the Planar and Vertical Charge Transport in Organic Electronic Devices 査読有り 国際誌

    Shubham Sharma, Ajendra Kumar Vats, Manish Pandey, Shuichi Nagamatsu, Jyh-Chien Chen, Shyam S Pandey

    ACS Applied Polymer Materials ( American Chemical Society )   4 ( 11 )   8315 - 8323   2022年10月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    The role of film morphology of conjugated polymers (CPs) and their macromolecular conformation with respect to the substrate in governing charge transport and overall device performances has been a matter of debate. The nature of the macromolecular orientation of CPs in thin films has a pivotal role in controlling the performance of planar and sandwich devices. Thin-film characterizations unveiled that spin-coated films are isotropic with mixed edge-on/face-on conformation, whereas unidirectional floating film transfer method (UFTM) films are anisotropic with edge-on-oriented micrometer-sized ordered domains. To unravel the explicit role of molecular orientation on device performance, two types of devices, organic Schottky diodes (OSDs) for out-of-plane carrier transport and organic field-effect transistors (OFETs) for in-plane charge transport, were fabricated and characterized. Isotropic and relatively low crystalline spin-coated films exhibited superior transport characteristics in the out-of-plane direction than UFTM films irrespective of the crystallinity. On the other hand, edge-on-oriented UFTM thin films demonstrated remarkably enhanced in-plane charge transport with more than two orders of magnitude of enhancement in the field-effect mobility. The nature of molecular orientation of different films is significantly correlated with the performance of the OSDs and OFETs.

    DOI: https://doi.org/10.1021/acsapm.2c01283

    DOI: https://doi.org/10.1021/acsapm.2c01283

    Kyutacar

    その他リンク: https://pubs.acs.org/doi/full/10.1021/acsapm.2c01283

  • Synthesis and Characterization of Newly Designed and Highly Solvatochromic Double Squaraine Dye for Sensitive and Selective Recognition towards Cu2+ 査読有り

    Linjun Tang, Shubham Sharma, Shyam S Pandey

    Molecules ( MDPI )   27 ( 19 )   6578   2022年10月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Synthesis and characterization of a novel and zwitterionic double squaraine dye (DSQ) with a unique D-A-A-D structure is being reported. Contrary to the conventional mono and bis-squaraine dyes with D-A-D and D-A-D-A molecular frameworks reported so far, DSQ dye demonstrated strong solvatochromism allowing for the multiple ion sensing using a single probe by judicious selection of the suitable solvent system. The DSQ dye exhibited a large solvatochromic shift of about 200 nm with color changes from the visible to NIR region with metal ion sensitivity. Utilization of a binary solvent consisted of dimethylformamide and acetonitrile (1:99, v/v), highly selective detection of Cu2+ ions with the linearity range from 50 μM to 1 nM and a detection limit of 6.5 × 10−10 M has been successfully demonstrated. Results of the Benesi–Hildebrand and Jobs plot analysis revealed that DSQ and Cu2+ ions interact in the 2:1 molecular stoichiometry with appreciably good association constant of 2.32 × 104 M−1. Considering the allowed limit of Cu2+ ions intake by human body as recommended by WHO to be 30 μM, the proposed dye can be conveniently used for the simple and naked eye colorimetric monitoring of the drinking water quality.

    DOI: https://doi.org/10.3390/molecules27196578

    DOI: https://doi.org/10.3390/molecules27196578

    その他リンク: https://www.mdpi.com/1420-3049/27/19/6578

  • Electronic versus Ionic Electroactive Polymers (EAPs) Strain Sensors for Wearable Electronics: A Comparative Study 査読有り

    Nitin Kumar Singh, Kazuto Takashima, Shyam Sudhir Pandey

    Engineering Proceedings ( Multidisciplinary Digital Publishing Institute )   21 ( 1 )   2022年08月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Electroactive polymer (EAP) strain sensors have gained appreciable attention as a potential candidate for their application in the area of soft electromechanical devices and have been widely used in soft robotics, healthcare, augmented reality, and wearable devices. In this research, a systematic comparison has been made by fabricating the electronic and ionic types of capacitive EAP strain sensors. To accomplish this, a combination of silicone rubber sandwiched between silver-coated stretchable fabric electrodes is used as an electronic type of EAP sensor, while a conducting and stretchable freestanding film consisting of Styrene-ethylene-butylene-styrene (SEBS) rubber and dedocyl benzene sulfonate acid (DBSA) doped polyaniline composite film sandwiched between carbon grease electrodes is chosen as an ionic type of EAP sensor. Mechanical characterization in terms of the uniaxial tensile testing was …

    DOI: https://doi.org/10.3390/engproc2022021001

    DOI: https://doi.org/10.3390/engproc2022021001

    その他リンク: https://www.mdpi.com/2673-4591/21/1/1

  • Fabrication, characterization and modelling of the fabric electrode-based highly stretchable capacitive strain sensor 査読有り

    Nitin Kumar Singh, Kazuto Takashima, Shyam S Pandey

    Materials Today Communications ( Elsevier )   32   104095   2022年07月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Highly stretchable and capacitance-based strain sensors were fabricated utilizing highly stretchable silicone elastomer as dielectric film sandwiched between the conducting and stretchable cloth-based top and bottom electrodes. Electromechanical characterizations for the proposed sensor after multiple and reversible loading and unloading cycles up to 150% applied strain were conducted followed by the modelling of the sensing performance. It has been shown that the sensor exhibits reproducible electromechanical performance under multiple reversible stretching and relaxation cycles. There was a very small deviation (< 10%) in the observed values of the capacitance upon the applied strain of 150% up to the 1000 loading and unloading cycles. Tensile measurement for the sensor under various applied strains, not only exhibits almost constant force indicating negligible Mullins effect and negligible time-dependent changes at a fixed strain up to 100% suggesting that viscoelastic losses can also be neglected. From uniaxial tensile experiments, constitutive model of the dielectric elastomer sensor was validated. For the fitting of the experimental data obtained from the uniaxial tensile measurement, a variety of strain energy formulations have been compared for predicting the constitutive behaviour of sensor using the Mooney– Rivlin, Neo-Hookean, Yeoh and Ogden models, where 2nd term of the Ogden model was found to explain the experimental tensile data most accurately. To explain some observed losses at 150% of applied strain, the Prony series-based time dependent model was used for predicting stress at any value of time and it was found that experimental data was well fit with 4th order of Prony series.

    DOI: https://doi.org/10.1016/j.mtcomm.2022.104095

    DOI: https://doi.org/10.1016/j.mtcomm.2022.104095

    その他リンク: https://www.sciencedirect.com/science/article/pii/S2352492822009473

  • Interplay of viscosities in controlling the orientation of conjugated polymer thin films fabricated by floating film transfer method 査読有り

    Shubham Sharma, Ajendra K Vats, Shuichi Nagamatsu, Shyam S Pandey

    IEEE Explore ( IEEE )   116 - 119   2022年07月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Japan   http://www.amfpd.jp/   2022年07月05日  -  2022年07月08日

    DOI: 10.23919/AM-FPD54920.2022.9851340

    DOI: 10.23919/AM-FPD54920.2022.9851340

    その他リンク: http://www.amfpd.jp/

  • Fabrication and Characterization of Oriented Thin Films of DPP-based Conjugated Copolymer Prepared by Friction Transfer Method 査読有り

    Yuki Kurokawa, Ajendra K Vats, Shuichi Nagarnatsu, Shyam S Pandey

    IEEE Explore ( IEEE )   124 - 127   2022年07月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Japan   http://www.amfpd.jp/   2022年07月05日  -  2022年07月08日

    DOI: 10.23919/AM-FPD54920.2022.9851297

    DOI: 10.23919/AM-FPD54920.2022.9851297

    その他リンク: http://www.amfpd.jp/

  • Tear strength estimation of electroactive polymer-based strain sensors 査読有り

    Nitin Kumar Singh, Kazuto Takashima, Shyam Sudhir Pandey

    Electroactive Polymer Actuators and Devices (EAPAD) XXIIV ( SPIE )   12042   424 - 428   2022年04月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    USA   https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12042/1204217/Tear-strength-estimation-of-electroactive-polymer-based-strain-sensors/10.1117/12.2627807.short  

    Electroactive polymer-based sensors are subjected to repeated loading and unloading cycles under variable applied strains and estimation of the tear strength plays a critical role in determining durability. A trouser type of specimen made from conducting and stretchable freestanding films consisting of SEBS rubber and dodecyl benzenesulfonic acid (DBSA) doped polyaniline composite was used for fabricating the capacitive strain sensor and tear strength estimation. Strain energy density for the composite film was calculated from the tear test data aiming towards the prediction of the life of the specimen. Our results revealed a very high value (150 newton/mm) of tear strength, leading to the sustainability of the film up to millions of cycles.

    DOI: https://doi.org/10.1117/12.2627807

    DOI: https://doi.org/10.1117/12.2627807

    その他リンク: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12042/1204217/Tear-strength-estimation-of-electroactive-polymer-based-strain-sensors/10.1117/12.2627807.short

  • Computational molecular design of NIR dyes with varying anchoring groups for improving the efficiency and stability of dye-sensitized solar cells 査読有り 国際誌

    Pandey S.S., Vats A.K., Tang L., Hayase S.

    Japanese Journal of Applied Physics   61 ( SB )   SB1021-1 - SB1021-11-   2022年01月

     詳細を見る

    担当区分:筆頭著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Design and development of near-infrared (NIR) dyes with strong binding on the TiO2 surface is inevitable for the realization of the dye-sensitized solar cells (DSSCs) with improved efficiency and stability. A series of NIR dyes bearing different anchoring groups have been designed considering their suitability as sensitizers for DSSCs based-on TiO2 and iodine-based redox electrolytes. Under the Gaussian program, density functional theory (DFT)/6-311G/B3PW91 level of theory and time-dependent-DFT using the polarizable continuum model is shown optimum for the prediction of the highest occupied molecular orbital energy level and electronic absorption spectra. The reliability of the calculated results was validated by corresponding experimental results for some of the representative dyes. It has been demonstrated that λ max at full width at half maximum in calculated absorption spectra exhibited an excellent match with the experimentally estimated Eg of the sensitizers leading to the proposal of a new method for the construction of the theoretical energy band diagram. Amongst newly designed sensitizers, dyes bearing dual anchoring groups like SQ-149, SQ-150, SQ-158, SQ-161 and SQ-162 are highly promising not only for good NIR photon harvesting but also to impart to improved DSSC stability.

    DOI: 10.35848/1347-4065/ac28e8

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125598296&origin=inward

  • Charge transfer and catalytic properties of various PEDOTs as Pt-free counter electrodes for dye-sensitized solar cells 査読有り 国際誌

    Yuki Kurokawa, Ajendra Kumar Vats, Takehito Kato, Suhaidi Shafie, Shyam S. Pandey

    Japanese Journal of Applied Physics   61 ( SB )   SB1010-1 - SB10110-6   2022年01月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Despite the high electrocatalytic activity of Pt and the fact it is a champion catalyst for the counter electrode (CE) of state-of-art dye-sensitized solar
    cells (DSSCs), its high cost, rarity, and the concern about its possible deterioration by the iodine-based redox electrolyte, has compelled the search
    for suitable and low-cost catalysts for CEs. To circumvent this issue, efforts were directed to exploring the suitability of various types of poly(3,4-
    ethylenedioxythiophene)(PEDOT)-based conducting polymers as the most suitable electrocatalysts for low-cost CEs. Amongst various types of
    PEDOT explored as CEs, micelle directed electropolymerized PEDOT:SDS (:sodium dodecyl sulfate) exhibited not only excellent catalytic activity
    (>Pt), as confirmed by cyclic voltammetry and electrical impedance spectroscopy investigations, but also fairly good photovoltaic performance
    exhibiting photoconversion efficiency of 5.8%, which is only slightly lower than the performance shown by Pt-based CE for the DSSCs fabricated
    under similar experimental conditions. Further improvement for the PEDOT:SDS-based CE surpassing the Pt-based CE is envisioned by
    morphological control and making their suitable composites with carbon-based nanomaterials.

    DOI: https://doi.org/10.35848/1347-4065/ac2cf8

    DOI: https://doi.org/10.35848/1347-4065/ac2cf8

    その他リンク: https://iopscience.iop.org/article/10.35848/1347-4065/ac2cf8

  • Bifacial dye-sensitized solar cells utilizing green colored NIR sensitive unsymmetrical squaraine dye 査読有り 国際誌

    Suraya Shaban, Pritha Roy, Ajendra K. Vats and Shyam S. Pandeyy

    Japanese Journal of Applied Physics   61 ( SB )   SB1005-1 - SB1005-6   2022年01月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Dye-sensitized solar cells (DSSCs) with the capability of photon harvesting from both front and rear sides, consisting of newly developed NIR dye
    (SQ-140), iodine-based redox electrolyte, and transparent counter electrode with high bifaciality factor (BFF) and good cumulated photoconversion
    efficiency (PCE), are successfully fabricated and characterized. The use of transparent TiO2-based photoanode leads to improved BFF as
    compared to its opaque TiO2 counterparts: from 74% to 86% under similar experimental conditions and device parameters. The high molar
    extinction coefficient of the NIR dye SQ-140, needing a thinner TiO2 layer, was found to be advantageous to maintaining the high BFF even in
    thicker TiO2 films without serious compromise in the PCE. The lower efficiency of the bifacial DSSC under rear illumination was attributed to the
    hampered optical penetration as well as absorption of light by the intense colored iodine-based redox electrolyte.

    DOI: https://doi.org/10.35848/1347-4065/ac3570

    DOI: https://doi.org/10.35848/1347-4065/ac3570

    その他リンク: https://iopscience.iop.org/article/10.35848/1347-4065/ac3570

  • Recent progress in the macroscopic orientation of semiconducting polymers by floating film transfer method, 査読有り 国際誌

    Manish Pandey, Vipul Singh, Chandan Kumar, Shyam S. Pandey, and Masakazu Nakamura

    Japanese Journal of Applied Physics   61 ( SB )   SB0801-1 - SB0801-12   2022年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Orienting semiconducting polymers (SCPs) using solution-processable techniques for organic electronic devices is essential for realizing a
    printable electronics device. Preparation of oriented films on liquid substrates and transferring on actual device substrate offers many advantages,
    including layer-by-layer coating, independent control of morphology, freedom to choose substrates, and device geometry. The floating films transfer
    method (FTM) has emerged as a unique method to prepare oriented films of SCP using solution processing. Here, we review recent progress in
    this method from the viewpoint of improvement in FTM to orient SCPs and their anisotropy in organic field effect transistors. In addition, the use of
    FTM films in sensing applications is also reviewed.

    DOI: https://doi.org/10.35848/1347-4065/ac2f20

    DOI: https://doi.org/10.35848/1347-4065/ac2f20

    その他リンク: https://iopscience.iop.org/article/10.35848/1347-4065/ac2f20

  • A COMPARATIVE STUDY OF GRAPHENATED-CARBON NANOTUBES COTTON AND CARBON NANOTUBES AS CATALYSTS FOR COUNTER ELECTRODE IN DYE-SENSITIZED SOLAR CELLS 査読有り 国際誌

    Yusnita Yusuf, Suhaidi Shafie, Ismayadi Ismail, Fauzan Ahmad, Mohd Nizar Hamidon, Shyam S Pandey, Nazalea Yazmin Muhammad, Wei Lei

    Malaysian Journal of Microscopy   2021年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    This work reports a comparative study of synthesized graphenated-carbon nanotubes cotton (g-CNTC), standard carbon nanotubes (CNTP), and conventional platinum (Pt) thin layer which are employed as the counter electrodes in dye-sensitized solar cells (DSSC). The g-CNTC was synthesized via the floating-catalyst chemical vapor deposition (FCCVD) method. Subsequently, the g-CNTC was made into a uniform paste and deposited for the counter electrode layer. The results obtained from FESEM/TEM, Raman spectroscopy, CV and I-V measurements respectively exposed the structural, graphitization and I-V characteristics. Briefly, the morphology of g-CNTC showed the growth of graphene foliates out-sidewalls of CNT with a diameter of 40 nm. The graphitization of g-CNTC showed two dominant peaks namely the D (1355 cm-1) and G (1608 cm-1) bands with strong intensities. The g-CNTC counter electrode provided good electrical conductivity (3.66×10-3 to 6.45×10-3 S/cm), which is a significant feature to employ counter electrodes to enhance DSSC performance. In addition, the g-CNTC counter electrode offered an excellent catalytic activity for iodide/triiodide reaction and exhibited 3.49 % of photovoltaic conversion energy, which was much higher compared to CNTP (2.93 %) and platinum (3.12 %), respectively.

    その他リンク: https://malaysianjournalofmicroscopy.org/ojs/index.php/mjm/index

  • Highly sensitive organic phototransistors fabricated from PCPDTBT: PCBM blend 査読有り 国際誌

    Yadav N., Kumari N., Ando Y., Pandey S.S., Singh V.

    Journal of Physics: Conference Series   2070 ( 1 )   2021年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Organic phototransistors (OPTs) play a crucial role in various light sensing and imaging applications. In this work, we have fabricated highly sensitive Poly[2,6-(4,4-bis-(2ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) blended thin film based OPTs using ribbon-floating film transfer method. A high charge carrier mobility (µ) of 0.002 cm2V-1s-1 and an Ion/Ioff of 6 × 104 was showcased by the blended polymer thin film based OPT as compared to its pristine polymer thin film based counterpart which had a µ of 0.001 cm2V-1s-1 and an Ion/Ioff of 9 × 103. Further, the blended polymer thin film based OPT demonstrated a high photosensitivity of 6.6 × 103 and a photoresponsivity of 0.13 A/W towards white light which were much superior than those of many of the previously reported polymer thin film based OPTs. The results hold crucial significance towards the development of cost effective blended polymer thin film based OPTs.

    DOI: 10.1088/1742-6596/2070/1/012040

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85120428279&origin=inward

  • Implication of color of sensitizing dyes on transparency and efficiency of transparent dye-sensitized solar cells 査読有り 国際誌

    Roy P., Vats A.K., Tang L., Pandey S.S.

    Solar Energy   225   950 - 960   2021年09月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Dye-sensitized solar cells (DSSCs) are one of the potential candidates for the fabrication of colourful and see-through solar cells for energy harvesting esthetic windows. However, a trade-off between transparency and power conversion efficiency (PCE) has to be tackled amicably to realize the solar cells with good PCE and transparency. Judicious selection of dyes to bypass the light absorption in the high eye-sensitivity region (500–600 nm) is one of the plausible solutions. This was demonstrated utilizing yellow (D-131) and red (N-719) commercial dyes along with newly developed blue (SQ-138) and green coloured (SQ-140) dyes with intense and sharp light absorption mainly in the far-red to near-infrared (NIR) wavelength region. Transparent DSSCs fabricated using the most commonly used red-coloured dye N-719 although exhibited an increase in the PCE from 2.9% to 5.3% upon increasing the thickness of the transparent TiO2 layer from 4 μm to 10 μm but resulted in a serious loss in the average visible transparency (AVT) from 58.6% to 7.3% making the DSSC non-transparent. Contrary to this, under similar thickness variations, dyes D-131, SQ-138 and SQ-140 exhibiting very high AVT of >70% maintained the AVT > 40%, which is necessary for good visual perception.

    DOI: 10.1016/j.solener.2021.08.014

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85112239425&origin=inward

  • Investigation of Orientation in the Thin Films of Conjugated Polymer and NIR Dye Blends Fabricated by Friction Transfer Method 査読有り

    Yuki Kurokawa, Shuichi Nagamatsu, Shyam S Pandey

    IEEE Explore ( IEEE )   2021年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Japan   Conference: 28th International Workshop on Active Matrix, Flatpanel Displays and Devices (AM-FPD21)A   2021年06月29日  -  2021年07月02日

    Improved film’s crystallinity and facile charge transport has been well demonstrated by orienting conjugated polymers using solution based thin film fabrication followed by thermal annealing, need for huge halogenated solvents and high temperature annealing are stumbling block for industrially viable large area thin film fabrication. Herein, we report the fabrication of oriented thin films regioregular P3HT by solvent-free friction transfer (FT) technique and enhancement its further enhancement by adding NIR sensitive squaraine dyes. Apart from assisting the molecular orientation of P3HT, it has been demonstrated that dye molecules are also get oriented and a synergistic match between the alkyl chains of the polymer and dye molecule leads to promotion for the extent of the molecular orientation in the dye molecules.

    DOI: 10.23919/AM-FPD52126.2021.9499214

    その他リンク: https://ieeexplore.ieee.org/document/9499214

  • Extreme Orientational Uniformity in Large-Area Floating Films of Semiconducting Polymers for Their Application in Flexible Electronics 査読有り

    Manish Pandey, Heriyanto Syafutra, Nikita Kumari, Shyam S. Pandey, Ryo Abe, Hiroaki Benten, and Masakazu Nakamura

    ACS Applied Materials & Interfaces ( American Chemical Society )   2021年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Layer-by-layer fabrication of uniformly oriented thin films over large areas by cost-effective solution-based approaches can open new horizons for the realization of high-performance organic circuits in various applications. In this work, fabrication of a large-area ≈40 cm2 film with uniform orientation is reported for poly(3,3‴-dialkylquaterthiophene) (PQT) using a unidirectional floating film transfer method (UFTM). Orientation characteristics and charge transport anisotropy were analyzed using polarized UV–vis spectral mapping and fabrication of bottom-gated organic field-effect transistors (OFETs) from different regions. Films were found to be highly oriented with an optical dichroic ratio of ca. 15. Orientation characteristics reveal that films were highly oriented along the width of the film, covering >70% of the area, and angle-dependent field-effect mobilities are in good agreement with the orientation of the polymer backbones. These highly oriented films resulted in charge transport anisotropy of 8.9. An array of bottom-gated OFETs fabricated along the length of single large-area (≈15 × 2.5 cm2) thin film demonstrated the average field-effect mobility of 0.0262 cm2/(V s) with a very narrow standard deviation of 12.6%. We also demonstrated that film thickness can be easily tuned from 5.6 to 45 nm by increasing the PQT concentration, and field-effect mobility is highly reproducible even when the film thickness is 10 nm. Microstructural characterization of the thus-prepared large-area thin films revealed the edge-on stacked polymer backbones and surface roughness of <1 nm as probed by grazing incidence X-ray diffraction and atomic force microscopy, respectively. Flexible OFETs with bottom-gate top-contact geometry were also fabricated, having average field-effect mobility of 0.0181 cm2/(V s). There was no considerable change in mobility after bending the flexible devices at different radii.

    DOI: 10.1021/acsami.1c09671

    その他リンク: https://pubs.acs.org/doi/abs/10.1021/acsami.1c09671

  • Assisted alignment of conjugated polymers in floating film transfer method using polymer blend 査読有り

    Heriyanto Syafutra, Manish Pandey, Nikita Kumari, Shyam S Pandey, Hiroaki Benten, Masakazu Nakamura

    Thin Solid Films ( Elsevier )   734   138814(1) - 138814(8   2021年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Orientating conjugated polymers (CPs) in thin films is an attractive technique for obtaining anisotropic properties, resulting in improved device performances. Template-assisted alignment using pre-patterned substrates has been widely used to orient various polymers irrespective of their orientation capability. In this work, we report that using the floating film transfer method, the orientation of guest polymers can be in-situ assisted via blending with a host polymer during film fabrication. Dichroic Ratio (DR) of two guest CPs such as poly[2,5-(2-octyldodecyl)-3,6-diketopyrrolopyrrole-alt-5,5-(2,5-di(thien-2-yl)thieno[3,2-b]thiophene)] and poly(9,9-di-n-octylfluorenyl-2,7-diyl) were found to be enhanced when blended with host polymer poly(3,3‴-didodecyl-quaterthiophene) (PQT). DR of the host PQT decreases monotonically with an increase in the guest polymer proportion, suggesting that guest polymers are well mixed in the host matrix. The electronic absorption spectra and atomic force microscopy results revealed that blended polymers were well mixed without any phase separation. DR of the guest polymers in the blend was the same even when the overall blend concentration was increased twice to increase the overall film thickness.

    DOI: 10.1016/j.tsf.2021.138814

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0040609021002972

  • Development of High-Sensitivity Poly (2, 7-(9, 9-dioctylfluorene)-alt-5, 5-(4', 7'-di-2-thienylbenzo [c][1, 2, 5] thiadiazole)) Thin-Film-Based Phototransistors by the Ribbon-Floating Film Transfer Method 査読有り 国際誌

    Nidhi Yadav, Nikita Kumari, Yoshito Ando, Shyam S. Pandey, and Vipul Singh

    Physica Status Solidi (RRL) - Rapid Research Letters ( WILEY-V CH VERLAG GMBH )   2021年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Alignment of polymer chains hold key to development of highly functional polymer based field effect transistors. Our recently developed ribbon-floating film transfer method (ribbon-FTM) has the potential for development of polymer thin films with highly aligned chains which are desirable for fabrication of efficient planar devices. These thin films consisting of well aligned polymer chains exhibit high degree of optical and electronic anisotropies. In this work we report ribbon-FTM processed thin film based organic photosensitive transistors of PFO-DBT. Under optimized fabrication conditions polymer FETs based on PFO-DBT demonstrated a charge carrier mobility of 0.002 cm²/Vs and an on-off ratio of 5 × 10⁴ under dark conditions. The devices have further demonstrated a Photosensitivity of ∽10⁴ and 10³ and a high Responsivity of 8.37 A/W and 4.6 A/W against green and red light illuminations, respectively. The results hold promise for development of conducting polymer based high performance photosensitive OFETs. This article is protected by copyright. All rights reserved.

    DOI: 10.1002/pssr.202100185

    その他リンク: https://onlinelibrary.wiley.com/doi/epdf/10.1002/pssr.202100185

  • Probing the metal/conducting polymer interface and implications of the metal diffusion in two-terminal sandwich devices 査読有り 国際誌

    Nidhi Yadav, Nikita Kumari, Yoshito Ando, Shyam S Pandey, Vipul Singh

    Synthetic Metals ( Elsevier )   278   116797(1) - 116797(11)   2021年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    In this article, we have investigated the role of polymer regio-regularity and film fabrication technique in reducing metal diffusion from top electrodes in sandwich type devices. Poly(3-hexyl thiophene)(P3HT) polymer of varying regio-regularity was chosen for investigation and its corresponding thin films were fabricated by spin-coating(SC) and floating film transfer method(FTM). Sandwich devices with a top interface between gold and i) FTM coated regio-regular (rr) P3HT, ii) FTM coated non-regiocontrolled (nr) P3HT, iii) SC nr-P3HT and iv) SC rr-P3HT were fabricated. The current density vs voltage (J-V) characteristics of the devices revealed non-ohmic characteristics. Estimation of interfacial hole barrier heights using Fowler Nordheim tunneling model revealed a small barrier of 1.12 eV for the isotropic spin-coated nr-P3HT film which increased to 1.37 eV with an increase in film anisotropy for the FTM nr-P3HT film. The barrier height also gradually declined from 1.37 eV to 1.05 eV with increase in regioregularity from FTM nr-P3HT to FTM rr-P3HT. These observations were confirmed through optical and structural characterizations along with depth profiling of metal diffusion using XPS. Pronounced Au diffusion to a higher depth was observed in the XPS results for the highly anisotropic FTM film that decreased subsequently with decrease in anisotropy from FTM to spin-coated film. It was thus deduced that a judicious selection of fabrication technique and polymer aids in reducing metal diffusion leading to improved device performance. The results hold crucial significance towards the fabrication of efficient organic photodetectors that have a sandwich type device architecture.

    DOI: 10.1016/j.synthmet.2021.116797

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0379677921001028

  • Development of PCPDTBT thin film based highly sensitive organic phototransistors 査読有り 国際誌

    Nidhi Yadav, Nikita Kumari, Shyam S Pandey, Vipul Singh

    Materials Today' Proceeding ( Elsevier )   2021年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    In this report, we have proposed a novel ribbon-FTM method to develop highly oriented polymer thin films. A donor–acceptor (D-A) type copolymer, PCPDTBT has been selected as the target material for investigation. The maximally oriented film showcased a DR of 4.1. Highly aligned polymer film was used as the active layer for the development of bottom gate bottom contact (BGBC) type OFETs. An average mobility and an Ion/Ioff of 0.002 cm2/Vs and 5 × 103 were obtained under dark conditions, respectively. Upon illumination with monochromatic green light (λ = 522 nm, Pin = 0.5 mW/cm2), the OPTs showcased a high photosensitivity and responsivity of 103 and 17 A/W, respectively. The obtained values were found to be superior over many of the previously reported similar OPTs which employed other organic polymers. The results thus are of crucial significance with respect to the development of facile, cost effective and highly sensitive single polymer thin film based OPTs.

    DOI: 10.1016/j.matpr.2021.03.468

    その他リンク: https://www.sciencedirect.com/science/article/pii/S2214785321025232?via%3Dihub

  • Fatigue life prediction of electroactive polymer strain sensor 査読有り

    Nitin Kumar Singh, Kazuto Takashima, Shyam Sudhir Pandey

    Electroactive Polymer Actuators and Devices (EAPAD) XXIII ( International Society for Optics and Photonics )   11587   115871Z(1) - 115871Z(7)   2021年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    USA   Sandiego, California   2021年03月22日  -  2021年03月27日

    Electroactive polymers strain sensors bear a great potentiality in the area of soft robotics, wearable devices, and fitness industries. A small initial defect present in such sensor may grow to a critical size during contraction and relaxation cycles leading to mechanical failure, therefore, prediction of fatigue life is inevitable. The crack growth approach is one of the amicable ways to estimate the fatigue life considering parameters like tear energy, crack geometry, and power law. In this work, crack growth approach based on power law is being proposed to predict fatigue life utilizing conducting and stretchable freestanding films consisted of SEBS rubber and dodecyl benzenesulfonic acid (DBSA) doped polyaniline composite. Utilizing this crack growth model for the prediction of fatigue life exhibited that such films can sustain more than a million cycles even at a large value of deformation.

    DOI: 10.1117/12.2584521

    その他リンク: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11587/115871Z/Fatigue-life-prediction-of-electroactive-polymer-strain-sensor/10.1117/12.2584521.short

  • PCPDTBT copolymer based high performance organic phototransistors utilizing improved chain alignment 査読有り 国際誌

    Nidhi Yadav, Nikita Kumari, Yoshito Ando, Shyam S Pandey, Vipul Singh

    Optical Materials ( Elsevier )   113   110886(1) - 110886(9)   2021年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    In this article, we report single component thin film based organic phototransistors (OPTs) developed using the novel ribbon-floating film transfer method (ribbon-FTM). A low band-gap copolymer, poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT) has been employed to develop the photoactive thin films of the devices. The fabricated polymer films were highly anisotropic in nature. To investigate the effect of film anisotropy on the device performance, organic field effect transistors (OFETs) were fabricated in two configurations namely, parallel and perpendicular, wherein the polymeric chains were oriented in line and orthogonal to the transistor channel direction, respectively. Notable differences in charge carrier mobility and device on-off ratios were observed among the two sets of devices. An on-off ratio of 4.1 × 103 and an average mobility of 0.001 cm2/V were observed in case of the perpendicular oriented OFETs which were increased to 105 and 0.003 cm2/V for the parallel oriented OFETs. A probe into the contact resistance at the respective metal/polymer interfaces of the devices was carried out using the modified transmission line method (MTLM). 4 times lower contact resistance was observed in the parallel OFET which was anticipated to be responsible for its superior performance. Further, the fabricated devices were illuminated with monochromatic red light (Pin = 0.4 mW/cm2) to observe their performance as phototransistors. Appreciable values of photosensitivity (2 × 104) and photoresponsivity (17.6 A/W) were obtained for the parallel OPTs which were found to be much higher than those of the previously reported thin film based OPTs employing other materials fabricated through conventional film coating techniques. The results presented in this report are of key significance towards the development of highly sensitive and cost-effective phototransistors which can be used in opto-sensing and imaging applications.

    DOI: 10.1016/j.optmat.2021.110886

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0925346721000872

  • Unravelling the bottleneck of phosphonic acid anchoring groups aiming toward enhancing the stability and efficiency of mesoscopic solar cells 査読有り 国際誌

    Vats A.K., Roy P., Tang L., Hayase S., Pandey S.S.

    Frontiers of Chemical Science and Engineering   16 ( 7 )   1060 - 1078   2021年01月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Novel near-infrared sensitizers with different anchoring groups aiming toward improved stability and efficiency of dye-sensitized solar cells were synthesized. Adsorption of these dyes on the mesoporous TiO2 surface revealed the dye adsorption rate of −CH=CH-COOH (SQ-139) > −CH=C(CN)COOH (SQ-140) > −PO3H2 (SQ-143) > −CH=C(CN)PO3H2 (SQ-148) > −CH=C(CN) PO3H-C2H5 (SQ-157) > −PO3H-C2H5 (SQ-151) > −CH=CH-COOH(−PO3H2) (SQ-162). The binding strength of these dyes on mesoporous TiO2 as investigated by dye desorption studies follows SQ-162 > SQ-143 > SQ-148 > SQ-139 ≫ SQ-157∼SQ-151 ≫ SQ-140 order. The acrylic acid anchoring group was demonstrated to be an optimum functional group owing to its fast dye adsorption rate and better binding strength on TiO2 along with good photoconversion efficiency. Results of dye binding on TiO2 surface demonstrated that SQ-162 bearing double anchoring groups of phosphonic and acrylic acid exhibited > 550 times stronger binding as compared to dye SQ-140 having cyanoacrylic acid anchoring group. SQ-140 exhibited the best photovoltaic performance with photon harvesting mainly in the far-red to near-infrared wavelength region having short circuit current density, open-circuit voltage and fill factor of 14.28 mA·cm−2, 0.64 V and 0.65, respectively, giving the power conversion efficiency of 5.95%. Thus, dye SQ-162 not only solved the problem of very poor efficiency of dye bearing only phosphonic acid while maintaining the extremely high binding strength opening the path for the design and development of novel near-infrared dyes with improved efficiency and stability by further increasing the π-conjugation. [Figure not available: see fulltext.]

    DOI: 10.1007/s11705-021-2117-z

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85120003882&origin=inward

  • Investigation of Orientation in the Thin Films of Conjngated Polymer and NIR Dye Blends Fabricated by Friction Transfer Method 査読有り 国際誌

    Kurokawa Y., Nagamatsu S., Pandey S.S.

    Proceedings of AM-FPD 2021 - 28th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials   96 - 99   2021年01月

     詳細を見る

    担当区分:最終著者, 責任著者   記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Improved film's crystalhmty and facile charge transport has been well demonstrated by onenting conjugated polymers using solution based thin film fabncation followed by thermal annealing, need for huge halogenated solvents and high temperate annealing are stfnnbling block for industnally viable large area thin film fabrication Herein, we report the fabncation of oriented thin films regioregularP3HT by solvent-free friction transfer (FT) technique and enhancement its further enhancement by adding MR sensitive squaraine dyes. Apart from assisting the molecular onentation of P3HT, it has been demonstrated that dye molecules are also get onented and a synergistic match between the alkyl chainsof the polymer and dyemolecule leads to promotionfor the extentofthe molecular onentation in the dye molecules.

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125790385&origin=inward

  • Solvent-Assisted Friction Transfer Method for Fabricating Large-Area Thin Films of Semiconducting Polymers with Edge-On Oriented Extended Backbones 査読有り

    Kumari N., Pandey M., Syafutra H., Nagamatsu S., Nakamura M., Pandey S.S.

    ACS Applied Materials and Interfaces   12 ( 49 )   55033 - 55043   2020年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © Recent past has witnessed huge scientific efforts aiming toward enhancing in-plane charge transport by unidirectional orientation of conjugated polymer (CP) backbones adopting various techniques. However, in most of the existing methods, excess amounts of toxic halogenated solvents and preaggregation in solution are inevitable, which are the main bottlenecks toward large-scale fabrication. Solvent-assisted friction transfer (SAFT) is being reported as a novel method and improvisation over conventional friction transfer to expand its versatility. In this method, application of a small amount of the solvent (∼3 μL) during drawing not only leads to the entirely changed film morphology and molecular orientation but also addresses the existing substrate compatibility issues. Utilizing poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]-thiophene] as a representative CP under SAFT technique, films with extended backbone and edge-on orientation was successfully fabricated, which was confirmed by various characterization tools such as X-ray diffraction, polarized absorption, and polarized Raman spectroscopies. Further, anisotropic charge transport in these films was investigated by fabricating organic field-effect transistors and the role of contact resistance was also studied. Slight solvent use, compatibility with various substrates, and film fabrication with controlled orientation, and after validation of its generality on different CPs, SAFT can be expected to open new avenues in the area of printed electronics.

    DOI: 10.1021/acsami.0c14874

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85097812392&origin=inward

  • Comprehensive performance analysis of dye-sensitized solar cells using single layer TiO<inf>2</inf> photoanode deposited using screen printing technique 査読有り

    Khalifa A., Shafie S., Hasan W.Z.W., Lim H.N., Rusop M., Pandey S.S., Vats A.K., AlSultan H.A., Samaila B.

    Optik   223   2020年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020 Elsevier GmbH A single-layer N719 sensitized nanocrystalline TiO2 films have been successfully deposited on FTO-coated glass substrates using the screen-printing technique with four different thicknesses (10, 12, 14 and 18 μm) and used as simple and low cost photoanodes for dye-sensitized solar cells (DSSCs). The thickness was controlled by adjusting the distance between the screen-printing mesh and the FTO-coated substrate using the two height control bolts. The films were deposited using one-time screen-printing method. So that the multiple screen-printing and annealing cycles can be reduced. Furthermore, the cell fabrication time was reduced as well as the problem of recombination at the interfacial layers between the TiO2 films was avoided. The thickness of the TiO2 films was measured by the surface profilometer. The prepared photoanode samples were characterized using FESEM, EDX, AFM, and UV–vis-NIR spectroscopies. The ruthenium dye soaking time was optimized at 48 h. The photovoltaic parameters such as short circuit current density (Isc), open-circuit voltage (Voc), fill factor (FF) and power conversion efficiency (η) were measured for fabricated cells at room temperature under one sunlight 100 mW/cm2 illumination using the solar simulator. The effect of TiO2 film thickness on the fabricated DSSCs performance parameters was studied. DSSC devices with average thickness 12μm achieved the highest conversion efficiency of 5.13 % with Jsc = 12.12 mA/cm2, and Voc = 0.69 V. The obtained results revealed that the amount of the adsorbed dye increases with the increase in the TiO2 film thickness and thus improve photogenerated current. However, exceeding the optimum photoanode thickness results in decline in the photogenerated current and the overall efficiency due to back electrons recombination and the lower photoanode transmittance.

    DOI: 10.1016/j.ijleo.2020.165595

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85091226691&origin=inward

  • Ordered arrangement of F4TCNQ anions in three-dimensionally oriented P3HT thin films 査読有り

    Nagamatsu S., Pandey S.S.

    Scientific Reports   10 ( 1 )   2020年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020, The Author(s). An ordered arrangement of electron-accepting molecular dopant, 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), in three-dimensionally (3D) oriented poly(3-hexylthiophene) (P3HT) film was clarified. The 3D oriented P3HT thin films prepared by the friction-transfer technique were doped with F4TCNQ by dipping into an acetonitrile solution. The presence of F4TCNQ anions in the 3D oriented P3HT thin films was investigated by polarized ultraviolet/visible/near-infrared absorption spectroscopy, grazing incidence X-ray diffractometry, polarized Fourier transform infrared spectroscopy (FT-IR), and infrared p-polarized multiple-angle incidence resolution spectroscopy (pMAIRS). The F4TCNQ-doped 3D oriented P3HT films showed anisotropic properties in all characterizations. In particular, the anisotropic molecular vibrations from polarized FT-IR and pMAIRS have clearly revealed orientations of polymeric chains and molecular dopant molecules. Considering the results from several independent techniques indicated that F4TCNQ anions in the 3D oriented P3HT were orderly arranged in a 3D manner with respect to the 3D oriented P3HT such that their molecular long-axis parallel to the P3HT backbone, with in-plane molecular orientation. Additionally, the direction of the optical transition moment of the F4TCNQ anion was found to be parallel to the molecular short-axis.

    DOI: 10.1038/s41598-020-77022-0

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85096179925&origin=inward

  • Effect of electrolyte for back contact transparent conducting oxide-less dye-sensitized solar cells: Iodine versus cobalt 査読有り

    Molla M.Z., Baranwal A.K., Hayase S., Pandey S.S.

    Journal of Photonics for Energy   10 ( 4 )   2020年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). Grätzel solar cells are reported in a transparent conducting oxide-less (TCO-less) back-contact dye-sensitized solar cell (BC-DSC) architecture using a stainless steel mesh-protected working electrode along with nanoporous TiO2 semiconductor and metal-free D205 dye. Liquid electrolytes play a significant role for the dye regeneration in the working operation of TCO-less BC-DSCs; therefore, we report the effectiveness of two different commonly utilized electrolytes (iodine-and cobalt-based redox shuttles) for the construction and performance of TCO-less dye-sensitized solar cells (DSCs). Differential performance of DSCs thus fabricated was interpreted utilizing impedance spectral and lifetime analysis. It was found that although utilization of cobalt bipyridyl complex-based electrolyte was able to harvest higher photons in the lower wavelength region (330 to 430 nm) as compared to its iodine electrolyte counterparts, hampered dye regeneration due to reduced driving force and slower ion diffusion in combination with higher charge transport resistance at TiO2 / dye / electrolyte was responsible for relatively hampered photovoltaic performance at peak absorption.

    DOI: 10.1117/1.JPE.10.045501

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85098660697&origin=inward

  • Boosting the Efficiency of Low-Cost T-C-O-Less Dye-Sensitized Solar Cells Employing Nanoparticle Spacers and Cobalt Complex Redox Shuttle 査読有り

    Molla M.Z., Baranwal A.K., Hayase S., Pandey S.S.

    ACS Applied Electronic Materials   2 ( 9 )   2721 - 2729   2020年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020 American Chemical Society. A strategy has been explored to enhance the diffusion of Co2+/3+ species through the dye-stained nanoparticle spacer employed as an electrolyte absorbing layer with different nanoparticle sizes of TiO2 (30 and 20 nm) and ZrO2 (15 nm) films in transparent conducting oxide-less back-contact dye-sensitized solar cells (T-C-O-less B-C-DSCs). A dye-stained nanoparticle spacer with a relatively larger particle of the TiO2 (30 nm) film brought about easy diffusion of cobalt(II/III) complexes leading to an enhanced photoconversion efficiency (PCE) of 6.55% as compared to relatively smaller nanoparticle of the TiO2 (20 nm) film (4.95%) and ZrO2 (15 nm) film (2.03%). The T-C-O-less B-C-DSC exhibits a lower PCE of 6.55% relative to the T-C-O-based DSC (9.10%) owing to relatively hampered diffusivity of [Co(bpy)3]3+/2+ complexes through perforated holes of the SS-mesh as well as the nanoparticle spacer. A differential study reveals that the cobalt electrolyte exhibits much improved light accumulation in the range 330-430 nm relative to the iodine electrolyte counterpart. The corrosion study of the SS-mesh and Ti-protected SS-mesh reveals that stable T-C-O-less B-C-DSCs can be attained only by the cobalt electrolyte because of its mild nature toward the SS-mesh and Ti metal as compared to the iodine electrolyte.

    DOI: 10.1021/acsaelm.0c00437

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85093662281&origin=inward

  • Parametric optimization of back-contact T-C-O-free dye-sensitized solar cells employing indoline and porphyrin sensitizer based on cobalt redox electrolyte 査読有り

    Molla M.Z., Baranwal A.K., Kapil G., Hayase S., Pandey S.S.

    Solar Energy   208   411 - 418   2020年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020 International Solar Energy Society Transparent-conductive-oxide-free (T-C-O-free) back-contact (B-C) dye-sensitized solar cell (DSC) utilizing flexible Stainless Steel (SS) mesh (SS-mesh) supported with mesoporous TiO2 as a photoanode employing cobalt electrolyte is being presented. A thin layer of Ti metal over the SS-mesh was ascertained to be essential to retard the back electron reaction, which was confirmed by the dark current measurements. The interfacial contact between the SS-mesh and nanoporous (NP) TiO2 of the photoanode of T-C-O-free B-C-DSC was driven to influence the photovoltaic performance greatly. It was confirmed by electrochemical impedance analysis that NP TiO2 of 30 nm exhibited less charge transfer impedance observed at TiO2-dye-electrolyte interface as compared to TiO2 of having particle size of 15–20 nm. T-C-O-free B-C-DSC employing dye mixer combination of indoline dyes D-131 and D-205 (1:1) with relatively larger NP of TiO2 (30 nm) as compared to TiO2 of 15–20 nm exhibited enhanced photoconversion efficiency (PCE) of 4.02%. To increase the PCE even further, T-C-O-free B-C-DSC with cobalt based electrolyte sensitized with porphyrin (YD2-o-C8)-dye bearing a larger optical window was investigated. An optimized 10 µm thickness of the TiO2 layer was found to be optimum leading to an enhanced PCE of 5.26%.

    DOI: 10.1016/j.solener.2020.08.011

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85089284802&origin=inward

  • Reduced contact resistance in organic field-effect transistors fabricated using floating film transfer method 査読有り

    Bhargava K., Yadav N., Kumari N., Pandey S.S., Singh V.

    Journal of Materials Science: Materials in Electronics   31 ( 18 )   15277 - 15285   2020年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020, Springer Science+Business Media, LLC, part of Springer Nature. This paper presents an in-depth performance-based comparison of organic field-effect transistors (OFETs) prepared using the conventional spin coating (SC) technique and a recently developed floating film transfer method (FTM). A remarkable improvement in the performance of transistors fabricated using FTM was achieved in comparison to their SC counterparts. The estimated value of width-normalized contact resistance in FTM-based OFETs was an order lower in comparison to that of transistors prepared using SC technique. The observed results were credited to a significant enhancement in the length of π-conjugation due to the presence of edge-on oriented polymer chains of active layer deposited using FTM, leading to the lowering of carrier injection barrier at the Au/P3HT interface. These results were well supported through absorption, photoluminescence and Raman measurements as well as the anisotropy measurements using polarized absorption spectra, which also pointed towards the improvement in the polymer chain alignment of thin films prepared by FTM over that prepared by the conventional SC technique. The results indicate thin film morphology as a key towards reducing the contact resistance in OFETs.

    DOI: 10.1007/s10854-020-04092-1

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85088832357&origin=inward

  • Stability Improvement of Perovskite Solar Cells by Adding Sb-Xanthate to Precursor Solution 査読有り

    Nam K.S., Krishnamurthy S., Qing S., Toyoda T., Yoshino K., Minemoto T., Ma T., Pandey S., Hayase S.

    Physica Status Solidi (A) Applications and Materials Science   217 ( 18 )   2020年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020 Wiley-VCH GmbH Herein, it is reported that the stability of a halogenated perovskite (PVK) solar cell consisting of an fluorine-doped tin oxide (FTO) substrate/TiO2/CH3NH3PbI3/N2,N2,N2′,N2′,N7,N7,N7′,N7′-octakis(4-methoxyphenyl)-9,9′-spirobi[9H-fluorene]-2,2′,7,7′-tetramine/Ag/Au structure is improved by adding Sb-xanthate to the PVK layer without large loss of efficiency. The Sb-element-rich layer is observed on top of the PVK layer. From the X-ray photoelectron spectroscopy (XPS) study, it is concluded that an inorganic SbxOy passivation layer on the PVK layer is prepared by baking the solution of the Sb-xanthate and the PVK precursor. The inorganic layer prevents moisture and oxygen from penetrating into the PVK layer. This article provides a new method to obtain a passivation layer on a PVK layer by baking a mixture solution in one step for improving solar cell stability.

    DOI: 10.1002/pssa.202000144

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85088814389&origin=inward

  • Orientation of Semiconducting Polymers via Swift Printing and Drawing Techniques for High Performance Organic Electronic Devices 査読有り

    Kumari N., Sharma S., Nagamatsu S., Pandey S.S.

    Proceedings of AM-FPD 2020 - 27th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials   67 - 70   2020年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    © 2020 FTFMD. Recent developments in the field of organic electronics are being triggered by various approaches aiming towards enhancing the charge transport in thin-films of processable organic semiconductors such as novel molecular design, synthesis and increasing their crystallinity and molecular orientation adopting various thin film fabrication techniques. However, intriguing challenges associated with serious health and environment hazards due to inevitable use of halogenated solvents are needed to be addressed amicably before the practical realization of organic electronic devices. In order to address this issue, thin film fabrication techniques like floating-film transfer and friction transfer have been utilized to demonstrate environment friendly and sustainable fabrication of large area thin-films possessing adequate uniformity without comprising the facile charge transport. Organic field effect transistors were fabricated using different regions of the large-area thin films (≥ 10 cm2) and by optimizing casting conditions, uniformity in the field effect mobility (μ) was demonstrated. Besides this, as compared to most commonly used spin coating, one order of magnitude enhancement in the μ was successfully achieved utilizing oriented thin films fabricated by our methods.

    DOI: 10.23919/AM-FPD49417.2020.9224472

    Kyutacar

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85096971870&origin=inward

  • Comparative analysis of metal diffusion effects in polymer films coated with spin coating and floating film transfer techniques 査読有り

    Yadav N., Bhargava K., Kumari N., Pandey S.S., Singh V.

    Synthetic Metals   264   2020年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2020 Elsevier B.V. In this work a comparative analysis between the extent of gold diffusion of the top coated gold layer into the conducting polymer matrix of spin coated polymer films and polymer films coated via floating film transfer method (FTM) has been investigated. For the sake of comparison two different device configurations i.e. ITO/rr-P3HT (spin coated)/Au and ITO/rr-P3HT (spin coated)/rr-P3HT (FTM coated)/Au have been compared. The J-V characteristics of these devices revealed a non-Ohmic injection occurring near the top gold electrode/polymer interface. Furthermore, the current flowing through the device consisting of FTM layer/Au interface was observed to be lower as compared to the one consisting of spin coated layer/Au interface, indicating higher gold diffusion in well-ordered FTM thin films. These observations have been validated by optical and structural characterization methods viz. absorption, photoluminescence, Raman spectroscopy and X-Ray Diffraction (XRD) measurement. Finally Fowler-Nordheim (FN) tunneling currents were studied under high electric field applications for the two devices which confirmed presence of higher barrier at the interface of gold and FTM coated polymer film.

    DOI: 10.1016/j.synthmet.2020.116378

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85083326550&origin=inward

  • Synthesis, Photophysical characterization and dye adsorption behavior in unsymmetrical squaraine dyes with varying anchoring groups 査読有り

    Ajendra Kumar Vats, Anusha Pradhan, Shuzi, Hayase, Shyam S. Pandey

    Journal of Photochemistry and Photobiology A: Chemistry ( Elsevier )   394   112467(1) - 112467(12)   2020年03月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Four newly designed unsymmetrical squaraine dyes bearing different functional groups for their anchoring on the surface of mesoporous TiO2 were successfully synthesized aiming towards development of far-red sensitizers for dye-sensitized solar cells (DSSCs). The synthesized dyes were characterized by 1H NMR, fast ion bombardment mass, and subjected to photophysical investigations by electronic absorption/fluorescence emission spectroscopy and cyclic voltammetry. These dyes exhibited excellent solubility in a number of common organic solvents. Adsorption behavior of these dyes on the thin films of mesoporous TiO2 was investigated in detail and results indicated that rate of dye adsorption follows the order −COOH>-PO3H2>OH > SO3H. At the same time, dye desorption studies demonstrated that stability of adsorbed dyes on the mesoporous TiO2 follows the order -PO3H2>>OH>−COOH > –SO3H. Further, implication of the nature of anchoring groups of dye molecules upon the energy levels of their highest occupied molecular orbital and lowest unoccupied molecular orbital was evaluated by both of the combined theoretical and experimental approaches. In spite of enhanced dye loading, very high binding strength and favorable energetic cascade, SQ-143 bearing Phosphonic acid exhibited hampered photovoltaic performance as compared to that of SQ-138 with carboxylic acid anchoring group. Amongst various sensitizers used for present investigation, SQ-138 exhibited best photovoltaic performance having short-circuit current density, open circuit voltage and fill factor of 12.49 mA/cm2, 0.60 V, and 0.53, respectively, leading to power conversion efficiency of 4.07 % after simulated solar irradiation.

    DOI: 10.1016/j.jphotochem.2020.112467

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S1010603020302665

  • Molecular Orientation and Anisotropic Charge Transport in the Large Area Thin Films of Regioregular Poly (3-alkylthiopnes) Fabricated by Ribbon-Shaped FTM 査読有り

    Atul SM Tripathi, Rakesh Kumar Gupta, Shubham Sharma, Shuichi Nagamatsu, Shyam S Pandey

    Organic Electronics ( Elsevier )   81   105683(1) - 105683(9)   2020年03月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Introduction of alkyl chains is a plausible approach to impart the facile solution processability in regioregular (poly-3-alkylthiophenes) (RR-P3ATS) but drastic fall in the conductivity as a function of increasing alkyl chain length restricted the versatile use of its hexyl substituted derivative (P3HT). In this work, fabrication of large area oriented thin films of RR-P3ATs with varying alkyl chain lengths was successfully demonstrated using ribbon shaped floating film transfer method (FTM). Observed decrease in the molecular orientation with increasing alkyl chain length was explained by enhanced alkyl chain inter-digitation as evidenced by trends of d-spacing estimated from the out-of-plane XRD results. In-plane GIXD revealed edge-on orientation in the thin films of all of the P3ATs prepared by ribbon-shaped FTM, which is highly desired for planer charge carrier transport. Parallel oriented thin film of longest alkyl chain (octadecyl) substituted P3AT poly (3-octadecylthiophene) exhibited a field effect transistor (FET) mobility of 1.9 × 10−2 cm2/V, which is about 4–5 orders of magnitude higher as compared its previously reported values estimated by time-of-flight and FET methods. Thus, fabrication of thin films by FTM leads to versatile choice of RR-P3ATs for solution processing for FETs using common organic solvents without having any detrimental impact of alkyl chain length on the charge carrier mobility.

    DOI: 10.1016/j.orgel.2020.105687

    その他リンク: https://www.sciencedirect.com/science/article/pii/S1566119920300732

  • Investigation and control of charge transport anisotropy in highly oriented friction transferred polythiophene thin films 査読有り

    Nikita Kumari, Manish Pandey, Shuichi Nagamatsu, Masakazu Nakamura, Shyam Sudhir Pandey

    ACS Applied Materials & Interfaces ( American Chemical Society )   12 ( 10 )   11876 - 11883   2020年02月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Highly oriented thin films of poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT) were prepared by friction-transfer technique followed by their characterization using polarized absorption spectroscopy, angle-dependent polarized Raman spectroscopy, and X-ray diffraction (XRD) techniques. Orientation in high-molecular-weight (MW) polymers is hampered by chain folding or entanglements, which limit their macromolecular orientation. Interestingly, utilizing high-molecular-weight PBTTT (MW > 50 kDa) and friction-transfer technique, successful fabrication of highly oriented thin films with very high dichroic ratio (∼30) was demonstrated. The role of the substrate’s surface energy and its impact on the field-effect mobility (μ) of the oriented thin films were comprehensively investigated. The influence of annealing the thin films as prepared on the bare and self-assembled monolayer (SAM)-treated SiO2 surfaces exhibiting differential trends of μ was systematically investigated. This was explained by partial and complete conformational transformation of macromolecules on bare and SAM-treated SiO2 surfaces, respectively, after annealing them beyond liquid crystalline phase transition temperature, as revealed by in-plane and out-of-plane XRD results. On bare SiO2, optimum μ up to 0.03 cm2 V–1 s–1 along the backbone orientation was obtained for the thin films annealed to 120 °C; whereas, it reached up to 0.36 cm2 V–1 s–1 on SAM-treated SiO2 after annealing at 200 °C. Finally, a charge transport mechanism was proposed taking evidence from the anisotropic optical and electrical characteristics of the friction-transferred PBTTT films into consideration.

    DOI: 10.1021/acsami.9b23345

    Kyutacar

    その他リンク: https://pubs.acs.org/doi/abs/10.1021/acsami.9b23345

  • 2D positional mapping of casting condition driven microstructural distribution in organic thin films 査読有り

    Kumari N., Pandey M., Nagamatsu S., Pandey S.S.

    Japanese Journal of Applied Physics   59 ( SC )   2020年02月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2019 The Japan Society of Applied Physics. Fabrication of large-area thin films and their swift characterization is highly desired for the commercial aspects of the organic electronic devices. Although a number of techniques have been proposed for the large-area thin film fabrication, the microstructural variation is still an issue. In this work, the facile characterization of distribution in thickness and macromolecular ordering in the drop-casted and spin-coated poly(3-hexylthiophene) thin films have been performed through newly developed 2D positional mapping technique. Through this technique, a comparative analysis of the absorption spectra in terms of peak absorbance and excitonic bandwidth (W) was performed for the whole sample, the lower value of W observed for the drop-casted thin film depicts its molecular ordering. Moreover, the difference in W (≈ 10 meV) was noticed between two points (≈1 mm apart) on the drop-casted film, which corresponds to the difference in microstructural ordering and it is complicated to characterize through the conventional spectroscopic techniques.

    DOI: 10.7567/1347-4065/ab48b9

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85081971479&origin=inward

  • 2D positional mapping of casting condition driven microstructural distribution in organic thin films 査読有り

    Nikita Kumari, Manish Pandey, Shuichi Nagamatsu, Shyam S Pandey

    Japanese Journal of Applied Physics ( IOP Science )   69 ( SC )   SCCA06-1 - SCCA06-6   2019年11月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Fabrication of large-area thin films and their swift characterization is highly desired for the commercial aspects of the organic electronic devices. Although a number of techniques have been proposed for the large-area thin film fabrication, the microstructural variation is still an issue. In this work, the facile characterization of distribution in thickness and macromolecular ordering in the drop-casted and spin-coated poly(3-hexylthiophene) thin films have been performed through newly developed 2D positional mapping technique. Through this technique, a comparative analysis of the absorption spectra in terms of peak absorbance and excitonic bandwidth (W) was performed for the whole sample, the lower value of W observed for the drop-casted thin film depicts its molecular ordering. Moreover, the difference in W (≈ 10 meV) was noticed between two points (≈1 mm apart) on the drop-casted film, which corresponds to the difference in microstructural ordering and it is complicated to characterize through the conventional spectroscopic techniques.

    Kyutacar

    その他リンク: https://iopscience.iop.org/article/10.7567/1347-4065/ab48b9/meta

  • P3HT Nanofibrils Thin-Film Transistors by Adsorbing Deposition in Suspension 査読有り

    Shuichi Nagamatsu, Masataka Ishida, Shougo Miyajima, Shyam S Pandey

    Materials ( MDPI )   12 ( 21 )   3643   2019年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    A novel film preparation method utilizing polymer suspension, entitled adsorbing deposition in suspensions (ADS), has been proposed. The poly(3-hexylthiophene) (P3HT) toluene solution forms P3HT nanofibrils dispersed suspension by aging. P3HT nanofibrils are highly crystallized with sharp vibronic absorption spectra. By the ADS method, only P3HT nanofibrils in suspension can be deposited on the substrate surface without any disordered fraction from the dissolved P3HT in suspension. Formed ADS film contains only the nanostructured conjugated polymer. Fabricated polymer thin-film transistor (TFT) utilizing ADS P3HT film shows good TFT performances with low off current, narrow subthreshold swing and large on/off current ratio

    DOI: 10.3390/ma12213643

    その他リンク: https://www.mdpi.com/1996-1944/12/21/3643

  • Clitoria ternatea flower as natural dyes for Dye-sensitized solar cells 査読有り

    Azwar Hayat, A Erwin E Putra, Novriany Amaliyah, Shyam S Pandey

    IOP Conference Series: Materials Science and Engineering ( IOP Science )   619 ( 1 )   012049-1 - 012049-6   2019年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Clitoria ternatea flowers have been investigated as a natural sensitizer in Dye-sensitized solar cell (DSSC). Dried C. ternatea flowers ware immersed in ethanol for 48 hours in dark room to obtain anthocyanin pigments. We compared the photovoltaic performance of the sensitizers with Titanium dioxide (TiO2) only and TiO2 with scattering layers. C. ternatea dyes have higher Power Conversion Efficiency (PCE) when applied in TiO2 with scattering layers compared to standard TiO2 semiconductors. Scattering layer (SL) has increased the light path inside the photo-anode film that doubled the short-circuit current (Jsc) and enhanced the open circuit voltage (Voc) compared to TiO2 based cell without the SL. In conclusion, from the result, higher electron injections can be achieved by light management on photo-anode film with scattering layers as one of strategy to enhance the efficiency for further low cost and environment-friendly solar cell.

    Kyutacar

    その他リンク: https://iopscience.iop.org/article/10.1088/1757-899X/619/1/012049/meta

  • Role of device architecture and AlOX interlayer in organic Schottky diodes and their interpretation by analytical modeling 査読有り

    Nikita Kumari, Manish Pandey, Kengo Hamada, Daisuke Hirotani, Shuichi Nagamatsu, Shuzi Hayase, Shyam S Pandey

    Journal of Applied Physics ( American Institute of Physics )   126   125501-1 - 125501-12   2019年09月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Considering the pivotal role of interfaces in controlling the performance of organic electronic devices, implications of metal/organic interfacial quality in a Schottky barrier diode (SBD) are investigated. The nature of metal/organic interfaces and the thin film quality of regioregular poly (3-hexylthiophene) based SBDs fabricated in different device architectures are investigated using experimental and theoretical modeling. The importance of oxidized aluminum nanostructures as an interlayer at the Schottky interface for the dramatic enhancement of the rectification ratio (>106 at ±5 V) has been demonstrated, which is attributed to suppressed leakage current due to the oxide layer and the formation of a charge double layer. Furthermore, electrical performances of all the SBDs were modeled in terms of an underlying particular phenomenon solely or with the combination of multiple physical phenomena. The combined modeling equation used in this work fits well for the different device architectures, which validates its generality in order to extract the device parameters

    DOI: 10.1063/1.5109083

    その他リンク: https://aip.scitation.org/doi/full/10.1063/1.5109083

  • Recent advances in the orientation of conjugated polymers for organic field-effect transistors 査読有り

    Manish Pandey, Nikita Kumari, Shuichi Nagamatsu, Shyam S Pandey

    Journal of Materials Chemistry C, ( Royal Society of Chemistry )   7   13323 - 13351   2019年09月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Solution processable conjugated polymers (CPs) possess unique molecular structures in terms of extended π-conjugation in combination with quasi 1-dimensionality, imparting them with an inherent tendency for molecular self-assembly and ultimately determining their optoelectronic properties. Short-range molecular ordering and long-range macroscopic orientation are two different but interdependent phenomena, which should be optimized depending on the nature of electronic devices (planar versus vertical). Judicious control of the macromolecular orientations and conformation-assisted morphologies of CPs are key for determining and controlling the anisotropic charge transport in organic field effect transistors (OFETs). The present review focuses on different solution-based approaches for thin film fabrication developed in the last two decades aimed towards controlling the film morphologies and macroscopic

    DOI: 10.1039/C9TC04397G

    Kyutacar

    その他リンク: https://pubs.rsc.org/no/content/articlelanding/2019/tc/c9tc04397g/unauth#!divAbstract

  • Implication of Molecular Weight on Optical and Charge Transport Anisotropy in PQT-C12 Films Fabricated by Dynamic FTM 査読有り

    Atul SM Tripathi, Shifumi Sadakata, Rakesh Kumar Gupta, Shuichi Nagamatsu, Yoshito Ando, Shyam S Pandey

    ACS Applied Materials and Interfaces ( The American Chemical Society )   11 ( 31 )   28088 - 28095   2019年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Large area (>20 cm × 2 cm)-oriented thin films of PQT-C12 with varying molecular weight and polydispersity index (PDI) were fabricated by the ribbon-shaped floating film transfer method aiming toward their application as an active semiconductor element of organic field effect transistors (OFETs). Investigation on the influence of the molecular weight and PDI upon the extent of molecular alignment and anisotropic charge transport was systematically carried out. It has been demonstrated that high molecular weight in combination with low PDI not only leads to a very high optical anisotropy >10 but also high charge carrier anisotropy with a hole mobility of about 0.07 cm2/V·s for OFETs using parallel-oriented PQT-C12 thin films. Such a structure–property correlation is highly beneficial for the development of high performance organic electronic devices by synergistic and amicable tuning of the optoelectronic anisotropies and polymer synthetic variables.

    Kyutacar

    その他リンク: https://doi.org/10.1021/acsami.9b06568

  • Wide wavelength photon harvesting in dye-sensitized solar cells utilizing cobalt complex redox electrolyte: Implication of surface passivation 査読有り

    Anusha Pradhan, Maryala Saikiran, Gaurav Kapil ,Shuzi Hayase, Shyam S. Pandey

    Solar Energy Materials and Solar Cells ( Elsevier )   195   122 - 133   2019年03月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    A combination of near infra-red (NIR) photon harvesting and cobalt electrolytes having deeper redox energy level are needed for the fabrication of high efficiency dye-sensitized solar cells (DSSCs). A logical molecular design of unsymmetrical squaraine dye (SQ-110) as a representative of NIR dyes has been demonstrated to function well in DSSC using cobalt complex redox electrolyte. Problem of mass transport limitations due to the bulky cobalt complex ions leading to relatively enhanced charge recombination was amicably solved by single as well as multiple compact metal oxide surface passivation on both of the transparent conducting oxide substrate as well as mesoporous TiO2. Complete absence of light absorption beyond 550 nm wavelength region by D-35 and utilization of a complementary light harvesting dye SQ-110 led to efficient wide wavelength photon harvesting. DSSC fabricated using a dye cocktail of D-35 and SQ-110 in 4:1 ratio resulted in to photoconversion efficiency (PCE) of 7.2%, which is much higher as compared to the constituent individual sensitizers D-35 (3.6%) and SQ-110 (1.9%). This synergistic enhancement in PCE by dye cocktail was associated with the mutual co-operation of respective dyes in terms controlling the dye aggregation and complementary photon harvesting. In this dye cocktail system, D-35 is involved in the prevention of dye aggregation, lower wavelength photon harvesting and energy transfer induced photocurrent enhancement.

    DOI: 10.1016/j.solmat.2019.03.013

    Kyutacar

  • Optoelectrical anisotropy in graphene oxide supported polythiophene thin films fabricated by floating film transfer 査読有り

    Rajiv K Pandey, Atul SM Tripathi, Shyam S Pandey, Rajiv Prakash

    Carbon ( Elsevier )   147   252 - 261   2019年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    A facile method for the fabrication of highly oriented hybrid thin films of conjugated polymer (CP) with graphene oxide (GO) as 2D nano-filler over the high surface tension liquid substrate by floating film transfer is being reported. Formation of the self-assembled oriented hybrid thin film has been validated using multiple characterization techniques. Hybrid thin films thus prepared have been used for the fabrication of organic field effect transistors (OFETs) followed by investigation of anisotropic charge carrier transport. OFETs made with hybrid films oriented in channel direction exhibited the superior device performance with >6 fold augmentation in field effect mobility (μ) and one order improvement in on/off ratio as compared to that of devices based on pristine CP. However, pristine polymer shows 2.2 fold enhancement in mobility and one order augmentation in on/off ratio in parallel orientation as compared to the corresponding perpendicularly oriented films. Thus, our study has elucidated a path to obtain oriented, aligned, and self - assembled hybrid films for further improvement in the device performance aiming towards the applications in organic electronics.

    DOI: 10.1016/j.carbon.2019.02.086

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0008622319302179

  • Passivation of Grain Boundary by Squaraine Zwitterions for Defect Passivation and Efficient Perovskite Solar Cells 査読有り

    Zhen Wang, Anusha Pradhan, Muhammad Akmal kamarudin, Manish Pandey, Shyam S Pandey, Putao Zhang, Chi huey Ng, Atul SM Tripathi, Tingli Ma, Shuzi Hayase

    ACS Applied Materials and Interfaces ( The American Chemical Society )   11 ( 10 )   10012 - 10020   2019年02月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Unavoidable defects in grain boundaries (GBs) are detrimental and critically influence the organometal halide perovskite performance and stability. To address this issue, semiconducting molecules have been employed to passivate traps along perovskite GBs. Here, we designed and synthesized three squaraine molecules (SQ) with zwitterionic structure to interact with under-coordinated Pb2+ and passivate Pb–I antisite defects. Density functional theory calculation shows symmetric O atoms could coordinate with perovskite grains simultaneously, resulting in continuous charge distribution at the SQ–perovskite interface. The energetic traps distribution in CH3NH3PbI3 perovskite is influenced significantly by the interaction between SQ and perovskite as analyzed by thermally stimulated current, in which the deep-level defects are considerably reduced due to efficient SQ passivation. In addition, we explore how SQ …

    DOI: 10.1021/acsami.8b22044

    その他リンク: https://pubs.acs.org/doi/abs/10.1021/acsami.8b22044

  • 2D positional profiling of orientation and thickness uniformity in the semiconducting polymers thin films 査読有り

    Nikita Kumari, Atul SM Tripathi, Shifumi Sadakata, Manish Pandey, Shuichi Nagamatsu, Shuzi Hayase, Shyam S Pandey

    Organic Electronics ( Elsevier )   68   221 - 229   2019年02月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Harnessing the full potential of solution processable conjugated polymers (CPs) as active semiconductor elements lies in the facile thin film fabrication along with amicable control of molecular self-assembly and orientation. Probing the nature and uniformity of thin films are inevitable for fabrication of devices with high reproducibility. Herein, a new method for the fast and facile profiling of thickness and molecular orientation of large area thin films is being reported. Thin films of PBTTT-C14 fabricated by three different methods like floating film transfer method (FTM), friction transfer and spin coating were subjected to profiling of thickness and molecular orientation using 2D positional mapping system followed by fabrication of organic thin film transistors. In order to prove applicability of the mapping system on other CPs, oriented films of PQT-C12 were also prepared by FTM and optical anisotropy estimated by the mapping system (23.0) and conventional spectrophotometer (22.4) validates the performance of our positional mapping system. Spin-coated thin films of PBTTT-C14 subjected to positional profiling of the film uniformity revealed that films are non-uniform and there was a gradual increase in the thickness from center to the periphery.

    DOI: 10.1016/j.orgel.2019.02.011

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S1566119919300746

  • Back-illuminated dye-sensitized solar cell flexible photoanode on titanium foil 査読有り

    Shaban S., Shafie S., Pandey S.S., Lokman M.Q., Ahmad F., Hamidon M.N., Sharif N.F.M.

    ASM Science Journal   12 ( SpecialIssue4 )   29 - 35   2019年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2019, Akademi Sains Malaysia. This paper reports the preparation and performance analysis on dye-sensitized solar cells (DSSC) using titanium (Ti) foil as flexible photoanode for back-illuminated measurement. Performance differences were also carried with the fluorine-doped tin oxide (FTO) glass photoanode using the back and front-illuminated technique. The hydrogen peroxide (H2O2) treated Ti foil surface was applied and the doctor blade method was used for deposition on photoanode during the process of fabrication. Surface morphology of the treated Ti Foil with H2O2 shows the formation of TiO2 nanostructure which results in significant attachment of TiO2 layer on Ti Foil. The results on measurement show that the fabricated flexible photoanode DSSC has an efficiency of power conversion at 1.00% under 1.5 A. M solar radiation by using back-illuminated while DSSC with solid-state glass photoanode has an efficiency power conversion at 0.53% (back-illuminated) and 2.22% (front-illuminated). However, the flexible photoanode DSSC has better power conversion efficiency than the solid-state glass photoanode DSSC under the condition of back-illumination. It is lower in result comparatively with front illumination DSSC due to the coated of platinum at the counter electrode that reflects light partially, while electrolyte iodine absorbs some photons and effects on DSSC performance.

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85084484893&origin=inward

  • Synthesis, characterizations and photo-physical properties of novel lanthanum (III) complexes 査読有り

    Iffat Ameen, Abhishek Kumar Tripathi, Afshan Siddiqui, Gaurav Kapil, Shyam S Pandey, Umesh Nath Tripathi

    Journal of Taibah University for Science   12 ( 6 )   796 - 808   2018年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    A series of novel complexes of La(III) with substituted pyrazolines and mixed ligand complexes with these pyrazolines and thio-ligands have been synthesized and characterized by elemental analysis, molecular weight measurement, Fourier transform infra-red, 1H and 13C NMR spectroscopy. The particle/crystallite sizes were confirmed by powder X-ray diffraction, scanning electron microscopy and transmission electron microscopic techniques. Optical characterizations have been performed by electronic absorption and fluorescence emission spectroscopies in order to investigate their luminescence behaviour, which reveals fairly good quantum yield and fluorescence life time for some of the complexes. Thermal analyses such as thermogravimetric and differential thermal analysis indicate that these complexes are thermally stable at high temperature. Investigations pertaining to solid-state optical absorption spectra and photoelectron yield spectroscopy reveal that upon thermal annealing beyond 300°C, these compounds form dark-brown to black semiconducting materials with an optical band gap between 1.9 and 2.3 eV.

    DOI: 10.1080/16583655.2018.1516028

    その他リンク: https://www.tandfonline.com/doi/abs/10.1080/16583655.2018.1516028

  • Facile fabrication of large area oriented conjugated polymer films by ribbon-shaped FTM and its implication on anisotropic charge transport 査読有り

    Atul S.M.Tripathi, Nikita Kumari, Shuichi Nagamatsu, Shuzi Hayase, Shyam S.Pandey

    Organic Electronics ( Elsevier )   65   1 - 7   2018年10月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Facile fabrication of large area [20 cm (L) × 2 cm (W)] uniform and oriented thin films of a variety of conjugated polymers (CPs) with minimal material wastage has been successfully demonstrated using our newly developed ribbon-shaped floating film transfer method (FTM). Under identical film fabrication conditions of FTM like hydrophilic liquid substrate consisted of ethylene glycol and glycerol (3:1), the temperature of 60 °C and polymer concentration 1% (w/w) in chloroform, order of molecular orientation was found to be PQT-C12 > F8T2 > NR-P3HT > PBTTT-C14 > PTB7. Depending on the nature of polymeric backbone, CPs exhibited different optical anisotropies in their oriented thin films, which was explained in terms of nature and rigidity of polymeric chains in the light of persistent length. Organic field effect transistors fabricated using these CPs exhibited clear p-type behaviour and anisotropic charge transport. Amongst various CPs used, PQT-C12 not only exhibited the highest optical anisotropy (DR = 5.1) but also highest anisotropic charge transport (μ||/μ⊥ = 7.1). Ribbon-shaped thin films of PQT-C12 prepared by slider based FTM exhibited best device performance with charge carrier mobility of 5.0 × 10−2 cm2/V and ON/OFF ratio of 106, when films were oriented parallel to the channel direction. Interestingly, a mobility of parallel oriented thin films prepared by FTM was about two orders of magnitude higher compared to the OFETs fabricated using conventional spin coating (6.7× 10−4 cm2/V).

    DOI: 10.1016/j.orgel.2018.10.043

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S1566119918305585

  • Synthesis and Optoelectrical Characterization of Novel Squaraine Dyes Derived from Benzothiophene and Benzofuran 査読有り

    G. Hanumantha Rao, Manish Pandey, Kamatham Narayanaswamy, Ravulakollu Srinivasa Rao, Shyam S. Pandey, Shuzi Hayase, and Surya Prakash Singh

    ACS Omega   3 ( 10 )   13919 - 13927   2018年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Synthesis and photophysical characterizations of two novel small molecules SQ-BEN-THI and SQ-BEN-FUR with D–A–D molecular structure consisting of squaraine as central unit and benzothiophene and benzofuran as end groups are being reported. Apart from very sharp and intense light absorption by these molecular sensitizers in near-infrared (NIR) wavelength region, their possibility as small molecular organic semiconductor was also explored after fabricating organic field-effect transistors (OFETs). Results obtained from photophysical, electrochemical, and quantum chemical studies were combined to elucidate the structural and optoelectronic properties. Electrical characterization pertaining to the charge-transport properties carried after OFET fabrication exhibited field-effect mobilities of 4.0 × 10–5 and 5.4 × 10–5 cm2/(V s) for SQ-BEN-THI and SQ-BEN-FUR, respectively. After thermal annealing at 130 °C, the field-effect mobility was found to increase for both squaraine dyes. Relatively facile carrier transport in SQ-BEN-FUR compared to that of SQ-BEN-THI could be attributed to relatively higher backbone planarity as indicated from optimized molecular structure obtained after density functional theory calculations. This work may guide for further molecular design and synthesis of novel squaraine dyes for high-performance OFET applications.

    DOI: 10.1021/acsomega.8b01240

    Kyutacar

  • Enhancement of charge transport in quantum dots solar cells by N-butylamine-assisted sulfur-crosslinking of PbS quantum dots 査読有り

    Zhen Wang, Zhaosheng Hu, Muhammad Akmal Kamarudin, Gaurav Kapil, Atul Tripathi, Qing Shen, Kenji Yoshino, Takashi Minemoto, Sham S. Pandey, Shuzi Hayase

    Solar Energy   174   399 - 408   2018年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    A novel and facile strategy to realize selective inorganic ligand (S2−) exchange on Pb-rich surface of PbS colloidal quantum dots (QDs) has been demonstrated. This was achieved via xanthate ligand decomposition at room temperature without damaging the QDs surface. This proposed method offers an amicable solution for the limitation that inorganic-terminated colloidal QDs are restricted by the specific requirement to solvents with high dielectric constant. Furthermore, Introduction of S2− to form sulfur-crosslinking PbS QDs enables reaction force-induced QDs arrays and smooth surface morphology of the spin-coated QDs film as evidenced by atomic force microscopy. Passivation of QDs by bromide combined with sulfur led to stronger electronic coupling between adjacent QDs as compared to bromide-only passivated QDs counterparts. Bromide and sulfur hybrid-capped QDs exhibited remarkably enhanced carrier mobility from 1.66 × 10−4 cm2/V s to 5.0 × 10−1 cm2/V s as evidenced by the Hall- Effect measurement. The smooth QDs film morphology and higher charge transport contributed to the boost in the power conversion efficiency of QDs solar cells up 4.96% compared that using only CTAB passivated PbS QDs solar cells (3.04%). This controlled sulfurization approach paves a potential way for improved optoelectronic properties and devices based on QDs.

    DOI: 10.1016/j.solener.2018.09.026

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0038092X18308983

  • Synthesis and Photophysical Characterization of Unsymmetrical Squaraine Dyes for Dye-Sensitized Solar Cells utilizing Cobalt Electrolytes 査読有り

    Anusha Pradhan, Maryala Saikiran, Gaurav Kapil, Shuzi Hayase, and Shyam Sudhir Pandey

    ACS Applied Energy Materials   1 ( 9 )   4545 - 4553   2018年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Development of novel near-infrared (near-IR) dyes compatible with cobalt complex based redox shuttles for their utilization as sensitizer is inevitable for the fabrication of high-efficiency dye-sensitized solar cells (DSSCs). A series of newly designed unsymmetrical squaraine dyes as a model of near-IR sensitizer were synthesized and characterized for their application as far-red sensitizers of DSSCs utilizing Co(bpy)2+/3+ redox electrolyte. It was shown that logical molecular design led to not only energetic tunability of the sensitizers but also the possibility of good far-red photon harvesting up to 750 nm. One of the newly designed sensitizers, SQ-110, bearing two long alkyl substituents in combination with an electron donating methoxy group directly linked to the aromatic ring was par excellent in terms of its photoconversion efficiency among the dyes utilized in this work. DSSC fabricated using SQ-110 as sensitizer and Co(bpy)2+/3+ redox electrolyte furnished a photoconversion efficiency of 1.98% along with good photon harvesting mainly in the far-red wavelength region. It was further demonstrated that dye molecular structure plays a rather more prominent role than their energetics in controlling the overall device performance of the DSSCs.

    DOI: 10.1021/acsaem.8b00653

    Kyutacar

  • A review of transparent solar photovoltaic technologies 査読有り

    Alaa AF Husain, Wan Zuha W Hasan, Suhaidi Shafie, Mohd N Hamidon, Shyam Sudhir Pandey

    Renewable and Sustainable Energy Reviews   94   779 - 791   2018年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.rser.2018.06.031

    Kyutacar

  • Study Pertaining to Observe the Effect of PbI2 Passivation on Carbon Electrode for Perovskite Solar Cells by Quartz Crystal Microbalance System 査読有り

    Putao Zhang, Gaurav Kapil, Kengo Hamada, Shyam Sudhir Pandey, Tingli Ma, Shuzi Hayase

    ACS Sustainable Chemistry & Engineering   6 ( 8 )   10221 - 10228   2018年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/acssuschemeng.8b01550

  • Anisotropic charge transport in highly oriented films of semiconducting polymer prepared by ribbon-shaped floating film 査読有り

    Atul SM Tripathi, Manish Pandey, Shifumi Sadakata, Shuichi Nagamatsu, Wataru Takashima, Shuzi Hayase, Shyam S Pandey

    Applied Physics Letters 112 (12), 123301 (2018).   112 ( 12 )   123301-1 - 123301-5   2018年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1063/1.5000566

    Kyutacar

    その他リンク: https://aip.scitation.org/

  • Implications of doping and depletion on the switching characteristics in polymer-based organic field-effect transistors 査読有り

    Shashi Tiwari, Manish Pandey, Wataru Takashima, Shuichi Nagamatsu, SK Balasubramanian, Shuzi Hayase, Shyam S Pandey, Rajiv Prakash

    Organic Electronics   56   152 - 158   2018年02月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.orgel.2018.02.012

    Kyutacar

  • Rapid Formation and Macroscopic Self-Assembly of Liquid-Crystalline, High-Mobility, Semiconducting Thienothiophene 査読有り

    Manish Pandey, Ashwathanarayana Gowda, Shuichi Nagamatsu, Sandeep Kumar, Wataru Takashima, Shuzi Hayase, Shyam S. Pandey

    Advanced Materials Interfaces   5 ( 6 )   1700875(1) - 1700875(11)   2018年01月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    A synergistic approach to enhance charge-carrier transport in organic semiconductors along with facile solution processing and high performance is crucial for the advancement of organic electronics. The floating film transfer method (FTM) is used as a facile and cost-effective method for the fabrication of large-scale, uniform, highly oriented poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (pBTTT C-14) films under ambient conditions. Utilization of such oriented films as the active semiconducting layer in organic field-effect transistors (OFETs) results in highly anisotropic charge-carrier transport. Highly oriented, FTM-processed pBTTT C-14 thin films are characterized by polarized electronic absorption and Raman spectroscopy, atomic force microscopy, out-of-plane X-ray diffraction, and grazing incident X-ray diffraction (GIXD) measurements. The GIXD data indicate an edge-on orientation, which is highly desirable for planar devices such as OFETs. OFETs built using the oriented films show a mobility anisotropy of 10 and the highest mobility is 1.24 cm2 V−1 s−1 along the backbone orientation, which is among the highest value reported for this class of materials using a similar device configuration.

    DOI: 10.1002/admi.201700875

    Kyutacar

    その他リンク: http://onlinelibrary.wiley.com/doi/10.1002/admi.201700875/abstract

  • Casting Control of Floating-films into Ribbon-shape Structure by modified Dynamic FTM 査読有り

    Tripathi, M Pandey, S Nagamatsu, SS Pandey, S Hayase, W Takashima

    Journal of Physics: Conference Series   924 ( 1 )   012014(1) - 012014(6)   2017年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    We have developed a new method to obtain Ribbon-shaped floating films via dynamic casting of floating-film and transfer method (dynamic-FTM). Dynamic-FTM is a unique method to prepare oriented thin-film of conjugated polymers (CPs) which is quick and easy. This method has several advantages as compared to the other conventional casting procedure to prepare oriented CP films. In the conventional dynamic FTM appearance of large scale circular orientation poses difficulty not only for practical applications but also hinders the detailed analysis of the orientation mechanism. In this present work, pros and cons of this newly proposed ribbon-shaped floating-film have been discussed in detail from those of the conventional floating-film prepared by dynamic-FTM.

    DOI: 10.1088/1742-6596/924/1/012014

    Kyutacar

    その他リンク: http://iopscience.iop.org/article/10.1088/1742-6596/924/1/012014/meta

  • Photophysical Characterization and BSA Interaction of Direct Ring Carboxy Functionalized Symmetrical squaraine Dyes 査読有り

    Maryala Saikiran, Shyam S Pandey, Shuzi Hayase, Tamaki Kato

    Journal of Physics: Conference Series   924 ( 1 )   012006(1) - 012006(10)   2017年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    A series of far-red sensitive symmetrical squaraine dyes bearing direct–COOH
    functionalized indole ring were synthesized, characterized and subjected to photophysical
    investigations. These symmetrical squaraine dyes were then subjected to investigate their
    interaction with bovine serum albumin (BSA) in Phosphate buffer solutions. All the squaraine
    dyes under investigation exhibit intense and sharp optical absorption mainly in the far-red
    wavelength region from 550 nm-700 nm having very high molar extinction coefficients from
    1.3× 10 5 dm 3. mol− 1. cm− 1. A very small Stokes shift of 10-17 nm indicates the rigid
    conformational structure of squaraine chromophore. Interaction of these dyes with BSA
    leads to not only enhanced emission intensity but also bathochromically shifted absorption
    maximum due to formation of dye-BSA conjugate. These dyes bind strongly with BSA

    DOI: 10.1088/1742-6596/924/1/012006

    Kyutacar

    その他リンク: http://iopscience.iop.org/article/10.1088/1742-6596/924/1/012006/meta

  • Parametric Optimization of Dye-Sensitized Solar Cells Using Far red Sensitizing Dye with Cobalt Electrolyte 査読有り

    A Pradhan, M Saikiran, G Kapil, S S Pandey, S Hayase

    Journal of Physics: Conference Series   924   012001(1) - 012001(9)   2017年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    A far-red sensitizing dye SQ-75 has been employed as a model sensitizer with Co
    (bpy) 2+/3+ redox electrolytes to fabricate dye-sensitized solar cells (DSSCs) and optimize
    the various device parameters which influence the overall photoconversion efficiency (PCE).
    It has been found that the optimization of the TiO 2 thickness, surface treatment with TiCl 4,
    and an optimum amount of the chenodeoxycholic acid (CDCA) as coadsorber are necessary
    to attain the overall improved PCE. TiCl 4 surface treatment on both FTO and TiO 2 has been
    found to outperform as compared to their untreated counterparts owing to the suppression of
    the charge recombination. DSSCs with an optimized TiO 2 thickness of 6 μm and CDCA
    concentration of 4 mM have exhibited best performance due to enhanced photon harvesting
    and reduced dye aggregation, respectively.

    DOI: 10.1088/1742-6596/924/1/012001

    Kyutacar

    その他リンク: http://iopscience.iop.org/article/10.1088/1742-6596/924/1/012001/meta

  • Investigation of the minimum driving force for dye regeneration utilizing model squaraine dyes for dye-sensitized solar cells 査読有り

    Anusha Pradhan, Takuya Morimoto, Maryala Saikiran, Gaurav Kapil, Shuzi Hayase, Shyam S Pandey

    Journal of Materials Chemistry A   5 ( 43 )   22672 - 22682   2017年10月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    Combined theoretical and experimental approaches were implemented to design model far-red sensitive unsymmetrical squaraine dyes in order to estimate the minimum energy barrier required for dye regeneration. Our logical molecular design indicated that it is possible to have a fine control on the energetics within 0.2 eV only by the judicious selection of substituents and alkyl chain length keeping the main π-molecular framework the same. The utilization of the LSDA functional under TD-DFT calculations offered an effective and economical computational method for the reliable prediction of the energetics as well as the absorption maximum of the sensitizers. Among the designed dyes under investigation, SQ-75 exhibited the best photovoltaic performance, having a short-circuit current density of 10.92 mA cm−2, open circuit voltage of 0.57 V and a fill factor of 0.67, leading to a photoconversion efficiency of 4.25% despite having photon harvesting mainly in the far-red region. The best photon harvesting by SQ-75, even with an energy difference of only 0.12 eV between the energy of its highest occupied molecular orbital and redox energy level I−/I3− electrolyte, corroborates the possibility for dye regeneration with such a small driving force.

    DOI: 10.1039/C7TA06990A

    Kyutacar

  • Efficient near infrared fluorescence detection of elastase enzyme using peptide-bound unsymmetrical squaraine dye 査読有り

    Maryala Saikiran, Daisuke Sato, Shyam S Pandey, Shuzi Hayase, Tamaki Kato

    Bioorganic & Medicinal Chemistry Letters   27 ( 17 )   4024 - 4029   2017年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.bmcl.2017.07.057

    Kyutacar

    その他リンク: https://www.sciencedirect.com/science/article/pii/S0960894X17307643

  • Air-stable vapor phase sensing of ammonia in sub-threshold regime of poly(2,5-bis(3-tetradecylthiophen-2yl)thieno(3,2-b)thiophene) based polymer thin-film transistor 査読有り

    Sahu P., Pandey M., Kumar C., Pandey S., Takashima W., Mishra V., Prakash R.

    Sensors and Actuators, B: Chemical   246   243 - 251   2017年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2017 Elsevier B.V. In the present study, device geometry having top contact bottom gated poly(2,5-bis(3-tetradecylthiophen-2yl)thieno(3,2-b)thiophene) (PBTTT) based polymer thin film transistor (PTFT) is reported to measure the changes in electrical responses with the exposure to various concentrations of ammonia vapor at room temperature. PTFT is preferred over other electronic devices due to its multi-parameter characteristics to explore gas sensing capabilities. A facile floating–film transfer method (FTM) is used to prepare an active layer of PTFT by forming optimized thin layer of PBTTT film having a thickness of ∼25 nm. Exposure to various concentrations of ammonia vapor, device parameters like I/O characteristics, mobility, threshold voltage, and trap density are found to change significantly. As PTFT is exposed to 100 ppm ammonia vapor a 70% reduction in mobility is observed whereas threshold voltage shifted to more negative from −17.62 V to −23.64 V. Better sensing capabilities with a detection limit of 0.33 ppm, fast response and recovery of exposed ammonia vapor are observed, when PTFT is operated in sub-threshold regime rather than the cut-off or saturated regime. All the electrical characterizations for the sensing purpose are carried out in ambient but in a closed chamber. Device shows enormous potential for ammonia sensing for real and environmental applications.

    DOI: 10.1016/j.snb.2017.02.063

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85013080947&origin=inward

  • Investigation of Interfacial Charge transfer in Solution Processed Cs2SnI6 Thin Films 査読有り

    Gaurav Kapil, Takeshi Ohta, Tsuguo Koyanagi, Yaohong Zhang, Murugan Vigneshwaran, Yuhei Ogomi, Shyam Sudhir Pandey, Kenji Yoshino, Qing Shen, Taro Toyoda, Md Mijanur Rahman, Takashi Minemoto, Takurou N Murakami, Hiroshi Segawa, Shuzi Hayase

    Journal of Physical Chemistry C   121 ( 24 )   13092 - 13100   2017年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/acs.jpcc.7b04019

  • Interplay of Orientation and Blending: Synergistic Enhancement of Field Effect Mobility in Thiophene-Based Conjugated Polymers 査読有り

    Manish Pandey, Shuichi Nagamatsu, Wataru Takashima, Shyam Sudhir Pandey, Shuzi Hayase

    Journal of Physical Chemistry C   121 ( 21 )   11184 - 11193   2017年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/acs.jpcc.7b03416

  • Layer-by-layer coating of oriented conjugated polymer films towards anisotropic electronics 査読有り

    Pandey M., Sadakata S., Nagamatsu S., Nagamatsu S., Pandey S., Hayase S., Hayase S., Takashima W.

    Synthetic Metals   227   29 - 36   2017年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2017 Dynamic casting of floating-film and transferring method for preparing oriented multilayer films of conjugated polymers is reported. This method is based on dynamic casting of a floating-film on liquid substrate to obtain oriented thin-film followed by its transfer on a desired solid substrate. The uniqueness in this method lies in the isolation of casting and coating procedures of oriented films, which enables us to fabricate the oriented multilayer with minimum interlayer interference. It provides a key-technology to build up the organic multi-layered architecture while preserving oriented morphologies. Several types of multilayer films have been prepared and investigated in detail in terms of their film characteristics. The layer-by-layer coating of oriented films demonstrated by this method is found to be a unique feature which overcomes cumbersome procedures in the conventional orientation methods. The coating procedure demonstrated in this study provides a facile methodology to construct anisotropic architectures.

    DOI: 10.1016/j.synthmet.2017.02.018

    Kyutacar

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85015758294&origin=inward

  • Solvent driven performance in thin floating-films of PBTTT for organic field effect transistor: Role of macroscopic orientation 査読有り

    Pandey M., Pandey S., Nagamatsu S., Nagamatsu S., Hayase S., Hayase S., Takashima W., Takashima W.

    Organic Electronics: physics, materials, applications   43   240 - 246   2017年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2017 Elsevier B.V. Considering the advantages of floating film transfer method (FTM), we have investigated the optical and electronic characteristics of PBTTT-C14 thin-films prepared by the static and the dynamic casting on liquid substrate. It has been demonstrated that judicious selection of solvents during FTM switches the casting mode from the static casting (S-FTM) using high boiling point solvent to the dynamic casting (D-FTM) from low boiling point solvent. Although both of the methods provide the edge-on oriented structure of PBTTT-C14 by XRD, the structural and the optical analyses reveal relatively extended π-conjugation length in parallel D-FTM film as compared to that of S-FTM. A high field-effect mobility (μ) of 0.11 cm 2 /V.s was exhibited by OFETs fabricated by parallel D-FTM film even without any high temperature post-annealing up to the liquid crystalline phase transition. This observed value of μ for parallel D-FTM is 4.7 and 12.8 times higher than the isotropic S-FTM and the perpendicular D-FTM films, respectively.

    DOI: 10.1016/j.orgel.2017.01.031

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85011373224&origin=inward

  • Controlling factors for orientation of conjugated polymer films in dynamic floating-film transfer method 査読有り

    Pandey M., Pandey S., Nagamatsu S., Nagamatsu S., Hayase S., Takashima W., Takashima W.

    Journal of Nanoscience and Nanotechnology   17 ( 3 )   1915 - 1922   2017年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Copyright © 2017 American Scientific Publishers All rights reserved. Orientation in conjugated polymers is a unique phenomenon by the virtue of their one dimensionality leading to semiconductor performances in organic electronic devices. A unique, cost-effective and highly efficient method for the fabrication of oriented thin film consisted of non-regiocontrolled poly(3-hexylthiophene) (NR-P3HT) using dynamic floating-film transfer method (dynamic-FTM) has been investigated. Orientation of NR-P3HT by dynamic-FTM has been quantitatively measured as the optical anisotropy represented by dichroic ratio (DR). Amongst several factors like concentration of polymer solution, temperature and viscosity of liquid-substrate along with post-annealing temperature, viscosity of liquid-substrate plays a crucial role in controlling the molecular orientation. A judicious control and optimization of various underlying factors affecting the molecular orientation led to relatively high DR of 9.3 even in NR-P3HT films cast by dynamic-FTM.

    DOI: 10.1166/jnn.2017.12816

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85009971833&origin=inward

  • Transparent Conductive Oxide Layer and Hole Selective Layer Free Back-Contacted Hybrid Perovskite Solar Cell 査読有り

    Zhaosheng Hu, Gaurav Kapil, Hiromitsu Shimazaki, Shyam Sudhir Pandey, Tingli Ma, Shuzi Hayase

    The Journal of Physical Chemistry C   121 ( 8 )   4214 - 4219   2017年02月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/acs.jpcc.7b00760

    その他リンク: http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.7b00760

  • Combined theoretical and experimental approaches for development of squaraine dyes with small energy barrier for electron injection 査読有り

    Shyam S Pandey, Takuya Morimoto, Naotaka Fujikawa, Shuzi Hayase

    Solar Energy Materials and Solar Cells   159   625 - 632   2017年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.solmat.2015.10.033

    Kyutacar

    その他リンク: http://www.sciencedirect.com/science/article/pii/S0927024815005449

  • Photophysical characterization and BSA interaction of the direct ring carboxy functionalized unsymmetrical NIR cyanine dyes 査読有り

    Maryala Saikiran, Daisuke Sato, Shyam S Pandey, Takeshi Ohta, Shuzi Hayase, Tamaki Kato

    Dyes and Pigments   140   6 - 13   2017年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.dyepig.2017.01.015

    Kyutacar

    その他リンク: http://www.sciencedirect.com/science/article/pii/S0143720816307975

  • Transparent conductive oxide-less dye-sensitized solar cells consisting of dye-cocktail and cobalt based redox electrolyte 査読有り

    Molla M., Baranwal A., Pandey S., Ma T., Hayase S.

    Journal of Nanoscience and Nanotechnology   17 ( 7 )   4748 - 4754   2017年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Copyright © 2017 American Scientific Publishers. All rights reserved. Thin Ti-metal protected stainless steel metal mesh coated with mesoporous TiO 2 as flexible photoanode has been used to fabricate back contact transparent conductive oxide-less dye-sensitized solar cells. TiO 2 nanoparticle having a particle size of 15-20 nm sensitized with dye cocktail of two indoline dyes D-205 and D-131 were first utilized owing to their complementary light harvesting properties. Short-circuit photocurrent density (J sc ) for the dye cocktail combination of D-205 and D-131 (1:1) was found to be increased due to the increased photon harvesting in the 400-500 nm mainly associated with the contribution from D-131 dye. In addition, the electron recombination was suppressed when dye cocktail was employed as confirmed by the dark current measurement leading to higher open-circuit voltage (V oc ). The enhanced J sc accompanied with increased V oc resulted in to an improved efficiency of 3.59% for this cocktail combination. To enhance the efficiency even further, we have utilized TiO 2 nanoparticle having a larger particle size of 30 nm facilitating the mass transport of the bulky [Co(bpy) 3 ] 3+/2+ redox species. In order to enhance the photon harvesting window TiO 2 nanoparticles were sensitized with porphyrin dye (YD2-o-C8) along with different dye cocktail combinations with another complementary dye (Y123). Utilization of a dye cocktail of YD2-o-C8 and Y123 (4:1) led to improved photoconversion efficiency of 5.25% under simulated solar irradiation.

    DOI: 10.1166/jnn.2017.13746

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85018244458&origin=inward

  • Transparent conductive oxide-less back contact dye-sensitized solar cells using flat titanium sheet with microholes for photoanode fabrication 査読有り

    Hayat A., Hayat A., Baranwal A., Nakamura M., Shigeki F., Pandey S., Ma T., Hayase S.

    Journal of Photonics for Energy   7 ( 1 )   2017年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). A flat titanium sheet with microholes (FTS-MH) has been utilized to fabricate transparent conductive oxide-less dye-sensitized solar cells (TCO-less DSSCs) in back contact device architecture. Utilization of FTS-MH to fabricate a TCO-less photoanode offers several advantages in terms of simplicity and ease of fabrication as compared with the TCO-less DSSCs structure reported previously. Hydrogen peroxide (H 2 O 2 ) surface treatments on FTS-MH have shown important factors to enhance the photoanode properties. H 2 O 2 surface treatment is able to change the surface morphology of FTS-MH, and the created anatase titanium dioxide (TiO 2 ) nanostructures increase the surface contact between the FTS-MH and the coated mesoporous TiO 2 . Electrochemical impedance investigations reveled that improvements of the FTS-MH/TiO 2 and TiO 2 /dye/electrolyte interface led to hampered charge recombination resulting in enhancement of both short-circuit current density and open-circuit voltage, respectively. Even after removal of both TCO layers, our complete TCO-less DSSCs exhibited a power conversion efficiency of 7.25% under simulated solar irradiation.

    DOI: 10.1117/1.JPE.7.015501

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85009473630&origin=inward

  • Influence of backbone structure on orientation of conjugated polymers in the dynamic casting of thin floating-films 査読有り

    Pandey M., Pandey S., Nagamatsu S., Nagamatsu S., Hayase S., Hayase S., Takashima W., Takashima W.

    Thin Solid Films   619   125 - 130   2016年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © 2016 Elsevier B.V. Dynamic casting of conjugated polymer films on liquid-substrate is a unique method which provides thin floating-film and can be easily transferred on a desired substrate by stamping. The important feature in this procedure is associated with the formation of thin polymeric film during compression and solidification controlled by viscous drag of liquid substrate and solvent evaporation of the polymer, respectively. Lyotropic liquid-crystalline (LC) characteristics of conjugated polymer possibly assist to orient the polymer chain in one direction. It is found that this method produce highly oriented thin films (dichroic ratio >  5) of thiophene-based conjugated polymers such as PBTTT-C14, PQT-C12 and non-regiocontrolled poly(3-hexylthiophene) NR-P3HT. On the other hand, weak orientation intensity in regioregular poly(3-hexylthiophene) RR-P3HT was found. The mechanism for this diverse orientation in thiophene-based conjugated polymers is discussed in correlation with the backbone chemical structure and lyotropic LC phase transition during the floating-film formation.

    DOI: 10.1016/j.tsf.2016.11.015

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84997830850&origin=inward

  • Facile Synthesis and Characterization of Sulfur Doped Low Bandgap Bismuth Based Perovskites by Soluble Precursor Route 査読有り

    Murugan Vigneshwaran, Takeshi Ohta, Satoshi Iikubo, Gaurav Kapil, Teresa S Ripolles, Yuhei Ogomi, Tingli Ma, Shyam S Pandey, Qing Shen, Taro Toyoda, Kenji Yoshino, Takashi Minemoto, Shuzi Hayase

    Chemistry of Materials   28 ( 18 )   6336 - 6340   2016年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/acs.chemmater.6b02315

    その他リンク: http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b02315

  • Enhancement of carrier mobility along with anisotropic transport in non-regiocontrolled poly (3-hexylthiophene) films processed by floating film transfer method 査読有り

    Manish Pandey, Shuichi Nagamatsu, Shyam S Pandey, Shuzi Hayase, Wataru Takashima

    Organic Electronics   38   115 - 120   2016年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.orgel.2016.08.003

    その他リンク: http://www.sciencedirect.com/science/article/pii/S156611991630341X

  • Indoor Light Performance of Coil Type Cylindrical Dye Sensitized Solar Cells 査読有り

    Gaurav Kapil · Yuhei Ogomi · Shyam S. Pandey · Tingli Ma · Shuzi Hayase ·

    Journal of Nanoscience and Nanotechnology   16 ( 4 )   3183 - 3187   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1166/jnn.2016.12324

    Scopus

  • Effect of Addition of KI on the Hydrothermal Growth of ZnO Nanostructures Towards Hybrid Optoelectronic Device Applications 査読有り

    Anubha bilgaiyan · Tejendra Dixit · Gaurav Kapil · Shyam S Pandey · Shuji Hayase Iyamperumal Anand Palani · Vipul Singh ·

    Journal of Nanoscience and Nanotechnology   16 ( 4 )   3301 - 3306   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1166/jnn.2016.12316

  • Parametric Optimization of Experimental Conditions for Dye-Sensitized Solar Cells based on Far-red Sensitive Squaraine Dye 査読有り

    Takuya Morimoto, Naotaka Fujikawa, Yuhei Ogomi, Shyam S. Pandey, Shuzi Hayase

    Journal of Physics:Conference Series   704   012002-1 - 012002-7   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1088/1742-6596/704/1/012002

    Kyutacar

    Scopus

  • Tandem Dye-Sensitized Solar Cells Based on TCO-less Back Contact Bottom Electrodes 査読有り

    Ajay K. Baranwal, Naotaka Fujikawa, Terumi Nishimura, Yuhei Ogomi, Shyam S. Pandey, Tingli Ma and Shuzi Hayase

    Journal of Physics:Conference Series   704   012003-1 - 012003-8   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1088/1742-6596/704/1/012003

    Kyutacar

    Scopus

  • Orientation Characteristics of Non-regiocontrolled Poly (3-hexyl-thiophene) Film by FTM on Various Liquid Substrates 査読有り

    M Pandey, S Nagamatsu, S S Pandey, S Hayase and W Takashima

    Journal of Physics:Conference Series   704   012005-1 - 012005-7   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1088/1742-6596/704/1/012005

    Kyutacar

    Scopus

  • Photophysical investigations of squaraine and cyanine dyes and their interaction with bovine serum albumin 査読有り

    M Saikiran, D Sato, S S Pandey and T Kato

    Journal of Physics:Conference Series   704   012012-1 - 012012-10   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1088/1742-6596/704/1/012012

    Scopus

  • A Special Section on Recent Progress in Nano-Molecular Electronics 査読有り

    Katsuhiko Ariga, Takaaki Manaka, Shyam S Pandey

    Journal of Nanoscience and Nanotechnology   16 ( 4 )   3157 - 3158   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1166/jnn.2016.12275

    Scopus

  • Design of far-red sensitizing squaraine dyes aiming towards the fine tuning of dye molecular structure 査読有り

    Morimoto T., Fujikawa N., Ogomi Y., Pandey S., Ma T., Hayase S.

    Journal of Nanoscience and Nanotechnology   16 ( 4 )   3282 - 3288   2016年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Copyright © 2016 American Scientific Publishers. All rights reserved. Model squaraine dyes having sharp and narrow absorptions mainly in the far-red wavelength region has been logically designed, synthesized and used for their application as sensitizer in the dye-sensitized solar cells (DSSC). In order to have fine control on energetics, dyes having same mother core and alkyl chain length varying only in molecular symmetry and position of substituent were designed. It has been found that even keeping all other structural factor constant, only positional variation of substituent leads to not only in the variation of energetics by 0.1 eV but affects the photovoltaic characteristics also. Optimum concentration of dye de-aggregating agent was found to be 100 times with respect to the sensitizing dye concentration. Amongst dyes utilized in this work best performance was obtained for unsymmetrical dye SQ-40 giving a photoconversion efficiency of 4.01% under simulated solar irradiation at global AM 1.5.

    DOI: 10.1166/jnn.2016.12304

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84969256666&origin=inward

  • Enhancing the performance of transparent conductive oxide-less back contact dye-sensitized solar cells by facile diffusion of cobalt species through TiO2 nanopores 査読有り

    Md Zaman Molla, Minobu Kawano, Ajay K Baranwal, Shyam S Pandey, Yuhei Ogomi, Tingli Ma, Shuzi Hayase

    RSC Advances   6 ( 40 )   33353 - 33360   2016年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/c6ra04894c

    Scopus

    その他リンク: http://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra04894c/unauth#!divAbstract

  • First principles analysis of oxygen vacancy formation and migration in Sr 2 BMoO 6 (B= Mg, Co, Ni) 査読有り

    Shuai Zhao, Liguo Gao, Chunfeng Lan, SHYAM S PANDEY, Shuji Hayase and Tingli Ma

    RSC Advances   6 ( 38 )   31968 - 31975   2016年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/C6RA05581H

    その他リンク: http://pubs.rsc.org/is/content/articlelanding/2016/ra/c6ra05581h/unauth#!divAbstract

  • Oxygen vacancy formation and migration in double perovskite Sr<inf>2</inf>CrMoO<inf>6</inf>: A first-principles study 査読有り

    Zhao S., Gao L., Lan C., Pandey S., Hayase S., Ma T.

    RSC Advances   6 ( 49 )   43034 - 43040   2016年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © The Royal Society of Chemistry 2016. The perovskite-type oxide ABO 3 with mixed ionic and electronic conductivity (MIEC) is a promising candidate for electrode materials of the intermediate-temperature solid oxide fuel cells (IT-SOFCs). The strontium molybdate SrMoO 3 shows high electrical conductivity but low oxygen ionic conductivity due to the stoichiometric features of oxygen. To enhance the oxygen ions diffusion rate, B-site Mo 4+ cation was partially substituted by trivalent transition metals (TM) to generate the oxygen-deficient double perovskite Sr 2 BMoO 6-δ . In this study, we present the theoretical investigation of the oxygen vacancy properties of Sr 2 CrMoO 6 (SCM) using density functional theory (DFT) with on-site Coulomb potential U for the Cr 3d electrons. The oxygen vacancy formation and migration were investigated for the B-site-ordered SCM, as well as the SCM with Cr/Mo antisite defects (ADs). The oxygen ion migration was optimized by the climbing image nudged elastic band (CINEB) method to identify the minimum energy pathway. The B-site Cr/Mo ADs allow various TM-O bond types in the double perovskite SCM. The calculated formation energy and migration barrier suggests that the B-site Cr/Mo ADs are favorable to enhance the oxygen ionic conductivity of the SCM. These results elucidate the influence of B-site Cr and Mo cations on the oxygen vacancy formation and migration in the double perovskite SCM, which can be useful for investigating Cr-doped SrMoO 3 as an IT-SOFCs anode.

    DOI: 10.1039/c6ra05581h

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84968747312&origin=inward

  • First principles analysis of oxygen vacancy formation and migration in Sr<inf>2</inf>BMoO<inf>6</inf> (B = Mg, Co, Ni) 査読有り

    Zhao S., Gao L., Lan C., Pandey S., Hayase S., Ma T.

    RSC Advances   6 ( 38 )   31968 - 31975   2016年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © The Royal Society of Chemistry 2016. Molybdenum-based double perovskites have been extensively studied as electrode materials in solid oxide fuel cells (SOFCs) due to their mixed ionic/electronic conductivity (MIEC) characteristics. Since the ionic conductivity in perovskite crystals arises primarily from oxygen ion diffusion via a vacancy-hopping mechanism, both the formation energy of the oxygen vacancy and the migration energy barrier play an essential role in the MIEC performance. In this work, we present a detailed first-principles investigation on the stoichiometric and oxygen-deficient structures of double perovskites, Sr 2 BMoO 6 (B = Mg, Co and Ni), using the density functional theory (DFT) method plus Hubbard U for Co and Ni. The electronic ground states of the oxygen-stoichiometric cells exhibited apparent eigenvalue gaps which are consistent with the measured insulating features. The oxygen-deficient structures were studied by removing a neutral oxygen atom according to SOFC working conditions, and the minimum energy path (MEP) of oxygen ion migration was optimized using the nudged elastic band (NEB) method which produced the theoretical migration energy barriers at the DFT+U level. The vacant oxygen sites released electrons to the adjacent cation d states, coupled with the delocalization characteristics of the Mo 4d state, which led eventually to the transition from an insulator to the electronic conductivity of the oxygen-deficient crystals. The electronic structure analysis suggested that the outer shell electrons of Mg, Co and Ni significantly affected the energies of oxygen vacancy formation and migration. Our results elucidate the effect of B-site substitution elements on the electronic properties and MIEC characteristics which provides theoretical support for the enhancement of the MIEC properties for these Mo-based double perovskites.

    DOI: 10.1039/c6ra02297a

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84963740416&origin=inward

  • Effect of Varying Alkyl Chain Length on Thermal Decomposition Temperature of Zinc (II) Xanthates and its Impact on Curing of Epoxy Resin 査読有り

    Tarun Chand Vagvala*, Shyam Sudhir Pandey, Suvratha Krishnamurthy and Shuzi Hayase

    Zeitschrift für anorganische und allgemeine Chemie   642 ( 2 )   134 - 139   2015年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1002/zaac.201500639

    Scopus

    その他リンク: http://onlinelibrary.wiley.com/doi/10.1002/zaac.201500639/full

  • Effects of different chloride precursors on crystal growth of lead halide perovskites 査読有り

    Vigneshwaran Murugan, Yuhei Ogomi, Shyam S Pandey, Taro Toyoda, Qing Shen, Shuzi Hayase

    Applied Physics Express   8 ( 12 )   125501-1 - 125501-4   2015年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.7567/APEX.8.125501

    Scopus

    CiNii Article

  • Relationship between diffusion of Co 3+/Co 2+ redox species in nanopores of porous titania stained with dye molecules, dye molecular structures, and photovoltaic performances 査読有り

    Minobu Kawano, Tsubasa Nishiyama, Yuhei Ogomi, Shyam S Pandey, Tingli Ma, Shuzi Hayase

    RSC Advances   5 ( 102 )   83725 - 83731   2015年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/c5ra11992h

    Scopus

  • Combining novel device architecture and NIR dye towards the fabrication of transparent conductive oxide-less tandem dye sensitized solar cells 査読有り

    Ajay Kumar Baranwal, Naotaka Fujikawa, Azwar Hayat, Yuhei Ogomi, Shyam S Pandey, Tingli Ma, Shuzi Hayase

    Applied Physics Express   8 ( 10 )   102301-1 - 102301-3   2015年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.7567/APEX.8.102301

    Scopus

    CiNii Article

  • Investigation of metal xanthates as latent curing catalysts for epoxy resin via formation of in-situ metal sulfides 査読有り

    Tarun Chand Vagvala, Shyam Sudhir Pandey, Yuhei Ogomi, Tingly Ma, Shuzi Hayase

    INORGANICA CHIMICA ACTA   435   292 - 298   2015年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.ica.2015.07.020

  • First principles study on the electronic and optical properties of B-site ordered double perovskite Sr 2 MMoO 6 (M= Mg, Ca, and Zn) 査読有り

    Shuai Zhao, Chunfeng Lan, Jie Ma, Shyam S Pandey, Shuzi Hayase, Tingli Ma

    Solid State Communications   213-214   19 - 23   2015年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.ssc.2015.04.012

    Scopus

    その他リンク: http://www.sciencedirect.com/science/article/pii/S0038109815001465#

  • Simple Metal-Free Dyes from Triphenylamine for DSSC: A Comparative Study of Two Different Anchoring Groups

    K. Narayanaswami, T. Swetha, Gaurav Kapil, Shyam S. Pandey, Shuzi Hayase and Surya Prakash Singh

    Electrochimica Acta   169   256 - 263   2015年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.electacta.2015.04.071

    Scopus

    その他リンク: http://www.sciencedirect.com/science/article/pii/S0013468615009639

  • Nonisothermal curing kinetics of epoxy resin composite utilizing Ga (III) xanthate as a latent catalyst 査読有り

    Tarun Chand Vagvala*, Gaurav Kapil, Shyam S. Pandey, Yuhei Ogomi and Shuzi Hayase*

    Journal of Applied Polymer Science   132 ( 26 )   42149-1 - 42149-7   2015年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1002/app.42149

    Scopus

    その他リンク: http://onlinelibrary.wiley.com/doi/10.1002/app.42149/full

  • Dye-sensitized solar cells based on axially ligated phosphorus-phthalocyanine dyes 査読有り

    Azwar Hayat, Gururaj M Shivashimpi, Terumi Nishimura, Naotaka Fujikawa, Yuhei Ogomi, Yoshihiro Yamaguchi, Shyam S Pandey, Tingli Ma, Shuzi Hayase

    Applied Physics Express   8 ( 4 )   047001-1 - 047001-4   2015年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.7567/APEX.8.047001

    Scopus

    CiNii Article

    その他リンク: http://iopscience.iop.org/1882-0786/8/4/047001

  • Complete Photodynamics of the Efficient YD2-o-C8 Based Solar Cell 査読有り

    Piotr Piatkowski, Cristina Martin, Maria Rosaria di Nunzio, Boiko Cohen, Shyam S Pandey, Shuzi Hayase, Abderrazzak Douhal

    Piotr Piatkowski, Cristina Martin, Maria Rosaria di Nunzio, Boiko Cohen, Shyam S Pandey, Shuzi Hayase, Abderrazzak Douhal   118   29674 - 29687   2014年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/jp510761z

    Scopus

  • A COMBINED THEORETICAL AND EXPERIMENTAL APPROACHES TOWARDS DESGNING NIR DYES FOR DYE-SENSITIZED SOLAR CELLS 査読有り

    YOSHIHIRO YAMAGUCHI, SHYAM S. PANDEY, NAOTAKA FUJIKAWA, YUHEI OGOMI, SHUZI HAYASE

    Journal of Engineering Science and Technology   9   53 - 66   2014年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • A combined theoretical and experimental approaches towards designing nir dyes for dye-sensitised solar cells 査読有り

    Yamaguchi Y., Pandey S., Fujikawa N., Ogomi Y., Hayase S.

    Journal of Engineering Science and Technology   9 ( Spec. Issue on Applied Engineering and Sciences (SAES2013), October 2014 )   51 - 65   2014年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    © School of Engineering, Taylor’s University. Sensitizing dyes especially having capability of sharp light absorption in the near infrared region play a pivotal role towards enhancing the photovoltaic efficiency of dye-sensitised solar cells. Effort has been directed towards the optimization of suitable calculation parameters for the theoretical calculations to assist the design of novel sensitizers for the dye-sensitised solar cells using Gaussian program package. Suitability of the calculation parameters as well as calculated results using the same model, unsymmetrical squaraine dye (SQ-1) was designed, synthesized and used for their characterisation and photovoltaic applications. Calculation results were performed in both ground and excited states of this molecule and indicate that B3LYP and B3PW91 are quite suitable hybrid functional for theoretical calculation using DFT and 6-311G basis set. Electronic absorption maximum for SQ-A in ethanol solution exhibits the peak at 650 nm which was found to be only 47 nm (0.04 eV) higher as compared to the calculated value (603 nm) using PCM solvent model under TD-DFT.

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84949633031&origin=inward

  • Titanium wire engineering and its effect on the performance of coil type cylindrical dye sensitized solar cells 査読有り

    Gaurav Kapil, Shyam S Pandey, Yuhei Ogomi, Tingli Ma, Shuzi Hayase

    Organic Electronics   15   3399 - 3405   2014年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.orgel.2014.09.023

    Scopus

  • Tandem dye-sensitized solar cells with a back-contact bottom electrode without a transparent conductive oxide layer 査読有り

    AK Baranwal, T Shiki, Y Ogomi, SS Pandey, T Ma, S Hayase

    RSC Advances   4   47735 - 47742   2014年09月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/c4ra07539k

    Scopus

  • Transparent conductive oxide-less back contact dye-sensitized solar cells using cobalt electrolyte 査読有り

    Md. Zaman Molla, Norihiro Mizukoshi, Hiroaki Furukawa, Yuhei Ogomi, Shyam S. Pandey, Tingli Ma and Shuzi Hayase

    Progress in Photovoltaic Research and Applications   2014年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1002/pip.2526

    Scopus

  • Graphene Oxide Based Biosensor for Food Toxin detection 査読有り

    Saurabh Srivastava, Md. Azahar Ali, Seema Umrao, Upendra Parashar, Anchal Srivastava, Gajjala Sumana, B. D. Malhotra, Shyam Sudhir Pandey and Shuzi Hayase

    Applied Biochemistry and Biotechnology   174   960 - 970   2014年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1007/s12010-014-0965-4

    Scopus

  • Template Assisted Electrochemical Growth of Polypyrrole Nanotubes for Development of High Sensitivity Glucose Biosensor 査読有り

    Pragya Agar Palod, Shyam S. Pandey, Shuzi Hayase and Vipul Singh

    Applied Biochemistry and Biotechnology   174   1059 - 1072   2014年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1007/s12010-014-0988-x

    Scopus

  • Far-Red Sensitizing Octatrifluorobutoxy Phosphorous Triazatetrabenzo-corrole: Synthesis, Spectral Characterization and Aggregation Studies 査読有り

    Gururaj M. Shivashimpi, Shyam S. Pandey, Azwar Hayat, Naotaka Fujikawa, Yuhei Ogomi, Yoshihiro Yamaguchi, Shuzi Hayase

    Journal of Photochemistry and Photobiology A:Chemistry   289   53 - 59   2014年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.jphotochem.2014.05.011

    Scopus

  • Gallium (III) xanthate as a novel thermal latent curing agent for epoxy resin composite 査読有り

    Tarun Chand Vagvala, SHYAM S PANDEY, Yuhei Ogomi, Shuji Hayase

    RSC Advances   4   24658 - 24661   2014年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/c4ra03151b

  • All solid perovskite solar cells with HOCO-R-NH3I anchor group inserted between porous TiO2 and perovskite 査読有り

    Yuhei Ogomi, Atsushi Morita, Shota Tsukamoto, Takahiro Saitho, Qing Shen, Taro Toyoda, Kenji Yoshino, Shyam S. Pandey, Tingli Ma and Shuzi Hayase;

    Journal of Physical Chemistry C   118 ( 30 )   16651 - 16659   2014年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/jp412627n

    Scopus

  • Fabrication and characterization of coil type transparent conductive oxide less cylindrical dye-sensitized solar cells 査読有り

    Gaurav Kapil, Jin Ohara, Yuhei Ogomi, SHYAM S PANDEY, Tingli Ma and Shuzi Hayase

    RSC Advances   4   22959 - 22963   2014年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/c4ra02999b

    Scopus

  • Spectroscopy and Dynamics of YD2-o-C8 in Solution and Interacting with Alumina Nanoparticles Electrode 査読有り

    Maria Rosaria di Nunzio, Boiko Cohen, Shyam S. Pandey, Shuzi Hayase, Giovanni Piani, and Abderrazzak Douhal

    Journal of Physical Chemistry C   118   11365 - 11376   2014年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/jp503449q

    Scopus

  • Transparent conductive oxide-less back contact dye-sensitized solar cells using Zinc porphyrin dye employing cobalt complex redox shuttle 査読有り

    Molla M., Pandey S., Ogomi Y., Ma T., Hayase S.

    2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014   1538 - 1542   2014年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    © 2014 IEEE. A transparent conductive oxide-less (TCO-less) dye-sensitized solar cell (DSSC) consisting of back-contacted stainless steel metal mesh electrode has been fabricated. In this work, [Co(bpy) 3 ] 3+/2+ complex based redox electrolyte and porphyrin dye as sensitizer were utilized. Owing to relatively deeper redox energy level for cobalt based electrolytes as compared to I 3 - /I - redox system, possibility of obtaining high open-circuit voltage was explored. Employing a thin film of Ti on the metal mesh as the charge recombination blocking layer resulted in enhanced photoconversion efficiency. TCO-less DSSC in combination with cobalt electrolyte gave the power conversion efficiency of 4.89% under simulated solar irradiation.

    DOI: 10.1109/PVSC.2014.6925209

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84912084270&origin=inward

  • Flexible transparent conductive oxide-less cylinder dyesensitized solar cells 査読有り

    Usagawa J., Pandey S., Ogomi Y., Hayase S.

    Advanced Optoelectronics for Energy and Environment, AOEE 2013   2013年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Dye sensitized solar cells which does not need transparent conductive oxide layered glass (TCO-less DSCs) are reviewed. Especially, flexible cylinder TCO-less DSCs with 5.1% efficiency is focused on. © OSA 2013.

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84887697352&origin=inward

  • Dye sensitized solar cells consisting of metallophthalocyanine axially anchored on metal oxide nanoparticles through metal-o-metal linkages-difference in photovoltaic performances between TiO<inf>2</inf> and SnO<inf>2</inf> electrode 査読有り

    Park B., Shen Q., Shen Q., Ogomi Y., Pandey S., Toyoda T., Hayase S.

    ECS Journal of Solid State Science and Technology   2 ( 1 )   2013年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    High performance SnO 2 -based bottom electrodes are necessary for tandem dye-sensitized solar cells (DSSCs) harvesting infrared (IR) lights. Sensitizing dyes based on macrocyclic ligands are one of the candidates among the IR dyes. However, it is difficult to introduce anchoring groups such as carboxylic acid at the right position of macrocyclic rings where electron injection occurs. It was proved that axially anchored phthalocyanines (model compounds) bonded to SnO 2 nanoparticle surfaces with short metal-O-metal linkage inject electrons from dyes to SnO 2 layers spatially, because themacrocyclic rings are very close to SnO 2 surfaces. TiO 2 based DSSCs did not show photovoltaic properties because of very fast charge recombination between injected electrons and oxidized dyes which were measured by a transient absorption spectroscopy technique. In the case of SnO 2 -based DSSC, the charge recombination was slower than that of the TiO 2 -based DSSCs, which enabled the collection of electrons. Since this anchoring system can be prepared easily, it is a good strategy for use in the design of near-IR absorbing dye. © 2012 The Electrochemical Society.

    DOI: 10.1149/2.014301jss

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84887416199&origin=inward

  • Effect of extended π-conjugation on photovoltaic performance of dye sensitized solar cells based on unsymmetrical squaraine dyes 査読有り

    Pandey S., Watanabe R., Fujikawa N., Shivashimpi G., Ogomi Y., Yamaguchi Y., Hayase S.

    Tetrahedron   69 ( 12 )   2633 - 2639   2013年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Aiming toward the far-red to near infra-red (NIR) photon harvesting, three new unsymmetrical squaraine dyes bearing direct ring carboxy functionalized indole as an anchoring moiety with varying donor groups with extended π-conjugation have been successfully synthesized and utilized for dye sensitized solar cell fabrication. Under simulated solar irradiation, dye SQ-8 gave a photoconversion efficiency of 3.3% mainly harvesting photons in the far-red region between 500 and 700 nm. By extending the π-conjugation of the donor moieties in the novel unsymmetrical squaraine dyes, it was possible to extend the light absorption from far-red to NIR wavelength region. In spite of good light absorption up to 900 nm and energetic matching, dye SQ-16 was found to exhibit the decreased photon harvesting, which was explained by the enhanced dye aggregation along with its difficulty in facile electron injection as indicated from electronic absorption spectroscopic and DFT calculation results, respectively. © 2013 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.tet.2013.01.036

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84874117228&origin=inward

  • Effect of extended p-conjugation on photovoltaic performance of dye-sensitized solar cells based on unsymmetrical squaraine dyes 査読有り

    Shyam S. Pandey, Rie Watanabe, Naotaka Fujikawa, Gururaj M. Shivashimpi, Yuhei Ogomi, Yoshihiro Yamaguchi and Shuzi Hayase

    Tetrahedron   69   2633 - 2639   2013年01月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Electrophoretic deposition onto an insulator for thin film preparation toward electronic device fabrication 査読有り

    Shougo Miyajima, Shuichi Nagamatsu, Shyam S. Pandey, Shuzi Hayase, Keiichi Kaneto and Wataru Takashima

    Applied Physics Letters   101   193305-1 - 193305-4.   2012年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1063/1.4766126

    Scopus

  • Dye sensitized solar cells consisting of metallophthalocyanines axially anchored on metal-oxide nanoparticles through Metal-O-metal linkages-Difference in photovoltaic performances between TiO2 and SnO2 electrodes 査読有り

    Byung-wook Park, Qing Shen, Yuhei Ogomi, Shyam S. Pandey, Taro Toyoda and Shuzi Hayase.

    ECS Journal of Solid-State Science and Technology   2 ( 1 )   Q6 - Q11   2012年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Dye-Sensitized Solar Cells based on Novel Far-red Sensitizing Unsymmetrical Squaraine Dye containing Pyrroloquinoline Moiety 査読有り

    Shyam S. Pandey, Naotaka Fujikawa, Rie Watanabe, Yuhei Ogomi, Yoshihiro Yamaguchi and Shuzi Hayase

    Japanese Journal of Applied Physics; Vol. 51, No.-10, Issue-2, pages 10NE12-1-10NE12-5.   51 ( 10 )   10NE12-1 - 10NE12-5   2012年10月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Differences in Dye-Sensitized Photovoltaic Behaviours between SnO2 and TiO2 Electrodes 査読有り

    Kengo Sadamasu, Yuhei Ogomi, Shyam S. Pandey and Shuzi Hayase

    Japanese Journal of Applied Physics   51 ( 10 )   10NE05-1 - 10NE05-5   2012年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1143/JJAP.51.10NE05

    Scopus

    CiNii Article

  • Relating the Photodynamics of Squaraine-Based Dye-Sensitized Solar Cells to the Molecular Structure of the Sensitizers and to the Presence of Additives 査読有り

    G. de Miguel, M. Marchena, B. Cohen, S. S. Pandey, S. Hayase and A. Douhal

    Journal of Physical Chemistry-C   116 ( 42 )   22157 - 22168   2012年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/jp306125y

    Scopus

  • Dye sensitized solar cells based on novel far red sensitizing unsymmetrical squaraine dye containing pyrroloquinoline moiety 査読有り

    Pandey S., Fujikawa N., Watanabe R., Ogomi Y., Yamaguchi Y., Hayase S.

    Japanese Journal of Applied Physics   51 ( 10 PART 2 )   2012年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    A novel far-red sensitive and direct aromatic ring carboxy functionalized unsymmetrical squaraine dye based on pyrroloquinoline moiety has been synthesized for the application as sensitizer of dye sensitized solar cells. This dye bearing the characteristics of both of indole and quinoline moieties exhibits the photon harvesting up to 820 nm. The enhancement in the photon harvesting window by the pyrroloquinoline based squaraine dye was attributed to the presence of increased π-conjugation in its pyrroloquinoline donor part. This pyrroloquinoline bearing unsymmetrical squaraine dye exhibits a short circuit current density of 9.88 mA/cm2, an open circuit voltage of 0.57 V and fill factor of 0.59 leading to the external power conversion efficiency of 3.33% under simulated solar irradiation of 100mW/cm2 at AM 1.5 condition. © 2012 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.51.10NE12

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84869127716&origin=inward

  • Back contact dye-sensitized solar cells of various shapes without transparent conducing oxides (TCO-less DCCSs)-

    Jun Usagawa, Takeshi Kougo, Yuhei Ogomi, Shyam S. Pandey and Shuzi Hayase

    Trends in Advanced Sensitized and Organic Solar Cells   2012年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Solution processable thin film organic photovoltaic cells based on far red sensitive2 soluble squaraine dye 査読有り

    Shyam S. Pandey, Takafumi Mizuno, Sandeep K. Das, Yuhei Ogomi and Shuzi Hayase.

    Thin Solid Films   522   401 - 406   2012年08月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.tsf.2012.08.043

    Scopus

  • Novel unsymmetrical squaraine dye bearing cyanoacrylic acid anchoring group and its photosensitization behaviour 査読有り

    Gururaj M. Shivashimpi, Shyam S. Pandey, Rie Watanabe, Naotaka Fujikawa, Yuhei Ogomi, Yoshihiro Yamaguchi and Shuzi Hayase

    Tetrahedron Letters   53 ( 40 )   5437 - 5440   2012年07月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.tetlet.2012.07.125

    Scopus

  • Femto- to millisecond photophysical characterization of indole-based squaraines adsorbed on TiO <inf>2</inf> nanoparticle thin films 査読有り

    De Miguel G., Marchena M., Ziółek M., Pandey S., Hayase S., Douhal A.

    Journal of Physical Chemistry C   116 ( 22 )   12137 - 12148   2012年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    In this paper, we address femto- to millisecond transient absorption studies of TiO 2 nanoparticle (NP) thin films sensitized with four squaraine (SQ) molecules, with and without a deaggregating agent, chenodeoxycholic acid (CDCA). On the femto- to picosecond time scale, we determined the presence of three transient species by using singular value decomposition (SVD) analysis, i.e., S 1 of the SQ monomers, S 1 of the SQ H-aggregates, and the SQ radical cation formed after the electron injection. Both monomers and H-aggregates are proven to inject electrons to the TiO 2 conduction band, being 5 times faster in the monomers (e.g., k ei mon = 5.1 × 10 11 s -1 and k ei H-agg = 1.1 × 10 11 s -1 for SQ 41). Besides, the undesired singlet-singlet annihilation is an active process in these samples, constituting the drain of a high percentage of the absorbed photons. The coadsorption of CDCA on the TiO 2 NP avoids the formation of H-aggregates, and therefore, only two transient species are present in these samples: S 1 of the monomer and the SQ radical cation with k ei mon = 6.7 × 10 11 s -1 for SQ 41. On the microsecond scale, we only observed the transient feature of the radical cation of the SQ that permits one to study its recombination dynamics. Similar lifetimes (94-150 μs) of the four SQ radial cations are obtained when only monomers are present in the sample. In the absence of CDCA, the presence of H-aggregates contributes to shorten the lifetime of the radical cation (e.g., from 110 to 45 μs in the case of SQ 41). This fact can be explained by considering a stronger electronic coupling of H-aggregates/TiO 2 surface with respect to the monomers. These results explore the photodynamics of this family of SQs adsorbed on TiO 2 NP in a very large time window and will enable a better understanding of the influence of aggregates in the kinetics of these SQs used as sensitizers in DSSCs. © 2012 American Chemical Society.

    DOI: 10.1021/jp302928f

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861949986&origin=inward

  • Femto to Millisecond Photophysical Characterization of Indole-based Squaraines Adsorbed on TiO2 Nanoparticle Thin Films. 査読有り

    de Miguel, Gustavo; Marchena, Maria Jose; Ziolek, Marcin; Pandey, Shyam; Hayase, Shuzi; Douhal, Abderrazzak

    Journal of Physical Chemistry-C;   116 ( 22 )   12137 - 12148   2012年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    その他リンク: https://pubs.acs.org/journal/jpccck

  • Flexible Transparent Conductive Oxide-less Flat and Cylinder Dye-Sensitized Solar Cells 査読有り

    Jun Usagawa, Takeshi Kougo, Kengo Sadamasu, Shyam S. Pandey, Yuhei Ogomi and Shuzi Hayase

    Journal of Photonics for Energy   2 ( 1 )   021011-1 - 021011-10   2012年05月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1117/1.JPE.2.021011

    Scopus

  • Photophysics of H-and J-aggregates of Indole based squaraines in solid state. 査読有り

    G. de Miguel, M. Ziolek, M, Zitnan, J. A. Organero, S. S. Pandey, S Hayase and A. Douhal

    Journal of Physical Chemistry-C   116 ( 17 )   9379 - 9389   2012年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1021/jp210281z

    Scopus

    その他リンク: https://pubs.acs.org/journal/jpccck

  • Multiple electron injection dynamics in linearly linked two dye-co-sensitized nanocrystalline metal oxide electrode for dye sensitized solar cells;; 査読有り

    Qing Shen, Y. Ogomi, Byung-wook Park, Takafumi Inoue, Shyam S. Pandey, Akari Miyamoto, Shinsuke Fujita, Kenji Katayama, Taro Toyoda and Shuzi Hayase

    Physical Chemistry and Chemical Physics   14   4605 - 4613   2012年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/c2cp23522f

    Scopus

  • Transparent conductive oxide less flexible dye-sensitized solar cells with flat and cylinder shapes 査読有り

    Usagawa J., Park B., Ogomi Y., Pandey S., Hayase S.

    Materials Research Society Symposium Proceedings   1435 ( January )   51 - 54   2012年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    © 2012 Materials Research Society. Transparent conductive oxide less flexible dye-sensitized solar cells (TCO-less DSC) with flat and cylinder shapes are reported. The cell consists of a plastic cover, a flexible titania/dye sheet back contacted with a metal mesh sheet, a gel electrolyte sheet, and Pt layer on a Ti sheet. How to increase the efficiency were discussed. We concluded that making a titania/dye layer on a metal mesh sheet thinner and using a thinner electrolyte layer were effective for increasing the efficiency. A flat TCO-less DSC with 6.1 % efficiency and a cylindrical TCO-less DSC with 5.1 % efficiency are reported.

    DOI: 10.1557/opl.2012.1695

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84939199830&origin=inward

  • Femto to millisecond observations of indole-based squaraines molecules photodynamics in Solution 査読有り

    G. de Miguel, M. Marchena, M. Ziolek, M, Zitnan, S. S. Pandey, S Hayase and A. Douhal

    Physical Chemistry and Chemical Physics   2011年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1039/c1cp22864a

    Scopus

    その他リンク: http://pubs.rsc.org/en/content/articlelanding/2012/cp/c1cp22864a

  • Multiple electron injection from dyes to titania layer for high efficiency-dye-sensitized solar cells 査読有り

    Park B., Sadamasu K., Ogomi Y., Miyamoto A., Fujita S., Pandey S., Shen Q., Shen Q., Toyoda T., Hayase S.

    Conference Record of the IEEE Photovoltaic Specialists Conference   001187 - 001191   2011年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    We report two kinds of dye-sensitized solar cells where multiple electron injection mechanism is used. One is multiple electron injection consisting of linearly linked two dye molecules. Tin(IV) 2,11,20,29-tetra-tert-butyl-2,3- naphthalocyanine (NcSn) was adsorbed on a SnO 2 surface by a Sn(p)-O-Sn(n) linkage, where Sn(p) and Sn(n) stand for a Sn atom on a Sn nanoparticle surface and that at the center of NcSn, respectively. Cis-diisothiocyanato- bis(2,2′-bipyridyl-4,4′-dicarboxylato) ruthenium(II) bis(tetrabutylammonium), known as N719, was bonded to NcSn by a-Sn(n)-O-CO-linkage. The incident photon to photocurrent efficiency (IPCE) curve of the cell (DD-cell) suggested that electrons are injected from both N719 and NcSn to SnO 2 nanoparticles. The mechanism was supported by transient absorption spectra studies. The other is multiple electron injection from double titania layer (top and bottom layers). The top and bottom electrodes were stained with different dyes having different λ max. A top layer fabricated on a glass was mechanically pressed with a bottom layer fabricated on a glass cloth to fabricate an anode. The glass cloth acts as a supporter of a porous titania layer as well as a holder of electrolyte. The incident photon to current efficiency (IPCE) curve had two peaks corresponding to those of the two dyes, which demonstrates that electrons are collected from both the top and bottom layers. © 2011 IEEE.

    DOI: 10.1109/PVSC.2011.6186168

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861091125&origin=inward

  • Transparent Conductive Oxide-less thee-dimentional cylindrical dye-sensitized solar cell fabricated with flexible metal mesh electrode 査読有り

    Jun Usagawa, Shyam S. Pandey, Yuhei Ogomi, Sho Noguchi, Yoshihiro Yamaguchi and Shuzi Hayase

    Progress in Photovoltaics Research and Applications   2011年11月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1002/pip.1223

    Scopus

    その他リンク: http://onlinelibrary.wiley.com/doi/10.1002/pip.1223/full

  • Aiming at high efficiency dye-sensitized solar cells - From the view point of photoconversion interface 査読有り

    Hayase S., Ogomi Y., Pandey S.

    Electrochemistry   79 ( 10 )   761 - 764   2011年10月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Researches aiming at high efficiency-dye-sensitized solar cells (DSC) are reviewed from the view point of photoconversion interfaces. Developments of dyes converting photons to electrons in near infrared regions are essential for increasing short circuit current (Jsc). Hybrid cells consisting of double dye structures and double titania layer structures are proposed. Leak currents at photoconversion interfaces decrease open circuit voltage (Voc) and fill factor (FF). Therefore, strategies for decreasing leak currents are essential, especially for all-solid DSCs and IVLf free DSCs. Structures of these interfaces are discussed in terms of surface passivation, self-organization, dye structures, interactions between dyes and I3 - in titania nanopores. Fundamental studies for tandem cells are also reported.

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=82555185358&origin=inward

  • Fine tuning the structure of unsymmetrical squaraine dyes towards the development of efficient dye sensitized solar cells 査読有り

    Shyam S. Pandey, Rie Watanabe, Naotaka Fujikawa, Yuhei Ogomi, Yoshihiro Yamaguchi and Shuzi Hayase

    SPIE Proceeding   8111   811116-1 - 811116-9   2011年09月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    USA   Sandiego, LA   2011年08月21日  -  2011年08月26日

    DOI: 10.1117/12.893354

    Scopus

    その他リンク: http://dx.doi.org/10.1117/12.893354

  • Investigating the Role of Dye Dipole on Open Circuit Voltage in Solid-State Dye-Sensitized Solar Cells 査読有り

    Shyam S Pandey, Kyung-Young Lee, Azwar Hayat, Yuhei Ogomi, and Shuzi Hayase

    Japanese Journal of Applied Physics   50 ( 6 )   06GF08-1 - 06GF08-4   2011年06月

     詳細を見る

    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1143/JJAP.50.06GF08

    Scopus

    CiNii Article

  • Transparent conductive oxideless tandem dye-sensitized solar cells consisting of light-splitting structures 査読有り

    Jun Usagawa,Masaki Kaya,Yuhei Ogomi,Shyam S. Pandey,and Shuzi Hayase

    Journal of Photonics for Energy   1 ( 1 )   011110 - 1   2011年03月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1117/1.3555458

    Scopus

  • Hybrid Dye-Sensitized Solar Cells Consisting of Double Titania Layers for Harvesting Light with Wide Range of Wavelengths 査読有り

    Kengo Sadamasu,Takafumi Inoue,Yuhei Ogomi,Shyam S. Pandey,and Shuzi Hayase

    Applied Physics Express   4 ( 2 )   022301 - 1   2011年01月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1143/APEX.4.022301

    Scopus

    CiNii Article

  • TCO-less 3D-DYE-sensitized solar cells consisting of charge separation sheet and direction to high efficiency cells by using TCO-less structure 査読有り

    Usagawa J., Uzaki K., Pandey S., Ogomi Y., Yamaguchi Y., Kono M., Hayase S.

    Conference Record of the IEEE Photovoltaic Specialists Conference   518 - 522   2010年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Three dimensional transparent conductive oxide-less dye-sensitized solar cells (3D-TCO-less DSCs) consisting of a flexible porous titania sheet are reported. The flexible titania sheet is composed of a dye stained porous titania layer and a mesh sheet acting as the backbone. Flexible TCO-less DSCs, tandem DSCs, TCO-less cylinder DSCs and TCO-Iess cubic DSCs are fabricated and their fundamental photovoltaic performances are reported. © 2010 IEEE.

    DOI: 10.1109/PVSC.2010.5616802

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78650153655&origin=inward

  • Electron Injection from Linearly Linked Two Dye Molecules to Metal Oxide Nanoparticles for Dye Sensitized Solar Cells Covering Wavelength Range from 400-950 nm 査読有り

    Byung-wook Park,Takafumi Inoue,Yuhei Ogomi,Akari Miyamoto,Shinsuke Fujita,Shyam S. Pandey and Shuzi Hayase

    Applied Physics Express   4 ( 1 )   012301 - 1   2010年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1143/APEX.4.012301

    Scopus

    CiNii Article

  • Tandem dye-sensitized solar cells consisting of floating electrode in one cell 査読有り

    Uzaki K., Pandey S., Hayase S.

    Journal of Photochemistry and Photobiology A: Chemistry   216 ( 2-3 )   104 - 109   2010年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    Tandem dye-sensitized solar cells (Cell TAN) consisting of a floating electrode (bottom cell) and a TiO 2 electrode prepared on a F-doped SnO 2 glass (top cell) are reported. The floating electrode is a flexible and self-standing composite film consisting of a porous titania/dye layer supported by a mesh electrode. The floating electrode was inserted between the TiO 2 electrode and the counter electrode in a conventional single dye-sensitized solar cell to fabricate the Cell TAN. Therefore, the Cell TAN is completely different from previously reported tandem cells where two cells are merely accumulated and connected to each other. The Incident Photon to Current Conversion Efficiency (IPCE) curve for the Cell TAN had two peaks corresponding to those of the two single cells. The open circuit voltage (V oc ) of the Cell TAN (0.88 V) was higher than that of the corresponding single cell (0.6-0.66 V). These two results strongly demonstrated that the Cell TAN has a potential for tandem cells. © 2010 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jphotochem.2010.07.025

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78549244403&origin=inward

  • TCO-less 3D dye-sensitized solar cells consisting of charge separation sheet -tandem, hybrid, cylinder and fiber cells- 査読有り

    Usagawa J., Uzaki K., Kaya M., Kougo T., Pandey S., Ogomi Y., Yamaguchi Y., Kono M., Hayase S.

    2010 10th IEEE Conference on Nanotechnology, NANO 2010   171 - 175   2010年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)

    Three dimensional transparent conductive oxide-less dye-sensitized solar cells (3D-TCO-less DSCs) consisting of a flexible porous titania sheet are reported. The flexible titania sheet is composed of a dye stained porous titania layer and a mesh sheet acting as the backbone. Flexible TCO-less DSCs, tandem DSCs, TCO-less cylinder DSCs and TCO-less cubic DSCs are fabricated and their fundamental photovoltaic performances are reported. ©2010 IEEE.

    DOI: 10.1109/NANO.2010.5698067

    Scopus

    その他リンク: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79951833500&origin=inward

  • Solvation Effect on the Ion Exchange in Polypyrrole Film doped with Sulfonated Polyaniline 査読有り

    Wataru Takashima,Hikaru Hashimoto,Kazuo Tominaga,Akihisa Tanaka,Shyam S. Pandey and Keiichi Kaneto

    Thin Solid Films, Vol. 519, pp. 1093-1099 (2010).   519   1093 - 1099   2010年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.tsf.2010.08.050

    Scopus

  • Probing Mechanism of Dye Double Layer Formation from Dye Cocktail Solution for Dye Sensitized Solar Cells 査読有り

    Yuhei Ogomi,Shyam S. Pandey,Shunta Kimura and Shuzi Hayase

    Thin Solid Fims   519   1087 - 1092   2010年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.tsf.2010.08.049

    Scopus

  • Tandem Dye-Sensitized Solar Cells Consisting of Nanoporous Titania Sheet 査読有り

    Kenshiro Uzaki,Shyam S. Pandey,Yuhei Ogomi and Shuzi Hayase

    Japanese Journal of Applied Physics, Vol. 49, No.-6, pp. 062301 (2010).   49 ( 6 )   082301 - 1   2010年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1143/JJAP.49.082301

    Scopus

    CiNii Article

  • Alkyl and Fluoro-alkyl Substituted Squaraine Dyes: A Prospective Approach Towards Development of Novel NIR Sensitizers 査読有り

    Shyam S. Pandey,Takafumi Inoue,Naotaka Fujikawa,Yoshihiro Yamaguchi and Shuzi Hayase

    Thin Solid Films   519   1066 - 1071   2010年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.tsf.2010.08.045

    Scopus

  • Tandem Dye Sensitized Solar Cells Consisting of Floating Electrode in One Cell 査読有り

    Kenshiro Uzaki,Shyam S. Pandey,and Shuzi Hayase

    Journal of Photochemistry and Photobiology A: Chemistry   216 ( 1 )   104 - 109   2010年08月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Substituent Effect in Direct Ring Functionalized Squaraine Dyes on Near Infra-Red Sensitization of NanocrystallineTiO2 for Molecular Photovoltaics 査読有り

    Shyam S. Pandey,Takafumi Inoue,Naotaka Fujikawa,Yoshihiro Yamaguchi and Shuzi Hayase

    Journal of Photochemistry and Photobiology A: Chemistry, Vol. 214, pp. 269-275 (2010)   214 ( 2-3 )   268 - 275   2010年07月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.jphotochem.2010.07.010

    Scopus

  • Synthesis and characterization of squaric acid based NIR dyes for their application towards dye sensitized solar cells 査読有り

    Takafumi Inoue,Shyam S. Pandey,Naotaka Fujikawa,Yoshiro Yamaguchi and Shuzi Hayase

    Journal of Photochemistry and Photobiology A: Chemistry, Vol 213, pp. 23-29 (2010).   213 ( 1 )   23 - 29   2010年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

    DOI: 10.1016/j.jphotochem.2010.04.015

    Scopus

  • Tandem Dye Sensitized Solar Cells Consisting of Floating Electrode Supported by Non-Conductive Glass Mesh 査読有り

    Kenshiro Uzaki,Shyam S. Pandey,Yuhei Ogomi and Shuzi Hayase

    Advances in Science and Technology   74   157 - 163   2010年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Influence of nature of surface dipoles on observed photovoltage in dye-sensitized solar cells as probed by surface potential measurements 査読有り

    Shyam S. Pandey,Shohei Sakaguchi,Yoshiro Yamaguchi,Shuzi Hayase

    Organic Electronics   11 ( 3 )   419 - 426   2009年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    主要雑誌

    DOI: 10.1016/j.orgel.2009.11.021

    Scopus

  • Role of morphology on Photoluminescence quenching and depletion width formed at the interface of Aluminum and Poly(3-Alkylthiophene) 査読有り

    Vipul Singh,Shyam S Pandey,Wataru Takashima,and Keiichi Kaneto

    Japanese Journal of Applied Physics   41 ( 6 )   061503 - 1   2009年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

  • Tandem Dye-Sensitized Solar Cells Fabricated on Glass Rod without Transparent Conductive Layers 査読有り

    Jun Usagawa,Shyam S. Pandey,Shuzi Hayase,Mitsuru Kono,and Yoshihiro Yamaguchi

    Applied Physics Express   2 ( 6 )   062203 - 1   2009年06月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    主要雑誌

  • Transparent Conductive Oxide layer-less dye-sensitized solar Cells consisting of floating electrode with gradient TiOx layer 査読有り

    パンディ シャム スディル

    Applied Physics Letters   94   093301 - 093301   2009年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Preparation of Double Dye-Layer Structure of Dye-Sensitized Solar Cells from Cocktail Solutions for Harvesting Light in Wide Range of Wavelengths 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   48 ( 2 )   020213 - 020213   2009年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Optical and Electrical Characterization of Poly(3-hexylthiophene-2,5-diyl) Interface with Al and LiF 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   47 ( 2B )   1251 - 1255   2008年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Characterization of Depletion Layer using Photoluminescence Technique 査読有り

    パンディ シャム スディル

    Applied Physics Express   1 ( 2 )   021801 - 021801   2008年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • A comparative study of Al and LiF:Al interfaces with Poly (3-Hexylthiophene) using bias dependent photoluminescence technique 査読有り

    パンディ シャム スディル

    Organic Electronics   9 ( 5 )   790 - 796   2008年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Solvation contribution on the ion exchange in polypyrrole films doped with sulfonated polyaniline 査読有り

    パンディ シャム スディル

    Physical Chemistry and Chemical Physics   2008年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Evidence of Photoluminescence Quenching in Poly (3-hexylthiophene-2,5-diyl)due to injected charge carriers 査読有り

    パンディ シャム スディル

    Synthetic Metals   158 ( 7 )   283 - 286   2008年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Probing TiO2/dye Interface in Dye Sensitized Solar Cells using Surface Potential Measurement 査読有り

    パンディ シャム スディル

    Applied Physics Express   1 ( 10 )   105001 - 105001   2008年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Role of morphology on Photoluminescence quenching and depletion width formed at the interface of Aluminum and Poly(3-Alkylthiophene) 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   2008年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Synthetic and Characterization of Dendritic Poly(L-lysine) containing Porphyrin-Fullerene Moieties 査読有り

    パンディ シャム スディル

    Synthetic Metals   157   311 - 317   2007年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Simultaneous co-immobilization of enzyme and a redox mediator in poly pyrrole film for the fabrication of an amperometric phenol biosensor 査読有り

    パンディ シャム スディル

    Current Applied Physics   5 ( 2 )   184 - 188   2005年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Patternable bi-ionic actuator: an example of new functionality of actuation, folding and unfolding of electrochemical spring 査読有り

    パンディ シャム スディル

    Sensors and Actuators B: Chemical   110 ( 1 )   120 - 124   2005年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Electrochemomechanical Deformation in Conducting Co-polymers containing Pyrrole and Anisidine Moieties 査読有り

    パンディ シャム スディル

    Reactive and Functional Polymers   58   103 - 110   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Development of Amperometric Biosensor Based on Redox Mediator doped Polypyrrole Films 査読有り

    パンディ シャム スディル

    Journal of Applied Polymer Science   93   927 - 933   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Enhanced Electrochemomechanical Deformation of Polyaniline Film by Optimization of pH and Electrolyte Concentration 査読有り

    パンディ シャム スディル

    Trans. Material Research Society   229 ( 3 )   771 - 774   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Conserved Electrochemomechanical Activities of Polypyrrole Films in Complex Buffer Media 査読有り

    パンディ シャム スディル

    Sensors & Actuators B: Chemical   102   142 - 147   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Improved Cathodic Expansions of Electrochemomechanical behavior of Polypyrrole Films Electrodeposited from Aerosol OT Emulsion 査読有り

    パンディ シャム スディル

    Chemistry Letters   33   996 - 996   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Electrochemically Generated Deformation of Polyaniline Film Plasticized with DI-2-butoxy, 2-ethoxy ester of Sulfosuccinic acid 査読有り

    パンディ シャム スディル

    Sensors & Actuators B: Chemical   99   601 - 607   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Electrochemomechanical Deformation studies of Hexacyanoferrate Ion doped Polypyrrole Film 査読有り

    パンディ シャム スディル

    Thin Solid Films   467   227 - 230   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Enhanced Electrochemomechanical Activities of Polyaninile Films Towards High pH Region: Contribution of Donnan Effect 査読有り

    パンディ シャム スディル

    Electrochimica Acta   49   4239 - 4244   2004年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Investigation of bi-ionic Contribution for enhancement of Bending Actuation in Polypyrrole Film 査読有り

    パンディ シャム スディル

    Sensors & Actuators B: (Chemical)   89   48 - 52   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Effect of Disorder on the Magnetic States in Pol(3-hexylthiophene) 査読有り

    パンディ シャム スディル

    Synthetic Metals   135-136   343 - 343   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Bi-Ionic Actuators by Polypyrrole Films 査読有り

    パンディ シャム スディル

    Synthetic Metals   135-136   61 - 61   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Enhanced Electrochemomechanical Behaviors of Polyanilne Films by Chloride Concentrations 査読有り

    パンディ シャム スディル

    Chemistry Letters   32 ( 11 )   990 - 990   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photovoltaic Properties in Poly(3-alkylthiophene) based Heterojunction Cells 査読有り

    パンディ シャム スディル

    Current Applied Physics   3 ( 2-3 )   107 - 113   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Proposal of Novel Actuators Using Conducting Polymer Laminates 査読有り

    パンディ シャム スディル

    Synthetic Metals   135-136   135 - 135   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Structure-Property Correlation: Electrochemomechanical Deformation in Polypyrrole Films 査読有り

    パンディ シャム スディル

    Thin Solid Films   438-439   206 - 211   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Immobilization of Glucose Oxidase on to Langmuir Blodgett Films Poly(3-hexylthiophene) 査読有り

    パンディ シャム スディル

    Current Applied Physics   3 ( 2-3 )   275 - 279   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Effect of Film Morphology on the Actuation Behavior in Polypyrrole Films 査読有り

    パンディ シャム スディル

    Synthetic Metals   135-136   59 - 59   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Cyclic-voltammetry and electrochemomechanical deformation of freestanding polypyrrole film in diluted media 査読有り

    パンディ シャム スディル

    Thin Solid Films   438-439   339 - 345   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Temperature Dependence of Rectification and Photovoltaic Effects in Regioregular Poly(3-alkylthiophene) films at the Schottky Junction of Al Electrode 査読有り

    パンディ シャム スディル

    Current Applied Physics   3 ( 2-3 )   321 - 324   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Electrochemomechanical Deformation of Polypyrrole Film in Complex Buffer Media 査読有り

    パンディ シャム スディル

    IPMM CD Book   2003年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    2003年04月  -  2003年04月

  • Cyclic Step-voltammetric Analysis of Cation-driven and Anion-driven Actuuation in Polypyrrole Films 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   41   7532 - 7536   2002年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier Transport Modulated by Film Morphology in Regioregular Poly(3-hexyl thiophene) 査読有り

    パンディ シャム スディル

    Thin Solid Films   393   334 - 342   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier Generation in Regioregular Poly(3-alkylthiophene) Photovoltaic Cells 査読有り

    パンディ シャム スディル

    Synthetic Metals   121   1565 - 1565   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier Mobility in Poly(2-methoxyaniline) 査読有り

    パンディ シャム スディル

    Journal of Applied Polymer Science   79 ( 8 )   1506 - 1512   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photovoltaic Cell using High Mobility Poly(alkylthiophene)s and TiO2 査読有り

    パンディ シャム スディル

    Synthetic Metals   121   1537 - 1537   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Poly(3-Butylthiophene):Conjugated Polymer with Record High TOF Mobility 査読有り

    パンディ シャム スディル

    Synthetic Metals   121   1561 - 1561   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Dispersivity of Carrier Transport related with Molecular Arrangement in Regioregular Poly(3-alkylthiophene) 査読有り

    パンディ シャム スディル

    Synthetic Metals   119   563 - 563   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier Transport in Non-Uniform Field Based on Schottky Cell for the Time-of-Flight Measurements Poly(3-alkyl thiophene) Films 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   40 ( 8 )   4933 - 4937   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Effect of Regioregularity on carrier transport in Poly(alkylthiophene) films with various alkyl chain lengths 査読有り

    パンディ シャム スディル

    Current Applied PhysICW   1 ( 1 )   90 - 97   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier Transport in Regioregular Poly(3-octadecylthiophene) 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   40   5350 - 5356   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier Transport in Processable Poly(3-alktlthiophenes) 査読有り

    パンディ シャム スディル

    Synthetic Metals   121   1563 - 1563   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Morphology Effect on Photocarrier Transport in Regioregular Poly(3-alkylthiphene) Films

    パンディ シャム スディル

    IEICE-OME   ED-2001   41 - 47   2001年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(大学,研究機関等紀要)

  • Thermal Analysis of Chemically Synthesized Polyemeraldine Base 査読有り

    パンディ シャム スディル

    Journal of Applied Polymer Science   75 ( 1 )   145 - 149   2000年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Mechanism of Photocarrier Generation and Transport in Poly(3-alkylthiophene) films 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   39   6309 - 6315   2000年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Effect of Synthetic Impurities on Photocarrier Transport in Poly(3-hexylthiophene) 査読有り

    パンディ シャム スディル

    IEICE Transactions on Electronics   E-83 ( 7 )   1088 - 1093   2000年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Role of Processing Solvents in Photocarrier Transport of Polyaniline 査読有り

    パンディ シャム スディル

    Japqnese Journal of Applied Physics   39 ( 7A )   4445 - 4450   2000年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Regioregularity Vs Regiorandomness: Effect on Photocarrier Transport in Poly(3-hexyl thiophene) 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   39   94 - 97   2000年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Covalent Immobilization of Glucose Oxidase to Poly(o-aminobenzoic acid) for application to Glucose Biosensor 査読有り

    パンディ シャム スディル

    Journal of Applied Polymer Science   78 ( 3 )   662 - 667   2000年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Time of Flight Mobility of Poly(3-alkylthiophenes) 査読有り

    W. Takashima,S. S. Pandey,M. Rikukawa,and K. Kaneto

    Technical report of IEICE   OME99 ( 231 )   29 - 34   2000年04月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(その他学術会議資料等)

  • Photocarrier Transport Phenomena in Polythiophene derivatives 査読有り

    S. Nagamatsu,Shyam S. Pandey,W. Takashima,K. Kaneto

    Pusan-Kyeongnam/Kyushu-Seibu joint International Symposium   14 - 14   1999年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    Seoul (South Korea)   Chinju   1999年11月02日  -  1999年11月03日

  • Carrier Mobility of Conducting Polymers 査読有り

    W. Takashima,S. Nagamatsu,W. Y. Lim,K. Endo,M. Kaneko,S. S. Pandey and K. Kaneto

    Pusan-Kyeongnam/Kyushu-Seibu joint International Symposium   1999年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    South Korea   Chinju   1999年11月02日  -  1999年11月03日

  • Effect of Regiospecificity on Photocarrier Mobility in Poly(3-hexylthiophene 査読有り

    Shyam S. Pandey,S. Nagamatsu,M. Kaneko,W. Takashima,M. Rikukawa and K. Kaneto

    Pusan-Kyeongnam/Kyushu-Seibu joint International Symposium   1999年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    South Korea   Chinju   1999年11月02日  -  1999年11月03日

  • 未入力 査読有り

    M. Kaneko,Shyam S. Pandey,K. Takayama,S. Nagamatsu,Lim W. Y,W. Takashima,K. Kaneto and M. Rikukawa

    未入力   1999年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    South Korea   Chinju   1999年11月02日  -  1999年11月03日

  • Time-of-Flight Photocarrier Mobility in Langmuir-Blodgett Films of Regioregular Poly(3-hexyl thiophene 査読有り

    パンディ シャム スディル

    Japanese Journal of Applied Physics   38   6768 - 6771   1999年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier Mobility in Regioregular Poly(3-hexylthiophene) Studied by Time-of-Flight Method 査読有り

    パンディ シャム スディル

    Japaneswe Journal of Applied Physics   38   1188 - 1190   1999年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • TOF Mobility in Poly(3-hexylthiophene)

    パンディ シャム スディル

    IEICE-OME-99   17   29 - 29   1999年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(大学,研究機関等紀要)

  • Dielectric relaxation in thin conducting polyaniline films 査読有り

    パンディ シャム スディル

    Polymer   39 ( 15 )   3399 - 3404   1998年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Electrical Properties of Metal(Indium)/PolyanilineSchottky devices 査読有り

    パンディ シャム スディル

    Journal of Applied Polymer Science   65   2745 - 2745   1997年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • A.C. Conductivity of Polyemeraldine Base 査読有り

    パンディ シャム スディル

    Journal of Physics Condensed Matter   6   8913 - 8922   1994年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Optical and Electrical Characteristics of the Electrodeposited Polypyrrole Films 査読有り

    パンディ シャム スディル

    Journal of Applied Polymer Science   50 ( 3 )   411 - 411   1993年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Muon studies of conducting polymers 査読有り

    パンディ シャム スディル

    Synthetic Metals   55   677 - 677   1993年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Photocarrier mobility in processable polyaniline 査読有り

    パンディ シャム スディル

    Journal of Applied Physics   74   2109 - 2109   1993年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    1993年04月  -  1993年04月

  • Synthesis and Characterization of Poly(aniline-co-orthoanisidine): A processable conducting polymer 査読有り

    パンディ シャム スディル

    Macromolecules   26   3190 - 3190   1993年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(その他学術会議資料等)

    1993年04月  -  1993年04月

  • Vacuum Deposited Metal/Polyaniline Schottky Diode 査読有り

    パンディ シャム スディル

    Applied Physics Letters   61   1219 - 1219   1992年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

  • Some recent studies on Metal/polyaniline Schottky devices; 査読有り

    パンディ シャム スディル

    Journal of Applied Polymer Science   44 ( 5 )   911 - 911   1992年04月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)

▼全件表示

著書

  • Silver Nanoparticles Based Functional Materials for Antibacterial and Antiviral Applications

    Natarajan A., Singh K.R.B., Singh P., Singh J., Pandey S.S., Singh R.P.(単著)

    ACS Symposium Series  2024年06月 

     詳細を見る

    記述言語:英語

    Bacterial and viral infections are significant global health issues due to the destructive side effects of prolonged use of resistant drugs. In this regard, there is an imperative need for the progress of stable and effective substitutes to traditional antiviral drugs. Silver particles possess potent anti-bacterial and antiviral properties against several pathogens. Silver nanoparticles are the complete package of remarkable properties like, biocompatible, non-toxic, and user-friendly with excellent physical and chemical properties. In recent decades, scientists paid more attention to research related to developing and applying silver nanoparticle-based functional materials. These materials have broad applications, diagonally from sensors to therapeutic agents. The focus of this chapter is to provide a thorough analysis of silver nanoparticles in a different arena. This chapter also explores silver nanoparticles; synthesis, mechanism, and pharmacological application in wound healing, cardiovascular diseases, etc. Due to inadequate awareness about the dosage of the nanoparticles, the toxicity level was increased, leading to severe environmental impact. So, the challenges to be addressed before the commercialization of silver nanoparticles for therapy were discussed in detail.

    DOI: 10.1021/bk-2024-1472.ch006

    Scopus

  • Introduction to MXenes a Next-generation 2D Material

    Singh K.R.B., Thapa S., Singh J., Pandey S.S., Singh R.P.(単著)

    MXenes: Next-Generation 2D Materials: Fundamentals and Applications  2024年01月  ( ISBN:9781119873990

     詳細を見る

    記述言語:英語

    Currently, 2D MXenes are recognized as potential materials because of their miscellaneous chemical composition with excellent physical, electronic, mechanical, magnetic, and thermal properties. The MXenes family has attracted significant research interest in various application fields, for instance, agriculture, environmental remediation, energy storage, and biomedical, due to their excellent features, such as hydrophilicity, activated metallic hydroxide sites, high surface area, biocompatibility, and ease of functionalization. The investigation of biomedical applications is comparatively more escalating than in other fields. Hence, in this book chapter, the synthesis methods, application, characterization techniques, and properties of 2D MXenes are presented, along with the challenges and future opportunities of MXenes.

    DOI: 10.1002/9781119874027.ch1

    Scopus

  • MXenes-based Biosensors

    Thapa S., Singh K.R.B., Natarajan A., Kerry R.G., Singh J., Pandey S.S., Singh R.P.(単著)

    MXenes: Next-Generation 2D Materials: Fundamentals and Applications  2024年01月  ( ISBN:9781119873990

     詳細を見る

    記述言語:英語

    MXenes are recently developed two-dimensional (2D) inorganic compounds with few atomic layers that have exceptional properties, for instance, thermal, magnetic, optical, electronic, and mechanical. Owing to their excellent properties, chemical composition, and layered structure, MXene is one of the prime materials for the advancement of biosensors, among other latest nanomaterials. Fabricating advanced biosensors with high selectivity and sensitivity is one of the most required concerns in biosensors. Numerous nanomaterials, including MXenes, have been introduced to fabricate biosensors for obtaining high selectivity and sensitivity. Therefore, in this book chapter, advanced biosensors were discussed based on 2D MXene for biomedical, agricultural, and environmental remediation applications.

    DOI: 10.1002/9781119874027.ch10

    Scopus

  • MXene-Based Functional Materials as Antibacterial and Antiviral Agents

    Thapa S., Singh K.R.B., Natarajan A., Singh J., Pandey S.S., Singh R.P.(単著)

    ACS Symposium Series  2023年12月 

     詳細を見る

    記述言語:英語

    Recent Progress in Nanomaterials with Antiviral/Antimicrobial Functionalities. Nanomaterials play a key role in treating various infectious diseases owing to their antibacterial characteristics. Nowadays the development of novel functional materials with antibacterial or antiviral surfaces that inhibit microbial adherence or destroy the bacteria has received significant attention. Volume one of this book presents design strategies, classifications and synthesis methods for a variety of functional materials; describes techniques for antibacterial and antiviral detection and activity measurement; and reviews relevant surface protection mechanisms. The audience for this book includes those working in a wide variety of disciplines, including chemistry, biology, materials science, nanotechnology, and forensic and pharmaceutical sciences.

    DOI: 10.1021/bk-2023-1458.ch011

    Scopus

口頭発表・ポスター発表等

  • Investigation on the Effect of Lattice Strain on the Piezoelectric Response of ZnO-based Nanogenerators.Nisarg Purabiarao Hirens Received the Best Present Award for this Research presentation!

    Nisarg Hirens Purabiarao, Siddhi Ramer, Vipul Singh, I.A. Palani, Shyam S Pandey

    International Conference on New Materials for Industry and Medicine (NMIM-24), India from January 30-31, 2024  2024年01月  DST-SERB-CSIR, India

     詳細を見る

    開催期間: 2024年01月30日 - 2024年01月31日   記述言語:英語   開催地:PGSR, Coimbatore,Tamilnadu, India   国名:インド  

    Nisarg Purabiarao Hirens Received the Best Present Award for this Research presentation.

  • Organic field effect transistors as transducer for non-enzymatic glucose sensing through extended-gate system based on CuO/MXenes nanocomposite. Harshita Rai Received the Best Presentation Award for this Excellent Work and Research Presentation.

    Harshita Rai, Kshitij RB Singh, Safalmani Pradhan, Shyam S. Pandey

    International Conference on New Materials for Industry and Medicine (NMIM-24), India from January 30-31, 2024  2024年01月  DST-SERB-CSIR, India

     詳細を見る

    開催期間: 2024年01月30日 - 2024年01月31日   記述言語:英語   開催地:PGSR, Coimbatore,Tamilnadu, India   国名:インド  

    Harshita Rai Received the Best Presentation Award for this Excellent Work and Research Presentation.

  • Investigating the role of dye molecular structure on the performance of the solid-state dye-sensitized solar cells; This presentation received Best Presentation Award (Bronze Medal) in Engineering & Technology Catagory!

    Yuki Kurokawa, Shyam S. Pandey

    11th International Symposium on Applied Engineering and Sciences (SAES-2023) 20th – 21st Nov 2023, UNIVERSITI PUTRA MALAYSIA, SERDANG SELANGOR, MALAYSIA  2023年11月  UPM Malaysia

     詳細を見る

    開催期間: 2023年11月20日 - 2023年11月21日   記述言語:英語   開催地:UPM, Malaysia   国名:マレーシア  

    Yuki Kurokawa Received the Best Presentation Award (Bronze Medal) for this Research Presentation.

  • Design of a Novel PET-Controlled NIR-Sensitive Unsymmetrical Squaraine Dye and its Interaction with BSA; This paper received best presentation award (Gold Medal) under Biomedical Science Catagory!

    Shekhar Gupta, Priyanka, Shyam S. Pandey, Tamaki Kato

    11th International Symposium on Applied Engineering and Sciences (SAES-2023) 20th – 21st Nov 2023, UNIVERSITI PUTRA MALAYSIA, SERDANG SELANGOR, MALAYSIA  2023年11月  UPM Malaysia

     詳細を見る

    開催期間: 2023年11月20日 - 2023年11月21日   記述言語:英語   開催地:UPM, Malaysia   国名:マレーシア  

    Shekhar Gupta Received the Best Presentation Award (Gold Medal) for his Excellent Research Work and Presentation.

  • Bistable Resistive Switches fabricated by Unidirectional Floating Film Transfer Method

    Shubham Sharma, Nikita Kumari, Shyam S. Pandey

    The 30th International Workshop on Active Matrix Flat Panel Displays and Devices (AM-FPD-23), Ryukoku University Avanti Kyoto Hall Kyoto, Japan, July 4-7, 2023.  2023年07月 

     詳細を見る

    開催期間: 2023年07月04日 - 2023年07月07日   記述言語:英語   開催地:Ryukoku University Avanti Kyoto Hall, Kyoto   国名:日本国  

    Shubham Sharma Received the Best Presentation Award for this Research Presentation.

  • Controlling Catalytic Activity of Pt-Free Counter Electrode Based on Conducting Polymer Thin Films for Dye-Sensitized Solar Cel

    Yuki Kurokawa, Takehito Kato, Shyam S. Pandey

    60th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, Kitakyushu, July 1, 2023.,   2023年03月  Japan Electrochemical Society

     詳細を見る

    開催期間: 2023年03月01日   記述言語:日本語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

    Yuki Kurokawa Received the Best Presentation Award for this Research Presented

  • Amicable Approaches for Immense Solar Energy Harvesting by Dye-Sensitized Solar Cells

    Shyam S. Pandey

    International Conference on Advances in Science and Technology for Sustainable Development Goals (IC-ASTSDGs-2024), AKS University, Satna, MP, India from March 11-12, 2024  2024年03月 

     詳細を見る

    開催期間: 2024年03月11日 - 2024年03月12日   記述言語:英語   開催地:AKS University, Satna, MP, India   国名:インド  

  • Tailoring the Functional Materials and & Device Architecture for Low-Cost and Immense Solar Energy Harvesting 招待有り

    Shyam S. Pandey

    International Conference on New Materials for Industry and Medicine (NMIM-24), India from January 30-31, 2024  2024年01月  DST-SERB-CSIR, India

     詳細を見る

    開催期間: 2024年01月30日 - 2024年01月31日   記述言語:英語   開催地:PGSR, Coimbatore,Tamilnadu, India   国名:インド  

  • Near-Infrared Fluorescent Squaraine-Peptide Conjugates for Enhanced Detection of Chymotrypsin Activity

    Shekhar Gupta, Priyanka, Sai Kiran Mavletti, Shyam S. Pandey, Tamaki Kato

    International Conference on New Materials for Industry and Medicine (NMIM-24), India from January 30-31, 2024  2024年01月  DST-SERB-CSIR, India

     詳細を見る

    開催期間: 2024年01月30日 - 2024年01月31日   記述言語:英語   開催地:PGSR, Coimbatore,Tamilnadu, India   国名:インド  

  • Fabrication of Bifacial Dye-Sensitized Solar Cells (BF-DSSCs) Utilizing Wide Wavelength Photon Harvesting Squaraine Dyes

    Safalmani Pradhan, Shyam S. Pandey

    International Conference on New Materials for Industry and Medicine (NMIM-24), India from January 30-31, 2024  2024年01月  DST-SERB-CSIR, India

     詳細を見る

    開催期間: 2024年01月30日 - 2024年01月31日   記述言語:英語   開催地:PGSR, Coimbatore,Tamilnadu, India   国名:インド  

  • Clarifying the Dominant Role of Molecular Orientation in Conjugated Polymer Thin Films of Organic Conjugated Polymers

    Kumar Vivek Gaurav, Shubham Sharma, Nisarg Hirens Purabiarao, Shyam S. Pandey

    International Conference on New Materials for Industry and Medicine (NMIM-24), India from January 30-31, 2024  2024年01月  DST-SERB-CSIR, India

     詳細を見る

    開催期間: 2024年01月30日 - 2024年01月31日   記述言語:英語   開催地:PGSR, Coimbatore,Tamilnadu, India   国名:インド  

  • Fluorescence Detection of Elastase Enzyme by Peptide-Squaraine Dye Conjugate

    Sai Kiran Mavileti, Galyna Bila, Rostyslav Bilyy Jr, Valentyn Utka, Tetsuya Narimatsu, Tamaki Kato, Rostyslav Bilyy, Shyam S. Pandey

    International Conference on New Materials for Industry and Medicine (NMIM-24), India from January 30-31, 2024  2024年01月  DST-SERB-CSIR, India

     詳細を見る

    開催期間: 2024年01月30日 - 2024年01月31日   記述言語:英語   開催地:PGSR, Coimbatore,Tamilnadu, India   国名:インド  

  • Floating Film Transfer: A Facile and Cost-Effective Approach Towards Uniform Large Area Oriented Thin Films for Organic Electronic Devices

    Shyam S. Pandey

    The 30th International Display Workshop (IDW-2023), Toki Messe Convention Center, Niigata, Japan from December 6-8, 2023.  2023年12月 

     詳細を見る

    開催期間: 2023年12月06日 - 2023年12月08日   記述言語:英語   開催地:Toki Messe Convention Center, Niigata, Japan   国名:日本国  

  • Design, Synthesis and Metal Ion Sensing Novel Utilizing NIR Sensitive Symmetrical Squarine Dye-Probes

    Sushma Thapa, Shekhar Gupta, Safalmani Pradhan, Shyam S. Pandey

    The 8th International Conference on Advanced Nanomaterials and Nanortechnology (ICANN-2023), India Institute of Technology, Guwahati, Asam, India from November 29-December 1, 2023.  2023年11月  Indian Institute of Technology, Guwahati, India

     詳細を見る

    開催期間: 2023年11月29日 - 2023年11月30日   記述言語:英語   開催地:Indian Institute of Technology, Guwahati, India   国名:インド  

  • Unveiling the Bioimaging Potentials of Newly Designed NIR Squaraine Dyes and Dye-Peptide Conjugate: From Bioimaging to in-vivo Neutrophil Elastase Sensing.

    Sai Kiran Mavileti, Galyna Bila, Rostyslav Bilyy Jr, Valentyn Utka, Tetsuya Narimatsu, Tamaki Kato, Rostyslav Bilyy, Shyam S. Pandey

    11th International Symposium on Applied Engineering and Sciences (SAES-2023) 20th – 21st Nov 2023, UNIVERSITI PUTRA MALAYSIA, SERDANG SELANGOR, MALAYSIA  2023年11月  UPM Malaysia

     詳細を見る

    開催期間: 2023年11月20日 - 2023年11月21日   記述言語:英語   開催地:UPM Malaysia   国名:マレーシア  

  • Design, Synthesis and Photophysical Characterization of Multifunctional NIR Dyes for Dye-Sensitized Solar Cells

    Kota Mori, Shyam S. Pandey

    11th International Symposium on Applied Engineering and Sciences (SAES-2023) 20th – 21st Nov 2023, UNIVERSITI PUTRA MALAYSIA, SERDANG SELANGOR, MALAYSIA  2023年11月  UPM Malaysia

     詳細を見る

    開催期間: 2023年11月20日 - 2023年11月21日   記述言語:英語   開催地:UPM, Malaysia   国名:マレーシア  

  • Long-term in vivo Fluorescence Bioimaging using Functionalized Symmetrical Squaraine Dye

    Priyanka, Sai Kiran Mavileti, Shyam S. Pandey, Tamaki Kato

    11th International Symposium on Applied Engineering and Sciences (SAES-2023) 20th – 21st Nov 2023, UNIVERSITI PUTRA MALAYSIA, SERDANG SELANGOR, MALAYSIA  2023年11月  UPM Malaysia

     詳細を見る

    開催期間: 2023年11月20日 - 2023年11月21日   記述言語:英語   開催地:UPM, Malaysia   国名:マレーシア  

  • Transparent Dye-Sensitized Solar Cells Utilizing Judiciously Implemented Visible and NIR Dyes for Power Harvesting Windows

    Pritha Roy, Yuki Kurokawa, Shyam S. Pandey

    11th International Symposium on Applied Engineering and Sciences (SAES-2023) 20th – 21st Nov 2023, UNIVERSITI PUTRA MALAYSIA, SERDANG SELANGOR, MALAYSIA  2023年11月  UPM Malaysia

     詳細を見る

    開催期間: 2023年11月20日 - 2023年11月21日   記述言語:英語   開催地:UPM, Malaysia   国名:マレーシア  

  • Combined Theoretical and Experimental Approaches Towards the synthesis of NIR Photon Harvesting Sensitizers for their Application in Dye Sensitized Solar Cells

    Safalmani Pradhan, Shyam S. Pandey

    11th International Symposium on Applied Engineering and Sciences (SAES-2023) 20th – 21st Nov 2023, UNIVERSITI PUTRA MALAYSIA, SERDANG SELANGOR, MALAYSIA  2023年11月  UPM Malaysia

     詳細を見る

    開催期間: 2023年11月20日 - 2023年11月21日   記述言語:英語   開催地:UPM, Malaysia   国名:マレーシア  

  • Implications of the molecular structure of sensitizing dyes on the performance of the solid-state dye-sensitized solar cells

    Yuki KUROKAWA, Shyam Sudhir PANDEY

    The 33rd Annual Meeting of Materials Research Society, Yokohama, Japan from November 14-16, 2023  2023年11月  Materials Research Society, Japan

     詳細を見る

    開催期間: 2023年11月14日 - 2023年11月16日   記述言語:日本語   開催地:Yokohama, Japan   国名:日本国  

  • Synthesis and Characterization of Novel NIR Sensitive Dye- Probes for Metal Ion Sensing

    Sushma THAPA, Shekhar GUPTA, Safalmani PRADHAN, Shaym Sudhir PANDEY

    The 33rd Annual Meeting of Materials Research Society, Yokohama, Japan from November 14-16, 2023  2023年11月  Materials Research Society, Japan

     詳細を見る

    開催期間: 2023年11月14日 - 2023年11月16日   記述言語:英語   開催地:Yokohama, Japan   国名:日本国  

  • Design and Synthesis of Multifunctional NIR Squaraine Dyes for Dye-sensitized Solar Cells

    Kota MORI, Shyam Sudhir PANDEY

    The 33rd Annual Meeting of Materials Research Society, Yokohama, Japan from November 14-16, 2023  2023年11月  Materials Research Society, Japan

     詳細を見る

    開催期間: 2023年11月14日 - 2023年11月16日   記述言語:日本語   開催地:Yokohama, Japan   国名:日本国  

  • TRANSPARENT DYE-SENSITIZED SOLAR CELLS UTILIZING VISIBLE AND NIR DYES FOR ENERGY-HARVESTING WINDOWS 招待有り

    Shyam S. Pandey

    International Solar Energy Society Solar World Congress (SWC)-2023, New Delhi, India from October 30-November 4, 2023.  2023年10月  International Solar Energy Society

     詳細を見る

    開催期間: 2023年10月30日 - 2023年11月04日   記述言語:英語   開催地:Ashoka Hotel, New Delhi, India   国名:インド  

  • ENHANCING THE POTENTIALITY OF DSSCs UTILIZING NIR DYES: TRANSPARENT AND BIFACIAL DSSCs

    Shyam S. Pandey

    The 22nd International Discussion & Conference on Nano Interface Controlled Electronic Devices (IDC-NICE 2023) Oct. 11~13, 2023 I-site Namba, Osaka Metropolitan Univ., Osaka, Japan  2023年10月 

     詳細を見る

    開催期間: 2023年10月11日 - 2023年10月13日   記述言語:英語   開催地:I-site Namba, Osaka Metropolitan Univ., Osaka, Japan   国名:日本国  

  • Implication of Extending the π-Conjugation of Sensitizing Dyes on their Photovoltaic Performance Aiming Towards NIR Photon Harvesting

    〇Safalmani Pradhan, Shyam S. Pandey

    The 84th, Japan Society of Applied Physics Autumn Academic Conference, Kumamoto Castle Hall Kumamoto September 19-23, 2023  2023年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2023年09月19日 - 2023年09月23日   記述言語:英語   開催地:Kumamoto Castle Hall Kumamoto   国名:日本国  

  • Utilizing the extended-gate OFETs for non-enzymatic glucose sensing based on CuO/MXenes nanocomposite

    Harshita Rai, Kshitij RB Singh, Safalmani Pradhan, Shyam S. Pandey

    The 84th, Japan Society of Applied Physics Autumn Academic Conference, Kumamoto Castle Hall Kumamoto September 19-23, 2023.  2023年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2023年09月19日 - 2023年09月23日   記述言語:英語   開催地:Kumamoto Castle Hall Kumamoto   国名:日本国  

  • Efficient detection of malathion pesticide by electrochemical biosensor utilizing biogenically derived copper oxide nanoparticles

    Kshitij RB Singh, Shyam S. Pandey

    The 84th, Japan Society of Applied Physics Autumn Academic Conference, Kumamoto Castle Hall Kumamoto September 19-23, 2023  2023年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2023年09月19日 - 2023年09月23日   記述言語:英語   開催地:Kumamoto Castle Hall Kumamoto   国名:日本国  

  • Facile fabrication and performance evaluation of solid-state dye-sensitized solar cells

    Yuki Kurokawa, Shyam S. Pandey

    The 84th, Japan Society of Applied Physics Autumn Academic Conference, Kumamoto Castle Hall Kumamoto September 19-23, 2023.  2023年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2023年09月19日 - 2023年09月23日   記述言語:英語   開催地:Kumamoto Castle Hall Kumamoto   国名:日本国  

  • Facile, Cost-Effective and Environment-Friendly Approaches Towards Oriented Thin Film Fabrication for Flexible Organic Electronic Devices 招待有り

    Shyam S. Pandey

    THE 7th INTERNATIONAL SYMPOSIUM ON ADVANCED MATERIALS AND NANOTECHNOLOGY 2023 (iSAMN 2023), UPM, Malaysia, Sept. 12-13, 2023.  2023年09月 

     詳細を見る

    開催期間: 2023年09月12日 - 2023年09月13日   記述言語:英語   開催地:UPM, Malaysia   国名:マレーシア  

    This was a Keynote Presentation made by Shyam S. Pandey

  • Synthesis and photophysical characterization of near-infrared dyes with electrolyte function for dye-sensitized solar cells

    Kota Mori, Shyam S. Pandey

    Electrochemical Socciety Japan Fall Meeting, 2023, Ito Campus, Kyushu University, Sept. 11-12, 2023, Fukuoka,  2023年09月  Japan Electrochemical Society

     詳細を見る

    開催期間: 2023年09月11日 - 2023年09月12日   記述言語:英語   開催地:Ito Campus, Kyushu University,   国名:日本国  

  • Biogenically synthesized copper oxide nanoparticles for developing sustainable malathion pesticide biosensor

    〇Singh Kshitij RB, Rajeev Das, Pandey Shyam

    Electrochemical Socciety Japan Fall Meeting, 2023, Ito Campus, Kyushu University, Sept. 11-12, 2023, Fukuoka  2023年09月  Japan Electrochemical Society

     詳細を見る

    開催期間: 2023年09月11日 - 2023年09月12日   記述言語:英語   開催地:Ito Campus, Kyushu University,   国名:日本国  

  • Tunable multistate organic resistive switching memory devices utilizing multi-layer-oriented floating films of conjugated polymers

    Shubham Sharma, Shyam S. Pandey

    2023 International Conference on Solid-State Devices and Materials (SSDM-2023), Nagoya Congress Center, Nagoya Japan from Sept. 5-8, 2023  2023年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2023年09月05日 - 2023年09月08日   記述言語:英語   開催地:Nagoya Congress Center, Nagoya Japan   国名:日本国  

  • Fabrication and Characterization of Oriented P3HT/CdS Hybrid Thin Films Prepared by Friction Transfer for Organic Photovoltaics

    Yuki Kurokawa, Safalmani Pradhan, Takeshi Kato, Shuichi Nagamatsu, Shyam. S. Pandey

    The 30th International Workshop on Active Matrix Flat Panel Displays and Devices (AM-FPD-23), Ryukoku University Avanti Kyoto Hall Kyoto, Japan, July 4-7, 2023.  2023年07月 

     詳細を見る

    開催期間: 2023年07月04日 - 2023年07月07日   記述言語:英語   開催地:Ryukoku University Avanti Kyoto Hall Kyoto, Japan   国名:日本国  

  • Fluorescence Detection of Elastase Enzyme in the Picomole Range by Novel FRET-based Peptide-Squaraine Dye Conjugate

    Sai Kiran Mavileti, Tetsuya Narimatsu, Tamaki Kato, Shyam S. Pandey

    60th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, Kitakyushu, July 1, 2023.,   2023年07月  Japan Electrochemical Society

     詳細を見る

    開催期間: 2023年07月01日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Panchromatic photon harvesting in Dye-sensitized solar cells (DSSCs) utilizing a mixture of visible and near-infrared (NIR) dyes

    Safalmani Pradhan, Shyam S. Pandey

    60th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, Kitakyushu, July 1, 2023.,   2023年07月  Japan Electrochemical Society

     詳細を見る

    開催期間: 2023年07月01日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Photophysical Investigations of Novel Unsymmetrical Squaraine Dyes and their Interaction with Bovine Serum Albumin

    Shekhar Gupta, Shyam S. Pandey, Tamaki Kato

    60th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, Kitakyushu, July 1, 2023.,   2023年07月  Japan Electrochemical Society

     詳細を見る

    開催期間: 2023年07月01日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Effects of Alkyl Chain Length in Symmetrical Squaraine Dyes Flanked with Iodine for Dye-Sensitized Solar Cells.

    Kota Mori, Shyam S Pandey

    60th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, Kitakyushu, July 1, 2023.,   2023年07月  Japan Electrochemical Society

     詳細を見る

    開催期間: 2023年07月01日   記述言語:日本語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • CuO/MXenes nanocomposite-based extended-gate OFETs for non-enzymatic glucose sensing

    Harshita Rai, Kshitij RB Singh, Safalmani Pradhan, Shyam S. Pandey

    60th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, Kitakyushu, July 1, 2023.,   2023年07月  Japan Chemical Society

     詳細を見る

    開催期間: 2023年07月01日   記述言語:英語   開催地:Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Fluorescence Detection Of Elastase Enzyme in the Picomole range by Novel Peptide-Squaraine Dye Conjugate

    Sai Kiran Mavileti, Galyna Bila, Rostyslav Bilyy Jr, Valentyn Utka, Tetsuya Narimatsu, Tamaki Kato, Rostyslav Bilyy, Shyam S. Pandey

    33rd Anniversary World Congress on Biosensors (BIOSENSOR 2023) from June 5-8, 2023, Busan, South Korea.  2023年06月 

     詳細を見る

    開催期間: 2023年06月05日 - 2023年06月08日   記述言語:英語   開催地:Busan, South Korea   国名:北朝鮮=朝鮮民主主義人民共和国  

  • Sustainable approach for bisphenol-A biosensing through immobilization of tyrosinase enzyme on a bioinspired CS@SeO nanocomposites

    Kshitij RB Singh, Pooja Singh, Jay Singh, Shyam S. Pandey

    33rd Anniversary World Congress on Biosensors (BIOSENSOR 2023) from June 5-8, 2023, Busan, South Korea.  2023年06月 

     詳細を見る

    開催期間: 2023年06月05日 - 2023年06月08日   記述言語:英語   開催地:Busan, South Korea   国名:北朝鮮=朝鮮民主主義人民共和国  

  • Facile Fabrication of Large Area Oriented Thin Films of Conjugated Polymers for Organic Electronic Devices 招待有り

    Shyam S. Pandey

    Research discussion on organic electronic devices and materials, Tokyo Institute of Technology Ookayama, Tokyo May 26-27, 2023  2023年05月 

     詳細を見る

    開催期間: 2023年05月26日 - 2023年05月27日   記述言語:英語   開催地:Tokyo Institute of Technology Ookayama, Tokyo   国名:日本国  

  • Facile Fabrication of Large Area Oriented Thin films of Conjugated Polymers and their 2D-Positional Mapping for Anisotropic Organic Electronic Devices

    Shyam S. Pandey, Shubham Sharma, Kumar Vivek Gaurav, Harshita Rai, Shuichi Nagamatsu

    11th International Conference on Materials for Advanced Technologies (ICMAT-2023), Suntec, Singapore from June 26-30, 2023  2023年06月  MRS Singapore

     詳細を見る

    開催期間: 2023年04月26日 - 2023年06月30日   記述言語:英語   開催地:Suntec, Singapore   国名:シンガポール共和国  

  • Symbiotic study of N-bridged metal complexes as electrocatalysts for hydrogen evolution reaction

    Arunadevi Natarajan, M. Swathika, Kshitij RB Singh, Shyam S. Pandey, Jay Singh

    1st International Conference on Green Hydrogen for Global Decarbonization, PDEU, Gujrat, India, Hybrid Mode, March 17-18, 2023  2023年03月  PDEU, Gujrat, India

     詳細を見る

    開催期間: 2023年03月17日 - 2023年03月18日   記述言語:英語   開催地:PDEU, Gujrat, India   国名:インド  

  • Investigating the single step coating of combined hole transport and active layer for the thin-film organic solar cells

    Yuki Kurokawa, Takeshi Kato, Shysm S. Pandey

    Kosen Research International Symposium (KRIS-2023) from March 1-2, 2023, Hitotsubashi Hall, Tokyo, Jap  2023年03月 

     詳細を見る

    開催期間: 2023年03月01日   記述言語:日本語   開催地:Hitotsubashi Hall, Tokyo, Japan   国名:日本国  

  • Chitosan stabilized CuI nanoparticles immobilized with Tyrosinase for the sensitive and selective determination of dopamine 招待有り

    Kshitij RB Singh, Shyam S. Pandey

    International Conference on Nano-pharmaceuticals And Neurological Disorders (ICNAND-2023) HYBRID MODE / February 2-4th, 2023  2023年02月  IGNTU, Amarkantak, MP, India

     詳細を見る

    開催期間: 2023年02月02日 - 2023年02月04日   記述言語:英語   開催地:IGNTU, Amarkantak, MP, India   国名:インド  

  • Prospects & Challenges with Molecular Orientation Control of Organic Semiconductors towards Low-Cost Organic Electronic Devices 招待有り

    Shyam S. Pandey

    2nd International Conference on Emerging Electronics and Automation (E2A-2022), Hybrid Mode, NIT Silchar, Assam, India, December 16-18, 2022  2022年12月  NIT-Silchar, Assam India

     詳細を見る

    開催期間: 2022年12月16日 - 2022年12月18日   記述言語:英語   開催地:NIT-Silchar, Assam India   国名:インド  

  • Efficient Electrochemical Determination of Carbofuran Pesticide Through Sustainable Biosensing Approach

    Kshitij RB Singh, Shyam S. Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • Influence of Thin Film Crystallinity and Molecular Orientation on Charge Carrier Transport in Organic Field Effect Transistors

    °Kumar Vivek Gaurav, Harshita Rai, Shuichi Nagamatsu, Shyam S. Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • D-205 Dye-Adsorbed TiO2-based Photoanodes for Bifacial Dye-Sensitized Solar Cells

    Suraya Shaban, Shyam S. Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • Synthesis, Photophysical Characterization and Binding Interactions of Novel NIR Squaraine Dyes with BSA as Model Protein

    Sai Kiran Mavileti, Shyam S. Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • Novel strategy for designing NIR fluorescence ON probe for wide range dynamic pH sensing via acid induced oligomerization

    °Linjun Tang, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Bioinspired magnetic iron oxide nanoparticles from Argyreia nervosa leaf extract for efficient electrochemical determination of carbofuran pesticide: a sustainable approach

    °Kshitij RB Singh, Shyam S Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Design & Synthesis of FITC-Flanked Novel Squaraine Dye and its Interaction with Bovine Serum Albumin as a Model Protein

    °Shekhar Gupta, Yuki Yamawaki, Safalmani Pradhan, Shyam S. Pandey, Tamaki Kato

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Fluorescence Detection of Elastase Enzyme by Novel Peptide Squaraine Dye Conjugate

    °Sai Kiran Mavileti, Tetsuya Narimatsu, Shekhar Gupta, Tamaki Kato, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Clarifying the Role of Viscosity in Controlling the Extent and Direction of Orientation in Donor-Acceptor type Conjugated Polymers

    °Shubham Sharma, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Role of Solvent Blending in the Preparation of Semiconducting Polymer Films Using Unidirectional Floating Film Transfer Method

    °Jumpei Toyoda, Rishabh Vashist, Manish Pandey, Yongyoon Cho, Hiroaki, Benten, Masakazu Nakamura, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Design and Synthesis of Novel NIR Sensitive Squaraine dyes altering Squaric Acid Core for Dye-Sensitized Solar Cells

    °Safalmani Pradhan, Yuki Kurokawa, Shyam S.Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Facile Fabrication and Characterization of Solid-State Dye-Sensitized Solar Cells Utilizing a Combination of Visible and NIR Dyes

    Visible and NIR Dyes °Yuki Kurokawa, Safalmani Pradhan, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Fabrication and Characterization of Organic Field-Effect Transistors utilizing Oriented Thin films Novel DA Type Conjugated Copolymers: Implications of F Substitution

    °Moulika Desu, Shyam S. Pandey, Guan-Lin Chen, Leeyih Wang

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Design, Synthesis and Photophysical Characterization of Multifunctional NIR Dyes for Dye-Sensitized Solar Cells

    °Kota Mori, Yuki Kurokawa, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Fabrication and Characterization of Bifacial Dye-Sensitized Solar Cells Utilizing Indolene Dye with Iodine and Cobalt-based Redox Electrolytes

    °Suraya Shaban, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Controlling the TiO2-Dye Nanomolecular Interactions for Improving the Photoconversion in Transparent Dye-sensitized Solar Cell

    °Pritha Roy, Yuki Kurokawa, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Influence of Thin Film Crystallinity and Molecular Orientation on Charge Carrier Transport in Organic Field Effect Transistors

    °Kumar Vivek Gaurav, Harshita Rai, Shuichi Nagamatsu, Shyam S. Pandey

    13th International Conference on Nanomolecular Electronics (ICNME-2022), Tokyo Institute of Technology, Tokyo, Japan, December 12-14, 2022  2022年12月  Tokyo Institute of Technology

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Tokyo Institute of Technology   国名:日本国  

  • Effects of Alkyl Chain Length in Symmetrical Squaraine Dyes Flanked with Imidazole for Dye-Sensitized Solar Cells

    Kota Mori, Yuki Kurokawa, Shyam S Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • Parametric Optimization of Thin films of Conjugated Polymer P3HT Fabricated by Dip Coating

    Kumar Vivek Gaurav, Harshita Rai, Shyam S Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • Simple Fabrication and Characterization of Solid-State Dye-Sensitized Solar Cells Using Visible and NIR Dyes as Sensitizer

    Yuki Kurokawa, Safalmani Pradhan, Shyam S. Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • Computational Molecular Design of NIR Dyes having Higher Open-Circuit Voltage for Dye Sensitized Solar Cells

    Safalmani Pradhan, Shyam S. Pandey

    10th International Conference on Applied Engineering and Sciences (SAES-2022), Virtual Online, Kyushu Institute of Technology, December 12-14. 2022  2022年12月  Kyushu Institute of Technology and UPM-Malaysia

     詳細を見る

    開催期間: 2022年12月12日 - 2022年12月14日   記述言語:英語   開催地:Kyushu Institute of Technology   国名:日本国  

  • Controlling the dye adsorption on TiO2 for bifacial dye-sensitized solar cells: Implication of bilayer vs. mixed dyes adsorption

    Suraya Shaban, Ajendra Kumar Vats, Shyam Pandey

    33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), Nagoya, Japan, November 13-17, 2022  2022年11月  Japan Photovoltaic Society

     詳細を見る

    開催期間: 2022年11月13日 - 2022年11月17日   記述言語:英語   開催地:Nagoya International Congress Center   国名:日本国  

  • FACILE FABRICATION AND CHARACTERIZATION OF SOLID-STATE DYE-SENSITIZED SOLAR CELLS UTILIZING IODINE-BASED REDOX ELECTROLYTE

    Yuki Kurokawa, Shyam S. Pandey

    33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), Nagoya, Japan, November 13-17, 2022  2022年11月  Japan Photovoltaic Society

     詳細を見る

    開催期間: 2022年11月13日 - 2022年11月17日   記述言語:英語   開催地:Nagoya International Congress Center   国名:日本国  

  • Electronic Versus Ionic Electroactive Polymers (EAPs) Strain Sensors for Wearable Electronics: A Comparative Study

    Nitin Kumar Singh, Kazuto Takashima, Shyam S. Pandey

    8th International Conference on Sensors Engineering and Electronics Instrumentation Advances (SEIA' 2022), 21-23 September 2022, Corfu Holiday Palace, Corfu, Greece, Hybrid Mode  2022年09月  International Frequency Sensor Association (IFSA)

     詳細を見る

    開催期間: 2022年09月21日 - 2022年09月23日   記述言語:英語   開催地:Corfu Holiday Palace, Corfu, Greece   国名:ギリシャ共和国  

  • Design and photophysical characterization of squaraine dyes with electron-withdrawing groups in squaric acid core for dye-sensitized solar cells

    Safalmani Pradhan, Kurokawa Yuki, Suraya Shaban, Shyam S. Pandey

    The 83rd Autumn Meeting of Japan Applied Physics Society, Tohoku University, Kawauchi Campus, Japan, September 20-23, 2022  2022年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2022年09月20日 - 2022年09月23日   記述言語:英語   開催地:Tohoku University, Kawauchi Campus, Japan   国名:日本国  

  • Investing the vertical distribution of orientation in the thin films of NR-P3HT prepared by the floating film transfer method

    Harshita Rai, Kumar Vivek Gaurav, Shubham Sharma, Shuichi Nagamatsu, Shyam S, Pandey

    The 83rd Autumn Meeting of Japan Applied Physics Society, Tohoku University, Kawauchi Campus, Japan, September 20-23, 2022  2022年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2022年09月20日 - 2022年09月23日   記述言語:英語   開催地:Tohoku University, Kawauchi Campus, Japan   国名:日本国  

  • Investigating the role of hole doping in a p-type semiconducting polymer towards enhancing the field-effect mobility and photosensitivity

    Shubham Sharma, Subhajeet Jana, Rajiv Prakash, Shyam S. Pandey

    The 83rd Autumn Meeting of Japan Applied Physics Society, Tohoku University, Kawauchi Campus, Japan, September 20-23, 2022  2022年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2022年09月20日 - 2022年09月23日   記述言語:英語   開催地:Tohoku University, Kawauchi Campus, Japan   国名:日本国  

  • Enhancement in energy density of electroactive polymerbased wearable devices using silicone rubber and carbon nanotube based composite dielectric film

    Nitin Kumar Singh, Kazuto Takashima, Shyam S. Pandey

    The 83rd Autumn Meeting of Japan Applied Physics Society, Tohoku University, Kawauchi Campus, Japan, September 20-23, 2022  2022年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2022年09月20日 - 2022年09月23日   記述言語:英語   開催地:Tohoku University, Kawauchi Campus, Japan   国名:日本国  

  • Fabrication of P3HT nanofibril thin film by floating thin film transfer method

    Yuuya Tokuchi, Mitsuki Kunihiro, Shyam Pandey, Shuichi Nagamatsu

    The 83rd Autumn Meeting of Japan Applied Physics Society, Tohoku University, Kawauchi Campus, Japan, September 20-23, 2022  2022年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2022年09月20日 - 2022年09月23日   記述言語:日本語   開催地:Tohoku University, Kawauchi Campus, Japan   国名:日本国  

  • Fabrication of stacked ambipolar polymer transistors by floating thin film transfer method

    Kazuki Koga, Shyam Pandey, Shuichi Nagamatsu

    The 83rd Autumn Meeting of Japan Applied Physics Society, Tohoku University, Kawauchi Campus, Japan, September 20-23, 2022  2022年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2022年09月20日 - 2022年09月23日   記述言語:日本語   開催地:Tohoku University, Kawauchi Campus, Japan   国名:日本国  

  • Optimization of electropolymerized conducting polymers as counter electrode for dye sensitized solar cells

    Yuki Kurokawa, Takehito Kato, Pandey Shyam S

    The 83rd Autumn Meeting of Japan Applied Physics Society, Tohoku University, Kawauchi Campus, Japan, September 20-23, 2022  2022年09月  Japan Applied Physics Society

     詳細を見る

    開催期間: 2022年09月20日 - 2022年09月23日   記述言語:日本語   開催地:Tohoku University, Kawauchi Campus, Japan   国名:日本国  

  • Tailoring the Functional Materials and & Device Architecture for Low-Cost Solar Energy Harvesting !

    Shyam S. Pandey

    3rd INTERNATIONAL CONFERENCE on Recent Advances in Materials, Manufacturing and Thermal Engineering (RAMMTE-2022) 8th& 9th July 2022  2022年09月  Delhi Technological University

     詳細を見る

    開催期間: 2022年09月08日 - 2022年09月09日   記述言語:英語   開催地:Delhi Technological University   国名:インド  

  • Fabrication and Characterization of Oriented Thin Films of DPP-based Conjugated Copolymer Prepared by Friction Transfer Method

    Yuki Kurokawa, Ajendra K. Vats, Shuichi Nagamatsu, Shyam S. Pandey

    THE TWENTY-NINTH INTERNATIONAL WORKSHOP ON ACTIVE-MATRIX FLATPANEL DISPLAYS AND DEVICES -TFT TECHNOLOGIES AND FPD MATERIALS-AM-FPD22, Ryukoku University Avanti Kyoto Hall, Kyoto, Japan, July 5-8, 2022  2022年07月  International Society of Functional Thin Film Materials & Devices

     詳細を見る

    開催期間: 2022年07月05日 - 2022年07月08日   記述言語:英語   開催地:Ryukoku University Avanti Kyoto Hall, Kyoto   国名:日本国  

  • Interplay of Viscosities in Controlling The Orientation of Conjugated Polymer Thin Films Fabricated by Floating Film Transfer Method

    Shubham Sharma, Ajendra K. Vats, Shuichi Nagamatsu, Shyam S. Pandey

    THE TWENTY-NINTH INTERNATIONAL WORKSHOP ON ACTIVE-MATRIX FLATPANEL DISPLAYS AND DEVICES -TFT TECHNOLOGIES AND FPD MATERIALS-AM-FPD22, Ryukoku University Avanti Kyoto Hall, Kyoto, Japan, July 5-8, 2022  2022年07月  International Society of Functional Thin Film Materials & Devices

     詳細を見る

    開催期間: 2022年07月05日 - 2022年07月08日   記述言語:英語   開催地:Ryukoku University Avanti Kyoto Hall, Kyoto   国名:日本国  

  • Synthesis, Photophysical Characterization and Binding Interactions of Novel NIR Squaraine Dye with BSA as Model Protein

    Sai Kiran Mavileti, Linjun Tang, Shyam S. Pandey

    59th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura Kitakyushu  2022年07月  Japan Chemical Society

     詳細を見る

    開催期間: 2022年07月02日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Investigation of Conducting Polymers-based Counter Electrodes for Low-cost Dye-sensitized Solar Cells

    Yuki Kurokawa, Suhaidi Shafie, Takehito Kato, Shyam S. Pandey

    59th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura Kitakyushu  2022年07月  Japan Chemical Society

     詳細を見る

    開催期間: 2022年07月02日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • A DPP Framework-based Novel Organic Conjugated Polymer for High Performance OFETs Using Dielectric Surface Modifications

    Moulika Desu, Shubham Sharma, Shuichi Nagamatsu, Kuang-Hao Cheng, Yu-Han Wang, Jyh-Chien Chen, Shyam S. Pandey

    59th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura Kitakyushu  2022年07月  Japan Chemical Society

     詳細を見る

    開催期間: 2022年07月02日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Controlling the magnitude and direction of molecular alignment in the thin films of conjugated polymers using Floating Film transfer method

    Shubham Sharma, Shuichi Nagamatsu, Shyam S. Pande

    59th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura Kitakyushu  2022年07月  Japan Chemical Society

     詳細を見る

    開催期間: 2022年07月02日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Probing the orientation distribution in aligned thin films using dual gate organic field-effect transistors

    Harshita Rai, Shubham Sharma, Shuichi Nagamatsu, Shyam S. Pandey

    59th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura Kitakyushu  2022年07月  Japan Chemical Society

     詳細を見る

    開催期間: 2022年07月02日   記述言語:英語   開催地: Kitakyushu International Conference Center, Kokura   国名:日本国  

  • Electronic Versus Ionic Electroactive Polymers (EAPs) Strain Sensors for Wearable Electronics: A Comparative Study

    Nitin Kumar Singh, Kazuto Takashima, Shyam Sudhir Pandey

    9th International Symposium on Sensor Science The Centre for Advanced Materials and Technologies, Warsaw University of Technology Warsaw, Poland 20 – 22 June 2022  2022年06月  Warsaw University of Technology Warsaw, Poland

     詳細を見る

    開催期間: 2022年06月20日 - 2022年06月22日   記述言語:英語   開催地:Warsaw University of Technology Warsaw, Poland   国名:ポーランド共和国  

  • Nano-Interface Control @t Molecule & Materials for Enhancing the Performance of Cost-Effective Dye-Sensitized Solar Cells 招待有り

    Shyam S. Pandey

    Molecules to material for sustainable development M2M-2022, DDU Gorakhpur University, March 25-26, 2022, Online  2022年03月  DDU Gorakhpur University, India

     詳細を見る

    開催期間: 2022年03月25日 - 2022年03月26日   記述言語:英語   開催地:DDU Gorakhpur University, India, Online Mode   国名:インド  

  • Investigation of Adsorption Behavior of Multiple Dyes on TiO2 for Bifacial Dye-Sensitized Solar Cells

    ○Suraya Shaban, Linjun Tang, Shyam S. Pandey

    The 102 Annual Chemical Society Japan Annual Meeting (2022), March 23-26, Online Virtual Meeting  2022年03月  日本化学会

     詳細を見る

    開催期間: 2022年03月23日 - 2022年03月26日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://confit.atlas.jp/guide/event/csj102nd/top?lang=en

  • Fabrication of large area oriented thin films of novel organic conjugated polymer p(BZC-DPP) by the ribbon-shaped FTM for Organic Electronic Devices

    Moulika Desu, Shubham Sharma, Shuichi Nagamatsu, Kuang-Hao Cheng, Yu-Han Wang, Jyh-Chien Chen, Shyam S. Pandey

    第69回応用物理学会春季学術講演-2022青山学院大学相模原キャンパス東京3月22日ー3月26日  2022年03月 

     詳細を見る

    開催期間: 2022年03月22日 - 2022年03月26日   記述言語:英語   開催地:青山学院大学相模原キャンパス東京   国名:日本国  

    その他リンク: https://confit.atlas.jp/guide/event/jsap2022s/top

  • Fabrication and Characterization of Solid-State Dye-Sensitized Solar Cells Prepared by Natural Drying of Redox Electrolyte

    Yuki Kurokawa, Pandey Shyam S.

    第69回応用物理学会春季学術講演-2022青山学院大学相模原キャンパス東京3月22日ー3月26日  2022年03月 

     詳細を見る

    開催期間: 2022年03月22日 - 2022年03月26日   記述言語:日本語   開催地:青山学院大学相模原キャンパス東京   国名:日本国  

    その他リンク: https://confit.atlas.jp/guide/event/jsap2022s/top

  • istable Resistive Switches Fabricated by Multilayered Coating of Semiconducting Conjugated Polymers

    Shubham Sharma○, Nikita Kumari, Shuichi Nagamatsu, Shyam S. Pandey

    第69回応用物理学会春季学術講演-2022青山学院大学相模原キャンパス東京3月22日ー3月26日  2022年03月 

     詳細を見る

    開催期間: 2022年03月22日 - 2022年03月26日   記述言語:英語   開催地:青山学院大学相模原キャンパス東京   国名:日本国  

    その他リンク: https://confit.atlas.jp/guide/event/jsap2022s/top

  • Facile and Cost-Effective Solar Energy Harvesting by the Next Generation Dye-Sensitized Solar Cells 招待有り

    Shyam S. Pandey

    International Seminar On Advance Research in Molecular & Material Science - 2022 (ARM2S - 2022) March 01 – 02, 2022 Sikkim Manipal Institute of Technology, India  2022年03月  SMIT India

     詳細を見る

    開催期間: 2022年03月01日 - 2022年03月02日   記述言語:英語   開催地:Online Virtual Meeting   国名:インド  

  • Playing with Orientation Control in Conjugated Polymers by Environmentally Benign Techniques for Organic Electronic Devices 招待有り

    Shyam S. Pandey

    32nd Annual General Meeting of MRS-India and 3rd Indian Materials Conclave, Indian Institute of Technology, Madras India, December 20-23, 202  2021年12月  IIT Madras, India

     詳細を見る

    開催期間: 2021年12月20日 - 2021年12月23日   記述言語:英語   開催地:Online Virtual Meeting   国名:インド  

  • Design and Development of NIR Dyes for Immense Solar Energy Harvesting based on Combined Theoretical and Experimental Approaches 招待有り

    Shyam S. Pandey

    7th International Conference on Nanomaterials and Nanotechnology (ICANN2021), Indian Institute of Technology, Guwahati, Assam India, December 14-17, 2021  2021年12月  Indian Institute of Technology, Guwahati, Assam, India

     詳細を見る

    開催期間: 2021年12月14日 - 2021年12月17日   記述言語:英語   開催地:Online Virtual Meeting   国名:インド  

    その他リンク: https://event.iitg.ac.in/icann2021/

  • Investigation on PEDOT-based lowcost counter electrodes for dye sensitized solar cells

    Yuki KUROKAWA, Suhaidi SHAFIE, Takehito KATO, Shyam Sudhir PANDEY

    第31回日本MRS年次大会パシフィコ横浜2021年12月13日―15日オンライン開催  2021年12月  日本MRS

     詳細を見る

    開催期間: 2021年12月13日 - 2021年12月15日   記述言語:日本語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://www.mrs-j.org/meeting2021/jp/

  • Strong Solvatochromism in Novel Double- Squaraine Dye for Sensing Application

    Linjun TANG, Shyam S. PANDEY

    第31回日本MRS年次大会パシフィコ横浜2021年12月13日―15日オンライン開催  2021年12月  日本MRS

     詳細を見る

    開催期間: 2021年12月13日 - 2021年12月15日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://www.mrs-j.org/meeting2021/jp/

  • Photophysical Characterizations of Transparent Dye-Sensitized Solar Cells utilizing Dye-cocktails of Visible and NIR Sensitive Dye

    Pritha ROY, Shyam S. PANDEY

    第31回日本MRS年次大会パシフィコ横浜2021年12月13日―15日オンライン開  2021年12月  日本MRS

     詳細を見る

    開催期間: 2021年12月13日 - 2021年12月15日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://www.mrs-j.org/meeting2021/jp/

  • Fabrication and Characterization of Bifacial Dye- Sensitized Solar Cells using Dye-Bilayer

    Suraya SHABAN, Linjun TANG, Shyam S. PANDE

    第31回日本MRS年次大会パシフィコ横浜2021年12月13日―15日オンライン開催  2021年12月  日本MRS

     詳細を見る

    開催期間: 2021年12月13日 - 2021年12月15日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://www.mrs-j.org/meeting2021/jp/

  • Fabrication and Characterization of Multilayered Oriented Thin Films of Conjugated Polymers by Floating Film Transfer Method

    Shubham SHARMA, Shyam S. PANDEY

    第31回日本MRS年次大会パシフィコ横浜2021年12月13日―15日オンライン開催  2021年12月  日本MRS

     詳細を見る

    開催期間: 2021年12月13日 - 2021年12月15日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    CiNii Article

    その他リンク: https://www.mrs-j.org/meeting2021/jp/

  • Research and Development of Organic Photosensitive Transistors Utilizing Well Oriented Polymer Chains 招待有り

    Vipul SINGH, Nidhi YADAV, Shyam S PANDEY

    第31回日本MRS年次大会パシフィコ横浜2021年12月13日―15日オンライン開催  2021年12月  日本MRS

     詳細を見る

    開催期間: 2021年12月13日 - 2021年12月15日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://www.mrs-j.org/meeting2021/jp/

  • Facile Approaches for Molecular Orientation towards Control of Device Performance in Organic Electronic Devices; 招待有り

    Shyam S. Pandey, Shuichi Nagamatsu

    India-Japan Workshop on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJWBME 2020) Venture Hall, Venture Business Laboratory, Nagoya University, Nagoya, Japan, and online (Zoom), Dec 9-10, 2021  2021年12月  JSPS-DST Bilateral Program-2020

     詳細を見る

    開催期間: 2021年12月09日 - 2021年12月10日   記述言語:英語   開催地:Hybrid mode, Nagoya University, Japan   国名:日本国  

  • Poly(3-hexylthiophene) Film Preparation by Floating Film Transfer Method using Self-seeded Growth Nanofibril Gelled Solution 招待有り

    Shuichi Nagamatsu and SHYAM S. PANDEY

    India-Japan Workshop on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJWBME 2020) Venture Hall, Venture Business Laboratory, Nagoya University, Nagoya, Japan, and online (Zoom), Dec 9-10, 2021  2021年12月  JSPS-DST Bilateral Program-2020

     詳細を見る

    開催期間: 2021年12月09日 - 2021年12月10日   記述言語:英語   開催地:Hybrid mode, Nagoya University, Japan   国名:日本国  

  • Investigation on Molecular Orientation of BZC-DPP based Organic Conjugated Polymer for Organic Electronic Device

    Moulika Desu, Shubham Sharma, Kuang-Hao Cheng, Yu-Han Wang, Jyh-Chien Chen, Shyam S. Pandey

    9th International Symposium on Applied Engineering and Sciences (SAES2021) 5th–8th December 2021 | MALAYSIA UNIVERSITI PUTRA MALAYSIA, SERDANG, SELANGOR,  2021年12月  University Putra Malaysia

     詳細を見る

    開催期間: 2021年12月05日 - 2021年12月08日   記述言語:英語   開催地:Online Virtual Meeting   国名:マレーシア  

    その他リンク: https://saes2021.upm.edu.my/

  • Development of Novel NIR Fluorescent Probe for the Sensing Applications under High Acidic Media

    Linjun Tang, Shyam S. Pandey

    9th International Symposium on Applied Engineering and Sciences (SAES2021) 5th–8th December 2021 | MALAYSIA UNIVERSITI PUTRA MALAYSIA, SERDANG, SELANGOR,  2021年12月  University Putra Malaysia

     詳細を見る

    開催期間: 2021年12月05日 - 2021年12月08日   記述言語:英語   国名:マレーシア  

    その他リンク: https://saes2021.upm.edu.my/

  • Facile Fabrication and Characterization of Solid-State Dye-Sensitized Solar Cells Utilizing Iodine-Based Redox Electrolyte

    Yuki Kurokawa, Shyam S. Pandey

    9th International Symposium on Applied Engineering and Sciences (SAES2021) 5th–8th December 2021 | MALAYSIA UNIVERSITI PUTRA MALAYSIA, SERDANG, SELANGOR,  2021年12月  University Putra Malaysia

     詳細を見る

    開催期間: 2021年12月05日 - 2021年12月08日   記述言語:英語   国名:マレーシア  

    その他リンク: https://saes2021.upm.edu.my/

  • Influence of Mixed Dye and Bilayer Dye Adsorption on The Performance of Bifacial Dye-Sensitized Solar Cells

    Suraya Shaban, Shyam S. Pandey

    9th International Symposium on Applied Engineering and Sciences (SAES2021), University Putra Malaysia, December 5-8, 2021, Virtual Online Conference  2021年12月  University Putra Malaysia

     詳細を見る

    開催期間: 2021年12月05日 - 2021年12月08日   記述言語:英語   国名:マレーシア  

    その他リンク: https://saes2021.upm.edu.my/

  • Investigation on Electronic Properties of DPP TTT based Organic Field Effect Transistor

    Shubham Sharma, Ajendra Vats, Shyam S. Pandey

    9th International Symposium on Applied Engineering and Sciences (SAES2021) 5th–8th December 2021 | MALAYSIA UNIVERSITI PUTRA MALAYSIA, SERDANG, SELANGOR,  2021年12月  University Putra Malaysia

     詳細を見る

    開催期間: 2021年12月05日 - 2021年12月08日   記述言語:英語   開催地:Online Virtual Meeting   国名:マレーシア  

    その他リンク: https://saes2021.upm.edu.my/

  • Sensing and Actuation: Moving from Soft & Wet in Liquid to Soft, Flexible & Dry in Solid-State 招待有り

    Shyam S. Pandey

    Active Materials and Soft Mechatronics 2021 (AMSM2021), Toyohashi University, Japan, November 10-12, 2021, Online Conference  2021年11月 

     詳細を見る

    開催期間: 2021年11月10日 - 2021年11月12日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://www.life.kyutech.ac.jp/~amsm2021/invited/

  • CONTROL OF MOLECULAR ORIENTATIONS BY ENVIRONMENTALLY BENIGN TECHNIQUES AND THEIR VISUALIZATION FOR ORGANIC ELECTRONIC DEVICES 招待有り

    Shyam S. Pandey

    20th International Discussion and Conference on Nanointerface Controlled Electronic Devices (IDC-NICE 2021), South Korea, Online Meeting, Oct 6-7, 2021  2021年10月 

     詳細を見る

    開催期間: 2021年10月06日 - 2021年10月07日   記述言語:英語   開催地:Online Virtual Meeting   国名:北朝鮮=朝鮮民主主義人民共和国  

  • Fabrication of Large Area Oriented Thin Films by Floating Film Transfer and their 2D Profiling for Organic Electronic Devices 招待有り

    Shyam S. Pandey

    The 11th International Conference on Flexible and Printed Electronics (ICFPE-2021), Online Meeting, Sep 27-29, 2021  2021年09月 

     詳細を見る

    開催期間: 2021年09月27日 - 2021年09月29日   記述言語:英語   開催地:Online Virtual Meeting   国名:日本国  

    その他リンク: https://www.eng.niigata-u.ac.jp/~icfpe/

  • Optimization of PEDOT counter electrodes for dye sensitized solar cells

    Yuki Kurokawa, Suhaidi Shaffie, Takehito Kato, Pandey Shyam S

    第82回応用物理学会秋季学術講演会20219月10日ー13日オンライン開催  2021年09月 

     詳細を見る

    開催期間: 2021年09月10日 - 2021年09月13日   記述言語:日本語   開催地:Online Virtual Meeting  

  • Enhancement of DPPT-TT Orientation in Unidirectional Floating Films Transfer with Solvent Additives

    Heriyanto Syafutra, Manish Pandey, Yuya Sugita, Hiroaki Benten, Shyam S. Pandey, Masakazu Nakamura

    第82回応用物理学会秋季学術講演会20219月10日ー13日オンライン開催  2021年09月 

     詳細を見る

    開催期間: 2021年09月10日 - 2021年09月13日   記述言語:日本語   開催地:Online Virtual Meeting  

  • Fabrication and Characterization of Transparent Dye Sensitized Solar Cells utilizing Dye-Cocktail of Visible and NIR Dyes

    Pritha Roy, Ajendra Kumar Vats, Linjun Tang, Shyam S. Pandey;

    第82回応用物理学会秋季学術講演会20219月10日ー13日オンライン開催  2021年09月 

     詳細を見る

    開催期間: 2021年09月10日 - 2021年09月13日   記述言語:英語   開催地:Online Virtual Meeting  

  • Investigation of Efficiency Enhancement in Organ ic Inorganic Thin Film Solar Cells based on Titanium (IV) chloride

    Takehito Kato, Yuki Kurokawa, Naoharu Hatsugai, Mitsuzi Ochiai, Zyunichi Asao, Pandey Shyam

    第82回応用物理学会秋季学術講演会20219月10日ー13日オンライン開催  2021年09月 

     詳細を見る

    開催期間: 2021年09月10日 - 2021年09月13日   記述言語:日本語   開催地:Online Virtual Meeting  

  • Investigation of Orientation in the Thin Films of Conjugated Polymer and NIR Dye Blends Fabricated by Friction Transfer Method

    Yuki Kurokawa*, Shuichi Nagamatsu and Shyam S. Pandey,

    THE 28th INTERNATIONAL WORKSHOP ON ACTIVE-MATRIX FLATPANEL DISPLAYS AND DEVICES -TFT TECHNOLOGIES AND FPD MATERIALS [AM-FPD21].  Japan Society of Applied Physics and IEEE

     詳細を見る

    開催期間: 2021年06月29日 - 2021年07月02日   記述言語:英語   開催地:Online Virtual Meeting  

  • Assisting Polymer Orientation Using Polymer Blend in FTM

    Heriyanto Syafutra, Manish Pandey, Nikita Kumari, Shyam S. Pandey, Hiroaki Benten, Masakazu Nakamura

    The 8th International Symposium on Organic and Inorganic Electronic Materials and its related Nanotechnologies (EM-NANO-2021), June 1-3, 2021, Online Virtual Conference  Japan Society of Applied Physics

     詳細を見る

    開催期間: 2021年06月01日 - 2021年06月03日   記述言語:英語   開催地:Toyama Prefectural University, Japan  

    CiNii Article

  • Characteristics of Large-Area Floating Films of Oriented Polymeric Semiconductors for Flexible Electronics

    Manish Pandey, Heriyanto Syafutra, Nikita Kumari, Shyam S. Pandey, Masakazu Nakamura

    The 8th International Symposium on Organic and Inorganic Electronic Materials and its related Nanotechnologies (EM-NANO-2021), June 1-3, 2021, Online Virtual Conference  Japan Society of Applied Physics

     詳細を見る

    開催期間: 2021年06月01日 - 2021年06月03日   記述言語:英語   開催地:Toyama Prefectural University, Japan  

  • Computational Molecular Design of NIR Dyes with Varying Anchoring Groups Aiming for Improved Efficiency & Stability

    Shyam S. Pandey, Ajendra Kumar Vats, Shuzi Hayase

    The 8th International Symposium on Organic and Inorganic Electronic Materials and its related Nanotechnologies (EM-NANO-2021), June 1-3, 2021, Online Virtual Conference  Japan Society of Applied Physics

     詳細を見る

    開催期間: 2021年06月01日 - 2021年06月03日   記述言語:英語   開催地:Toyama Prefectural University, Japan  

  • Bifacial Dye-Sensitized Solar Cells Utilizing NIR Sensitive Novel Unsymmetrical Squaraine Dye

    Suraya Shaban, Pritha Roy, Ajendra Kumar Vats, Shyam S. Pandey

    The 8th International Symposium on Organic and Inorganic Electronic Materials and its related Nanotechnologies (EM-NANO-2021), June 1-3, 2021, Online Virtual Conference  Japan Society of Applied Physics

     詳細を見る

    開催期間: 2021年06月01日 - 2021年06月03日   記述言語:英語   開催地:Toyama Prefectural University, Japan  

  • Optimization of Pt-free counter electrodes for dye-sensitized solar cells

    Yuki Kurokawa, Ajendra Kumar Vats, Takehito Kato, Shyam S. Pandey

    The 8th International Symposium on Organic and Inorganic Electronic Materials and its related Nanotechnologies (EM-NANO-2021), June 1-3, 2021, Online Virtual Conference  Japan Society of Applied Physics

     詳細を見る

    開催期間: 2021年06月01日 - 2021年06月03日   記述言語:英語   開催地:Toyama Prefectural University, Japan  

  • Fatigue life prediction of electroactive polymer strain sensor

    Nitin Kumar Singh, Kazuto Takashima, Shyam Sudhir Pandey

    SPIE Smart Structure + Non-destructive evaluation-2021  SPIE, USA

     詳細を見る

    開催期間: 2021年03月22日 - 2021年03月27日   記述言語:英語   開催地:Online, Sandiego, California, USA  

    Electroactive polymers strain sensors bear a great potentiality in the area of soft robotics, wearable devices, and fitness
    industries. A small initial defect present in such sensor may grow to a critical size during contraction and relaxation
    cycles leading to mechanical failure, therefore, prediction of fatigue life is inevitable. The crack growth approach is
    one of the amicable ways to estimate the fatigue life considering parameters like tear energy, crack geometry, and
    power law. In this work, crack growth approach based on power law is being proposed to predict fatigue life utilizing
    conducting and stretchable freestanding films consisted of SEBS rubber and dodecyl benzenesulfonic acid (DBSA)
    doped polyaniline composite. Utilizing this crack growth model for the prediction of fatigue life exhibited that such
    films can sustain more than a million cycles even at a large value of deformation.

    CiNii Article

  • Semitransparent Dye-Sensitized Solar Cells using Novel Blue- Colored Unsymmetrical Squaraine Dyes.

    Pritha Roy, Ajendra Kumar Vats, Shyam S. Pandey

    日本化学会第100春季年会(2020)  Chemical Society of Japan

     詳細を見る

    開催期間: 2020年03月22日 - 2020年03月25日   記述言語:英語   開催地:東京理科大学 野田キャンパス  

  • Design and Synthesis of Novel NIR Dyes with Phosphonic Acid based Anchoring Groups for Dye-Sensitized Solar Cells

    Ajendra Kumar Vats, Shyam S. Pandey

    第100春季年会  Chemical Society of Japan

     詳細を見る

    開催期間: 2020年03月22日 - 2020年03月25日   記述言語:英語   開催地:東京理科大学 野田キャンパス東京  

  • 気液界面上に作製したポリチオフェン薄膜における分子配向の研究

    Subhajit Jana, Rajiv Kr. Pandey, Nikita Kumari, Takaaki Manaka, Shyam S. Pandey, Rajiv Prakash

    第67回応用物理学会春季学術講演会  Japan Applied Physics Society

     詳細を見る

    開催期間: 2020年03月12日 - 2020年03月15日   記述言語:英語   開催地:上智大学東京  

    Performance and operational lifetime of organic material based electronic and optoelectronic devices depend on the degree of electron delocalization and its stability. Apart from material properties, another challenge in exploiting the potential of organic electronics is its cost, user-friendly, and ordered/crystalline thin film fabrication techniques. Therefore, a facile deposition technique is highly desired to have precise control over polymer chain ordering along with large area homogeneous thin film fabrication. In this work, the floating-film transfer method (FTM) has been utilized, which provides a large area, highly oriented, crystalline, and smooth polymer thin films. In the case of self-assembled conjugated polymer thin films, the edge of the crystalline domains corresponds to the folded polymeric chains. These folding introduces constraints in the growth of crystalline domains by limiting the successive molecular chain packing as well as causes lattice parameter fluctuation. Therefore, local alignment of polymeric chains in close proximity via - stacking can counterbalance disorders like backbone twisting, chain ends, stacking faults, etc. This work provides a novel technique to fabricate highly edge-on oriented thin solid films of polythiophene and its derivatives.

  • 摩擦転写法により作製した高分子薄膜トランジスタの電荷輸送異方性に及ぼす誘電体界面の影響

    Nikita Kumari, Manish Pandey, Shuichi Nagamatsu, Masakazu NakamuraShuzi Hayase and Shyam S. Pandey

    第67回応用物理学会春季学術講演会  Japan Applied Physics Society

     詳細を見る

    開催期間: 2020年03月12日 - 2020年03月15日   記述言語:英語   開催地:上智大学東京上智  

    Conjugated polymers (CPs) offer adequate freedom to improve the charge transport in their thin films by tuning their chemical structure or processing techniques aiming towards enhancing their crystallinity. Exploiting quasi 1-dimensional nature of CPs is one of the best possible approaches to improve the carrier transport by uniaxially orienting them along the channel of an organic field-effect transistor (OFET). Various solution-based approaches in order to orient the CPs leading to high-performance OFETs has been demonstrated, however, the limitations like need of good solubility of the CPs, surface wettability, pre-aggregation in solution, etc., are the bottleneck to generalize them. Moreover, inevitability of halogenated solvents for film fabrication may also lead to serious health and environmental hazards during large scale production. Friction transfer is a solvent-free processing technique to fabricate large-area oriented polymer thin films and can effectively be utilized to overcome aforementioned challenges. In this work, role of dielectric surface to control the anisotropic charge transport in the OFETs has been extensively investigated and considering the optical and electrical characteristics, a possible transport mechanism has been proposed.

  • FTM による DPP 系高分子混合配向薄膜を用いた異方的 OTFT の作製

    難波 理

    第67回応用物理学会春季学術講演会、上智大学東京  応用物理学会

     詳細を見る

    開催期間: 2020年03月12日 - 2020年03月15日   記述言語:日本語   開催地:上智大学東京  

    分子配向制御技術は導電性高分子の光学的および電気的異方性を引き出すための重要な技術である。我々は新たな分子配向制御技術として浮遊薄膜転写法(FTM)を提案してきた。FTM は,高濃度の導電性高分子溶液を親水性粘性液体面上に展開することで配向薄膜を得る手法である。本研究ではリボン状FTM を用いて,poly[2,5-(2-octyldodecyl)-3,6-diiketopyrrolo pyrrole-alt-5,5-(2,5-di(thien-2-yl)thieno[3,2-b]thiophene)](DPP2T-TT)を用いた異方的OTFTの作製および,poly(9,9-dioctylfluorene)(PF8)を混合することによるDPP2T-TT配向膜の成膜性,配向性の向上を試みた

  • Impact of the Regiospecificity on the Molecular Self Assembly in P3HT Thin Films Prepared by FTM Shubham Sharma, Nikita Kumari, Yoshito Ando, Shuichi Nagamatsu, Shyam S. Pandey

    Shubham Sharma

    6th International Conference on Advanced Nanomaterials and Nanotechnology (ICANN2019  Indian Institute of Technology

     詳細を見る

    開催期間: 2019年12月18日 - 2019年12月21日   記述言語:英語   開催地:Indian Institute of Technology, Guwahati, Assam, India  

  • Development of NIR Dyes with Varying Anchoring Groups with Combined Theoretical and Experimental Approaches Ajendra Kumar Vats, Shuzi Hayase, Syam S. Pandey

    Shyam S. Pandey

    29th Annual Meeting of Materials Research Society, Japan  MRS-Japan

     詳細を見る

    開催期間: 2019年11月27日 - 2019年11月29日   記述言語:英語   開催地:Pacific Yokohama, Japan  

  • Thickness Optimization of Screen-printed TiO2 Photoanode for Dye-Sensitized Solar Cells Ali Khalifa, Suhaidi Shafie, WZW Hasan, H. N. Lim, M. Rusop, Shyam S. Pandey, Hussein. A. AlSultan

    Ali Khalifa

    7th International Symposium on Applied Engineering and Sciences (SAES2019)   Universiti Putra Malaysia

     詳細を見る

    開催期間: 2019年11月11日 - 2019年11月12日   記述言語:英語   開催地:UNIVERSITI PUTRA MALAYSIA, SERDANG, SELANGOR  

  • Effect of Dye Loading Time to The Efficiency of Dye-Sensitized Solar Cell Suraya Shaban, Suhaidi Shaffie, Mohd Amrallah Mustafa, Pandey Shyam Sudhir

    Suraya Shaban

    7th International Symposium on Applied Engineering and Sciences (SAES2019)   Universiti Putra Malaysia

     詳細を見る

    開催期間: 2019年11月11日 - 2019年11月12日   記述言語:英語   開催地:UNIVERSITI PUTRA MALAYSIA, SERDANG, SELANGOR  

  • Investigation of Molecular Self-Assembly in Oriented Thin Films of RR-P3HT Prepared by Ribbon-Shaped FTM Shubham Sharma, Nikita Kumari, Shuichi Nagamatsu, Shyam S. Pandey

    Shubham Sharma

    7th International Symposium on Applied Engineering and Sciences (SAES2019)   Universiti Putra Malaysia

     詳細を見る

    開催期間: 2019年11月11日 - 2019年11月12日   記述言語:英語   開催地:UNIVERSITI PUTRA MALAYSIA, SERDANG, SELANGOR  

  • A Comparative Study Related to Nature of Interface between Metal and Conjugated Polymer: Role of Molecular Ordering Nidhi Yadav, Nikita. Kumari, Shyam Pandey, Vipul. Singh

    Nidhi Yadav

    32nd International Microprocesses and Nanotechnology Conference (MNC-2019  Japan Applied Physics Society

     詳細を見る

    開催期間: 2019年10月28日 - 2019年10月31日   記述言語:英語   開催地: International Conference Center Hiroshima, Hiroshima, Japan  

  • Design of NIR Dyes with Varying Anchoring Groups Aiming Towards High Stability and Photoconversion Efficiency Ajendra Kumar Vats, Gaurav Kapil, Shuzi Hayase, Shyam S. Pandey

    Shyam S. Pandey

    SPIE-Photonics West-2019 

     詳細を見る

    開催期間: 2019年08月11日 - 2019年08月15日   記述言語:英語   開催地:San Diego Convention Center, San Diego, CA, US  

  • Synthesis and Photovoltaic Characterization of NIR Sensitive Squaraine Dyes with Extended pi conjugation for Dye-Sensitized Solar Cells, Ajendra Kumar Vats, Gaurav Kapil, Shuzi Hayase, Shyam S. Pandey

    Ajendra Kumar Vats

    56th Kyushu Branch Chemical Society Meeting,   Chemical Society of Japan

     詳細を見る

    開催期間: 2019年07月13日   記述言語:英語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu  

  • Alkyl-Chain Length Dependent Optical and Electronic Properties of Donor-Acceptor Copolymers; Nikita KUMARI, Manish PANDEY, Rakesh K GUPTA, Ajendra K VATS, Shuichi NAGAMATSU, Shuzi HAYASE, Shyam S PANDEY

    Nikita KUMARI

    10th International Conference on Materials for Advanced Technologies (ICMAT-2019)  MRS-Singapore

     詳細を見る

    開催期間: 2019年06月23日 - 2019年06月28日   記述言語:英語   開催地:Marina Bay Sands, Singapore  

  • Sensitization of Wide Band Gap Oxide Semiconductors by NIR Dyes with Varying Anchoring Groups for Molecular Photovoltaics; Ajendra Kumar VATS, Gaurav KAPIL, Shuzi HAYASE, Shyam S. PANDEY

    Ajendra Kumar Vats

    10th International Conference on Materials for Advanced Technologies (ICMAT-2019)  MRS-Singapore

     詳細を見る

    開催期間: 2019年06月23日 - 2019年06月28日   記述言語:英語   開催地:Marina Bay Sands, Singapore  

  • Molecular Orientation and 2D Positional Mapping: A Facile and Powerful Approach for Organic Electronic Devices Nikita Kumari, Shuichi Nagamatsu, Shyam S. Pandey

    Shyam S. Pandey

    7th Intentional Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2019) 

     詳細を見る

    開催期間: 2019年06月19日 - 2019年06月22日   記述言語:英語   開催地:AICS (Nagano (Engineering) Campus, Shinshu University  

  • Implication of the Nature of Anchoring groups on Photophysical Behaviour of NIR Dyes for Dye-Sensitized Solar Cells; Ajendra Kumar Vats, Shuzi Hayase, Shyam S. Pandey

    Ajendra Kumar Vats

    7th Intentional Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2019) 

     詳細を見る

    開催期間: 2019年06月19日 - 2019年06月22日   記述言語:英語   開催地:AICS (Nagano (Engineering) Campus, Shinshu University  

  • Synthesis and Characterization of NIR Dyes with Varying Anchoring Groups for Dye-Sensitized Solar cells ○VATS Ajendra Kumar, PRADHAN Anusha, KAPIL Gaurav, HAYASE Shuzi, PANDEY Shyam S

    Ajendra Kumar Vats

    99th Spring Meeting of Japan Chemical Society  Chemical Society of Japan

     詳細を見る

    開催期間: 2019年03月16日 - 2019年03月19日   記述言語:英語   開催地:Konan University, Okamoto campus, Hyogo  

  • Computational Molecular Design of NIR Dyes with Varying Anchoring Groups for Dye-Sensitized Solar Cells ○Shyam S. Pandey, Ajendra Kumar Vats, Anusha Pradhan, Shuzi Hayase

    Shyam S. Pandey

    The 66th Japan Applied Physics Society, Spring Meeting  Japan Applied Physics Society

     詳細を見る

    開催期間: 2019年03月09日 - 2019年03月12日   記述言語:英語   開催地:Tokyo Institute of Technology, Okayama, Tokyo  

  • Improvement in the Performance of Organic Schottky Diodes through Combined Effect of Charge Double Layer and Oxide Interlayer Nikita Kumari, Manish Pandey, Shuichi Nagamatsu, Shuzi Hayase, Shyam S. Pandey

    Nikita Kumari

    The 66th Japan Applied Physics Society, Spring Meeting  Japan Applied Physics Society

     詳細を見る

    開催期間: 2019年03月09日 - 2019年03月12日   記述言語:英語   開催地:Tokyo Institute of Technology, Okayama, Tokyo  

  • Design and Development of Novel Blue Colored Sensitizers for Efficient Cobalt Redox Shuttle Based Dye Sensitized Solar Cells Anusha Pradhan, Ajendra Kumar Vats, Shuzi Hayase, Shyam S. Pandey

    Anusha Pradhan

    28th Annual Meeting of MRS-Japan 2018,   MRS Japan

     詳細を見る

    開催期間: 2018年12月18日 - 2018年12月20日   記述言語:英語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu  

  • Computational Molecular Design of Novel NIR Dyes: Implication of Nature of Anchoring Groups on Energetics and Binding to TiO2 Shyam S. Pandey, Ajendra Kumar Vats, Anusha Pradhan, Shuzi Hayase

    Shyam S. Pandey

    28th Annual Meeting of MRS-Japan 2018,   MRS Japan

     詳細を見る

    開催期間: 2018年12月18日 - 2018年12月20日   記述言語:英語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu  

  • Synthesis, Characterization and Adsorption behavior of Unsymmetrical Squaraine Dyes Bearing Varying Anchoring Groups on Mesoporous TiO2 Ajendra kumar Vats, Anusha Pradhan, Shuzi Hayase, Shyam S. Pandey

    Ajendra Kumar Vats

    28th Annual Meeting of MRS-Japan 2018,   MRS Japan

     詳細を見る

    開催期間: 2018年12月18日 - 2018年12月20日   記述言語:英語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu  

  • Anisotropic Optoelectrical Characterization of Conjugated Polymer-GO Nanocomposite Oriented Thin films Fabricated by FTM Atul S. M. Tripathi, Rajiv K. Pandey, Rajiv Prakash, Shyam S. Pandey

    Atul S. M. Tripathi,

    28th Annual Meeting of MRS-Japan 2018,   MRS Japan

     詳細を見る

    開催期間: 2018年12月18日 - 2018年12月20日   記述言語:英語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu  

  • Two-Dimensional Positional Mapping of Macroscopically Oriented Thin Films of Organic Semiconducting Polymers Nikita Kumari, Manish Pandey, Atul SM Tripathi, Shuichi Nagamatsu, Shuzi Hayase, Shyam S. Pandey

    Nikita Kumari

    6th International Symposium on Applied Engineering and Sciences (SAES-2018)  Kyushu Institute of Technology

     詳細を見る

    開催期間: 2018年12月15日 - 2018年12月16日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata Campus  

  • Correlating Molecular Orientation and Device Performance in Organic Electronic Devices based on Oriented Thin Films of Conjugated Polymers Shyam S. Pandey, Manish Pandey, Nikita Kumari, Atul SM Tripathi, Shuichi Nagamatsu, Shuzi Hayase

    Shyam S. Pande

    6th International Symposium on Applied Engineering and Sciences (SAES-2018)  Kyushu Institute of Technology

     詳細を見る

    開催期間: 2018年12月15日 - 2018年12月16日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata Campus  

  • Implication of Dye Molecular Structure on Adsorption Behavior and Anchoring Stability Using NIR Sensitive Squaraine Dyes Ajendra Kumar Vats, Anusha Pradhan, Shuzi, Hayase, Shyam S, Pandey

    Ajendra Kumar Vats

    6th International Symposium on Applied Engineering and Sciences (SAES-2018)  Kyushu Institute of Technology

     詳細を見る

    開催期間: 2018年12月15日 - 2018年12月16日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata Campus  

  • Utilization of Oriented Conjugated Polymer Film Prepared by ribbon shaped FTM Towards Its Application for Flexible Organic Field Effect Transistor Atul S M, Tripathi, Nikita, Kumari, Shuichi, Nagamatsu, Shuzi, Hayase, Shyam S, Pandey

    Atul S M, Tripathi

    6th International Symposium on Applied Engineering and Sciences (SAES-2018)  Kyushu Institute of Technology

     詳細を見る

    開催期間: 2018年12月15日 - 2018年12月16日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata Campus  

  • Synthesis of Blue Sensitizers for Cobalt Redox Shuttle based Dye Sensitized Solar Cells Anusha Pradhan, Shuzi Hayase, Shyam S. Pandey

    Anusha Pradhan

    6th International Symposium on Applied Engineering and Sciences (SAES-2018)  Kyushu Institute of Technology

     詳細を見る

    開催期間: 2018年12月15日 - 2018年12月16日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata Campus  

  • Fabrication of thin films of donor-acceptor conjugated polymers using green solvents

    Shuichi Nagamatsu, Atsuyuki Tomita, Shuuto Nakahara, Shyam S. Pandey, Shuzi Hayase

    79th Autumn Meeting of Japan Applied Physics Society  Japan Applied Physics Society

     詳細を見る

    開催期間: 2018年09月18日 - 2018年09月21日   記述言語:日本語   開催地:Nagoya Congress Center,  

  • Synthesis and photophysical characterization of far-red sensitive squaraine dyes bearing different functional groups for anchoring on mesoporous TiO2

    Ajendra Kumar Vats, Anusha Pradhan, Shuzi Hayase, Shyam S. Pandey

    79th Autumn Meeting of Japan Applied Physics Society  Japan Applied Physics Society

     詳細を見る

    開催期間: 2018年09月18日 - 2018年09月21日   記述言語:英語   開催地:Nagoya Congress Center,  

  • Orientation and alkyl chain length dependence of carrier transport in regioregular Poly (3-alkylthiophenes fabricated by ribbon shaped FTM

    Atul SM Tripathi

    International Conference on Science and Technology of Synthetic Metals (ICSM-2018), BEXCO, BUSAN, SOUTH KOREA  

     詳細を見る

    開催期間: 2018年07月01日 - 2018年07月06日   記述言語:英語  

  • Positional profiling of optical anisotropy in large area oriented conducting polymer films by an ingenious and economical approach

    Nikita Kumari

    International Conference on Science and Technology of Synthetic Metals (ICSM-2018), BEXCO, BUSAN, SOUTH KOREA  

     詳細を見る

    開催期間: 2018年07月01日 - 2018年07月06日   記述言語:英語   開催地:South Korea  

  • Design and Photophysical Characterization of Novel NIR Dyes for DSSCs Using Cobalt Electrolytes

    Anusha Pradhan

    International Conference on Science and Technology of Synthetic Metals (ICSM-2018), BEXCO, BUSAN, SOUTH KOREA  

     詳細を見る

    開催期間: 2018年07月01日 - 2018年07月06日   記述言語:英語  

  • FTM as a Highly Facile Method towards Fabrication of Macroscopically Oriented Thin Films for Anisotropic Electronic Devices

    Shyam S. Pandey

    International Conference on Science and Technology of Synthetic Metals (ICSM-2018), BEXCO, BUSAN, SOUTH KOREA  

     詳細を見る

    開催期間: 2018年07月01日 - 2018年07月06日   記述言語:英語  

  • Combining NIR dyes and Cobalt Electrolyte for High Efficiency Dye Sensitized Solar Cells

    Anusha Pradha

    55th Kyushu Branch Chemical Society, Meeting, Kokura International Conference Center, Kokura, Kitakyushu, Japan 30 Jun 2018 

     詳細を見る

    開催期間: 2018年06月30日   記述言語:英語  

  • Fabrication and Characterization of High Performance Organic Diode

    Nikita Kumari

    55th Kyushu Branch Chemical Society, Meeting, Kokura International Conference Center, Kokura, Kitakyushu, Japan 30 Jun 2018 

     詳細を見る

    開催期間: 2018年06月30日   記述言語:英語  

  • Prediction of Nature of Anchoring Groups on Electron Density Distribution in NIR Dyes by Quantum Chemical Calculations

    Ajendra Kumar Vats

    55th Kyushu Branch Chemical Society, Meeting, Kokura International Conference Center, Kokura, Kitakyushu, Japan 30 Jun 2018 

     詳細を見る

    開催期間: 2018年06月30日   記述言語:英語  

  • Large area orientation dependent charge transport in conjugated polymers prepared by ribbon shaped FTM Method

    Atul SM Tripathi

    55th Kyushu Branch Chemical Society, Meeting, Kokura International Conference Center, Kokura, Kitakyushu, Japan 30 Jun 2018 

     詳細を見る

    開催期間: 2018年06月30日   記述言語:英語  

  • Synthesis and photophysical characterization of positively charged NIR dyes for dye-sensitized solar cells.

    PRADHAN, Anush

    98th Japan Chemical Society Spring Meeting, Nihon daigaku, Funabashi, Tokyo, March 20- 23, 2018 

     詳細を見る

    開催期間: 2018年03月20日 - 2018年03月23日   記述言語:英語  

  • Fabrication of PBTTTC14-OTFT by adhering deposition

    Ishida Masataka

    65th Spring Meeting of Japan Applied Physics Society, Waseda University, Tokyo, March 17-20, 2018 

     詳細を見る

    開催期間: 2018年03月17日 - 2018年03月20日   記述言語:日本語  

  • Large area molecular orientation of conjugated polymers by ribbon-shaped FTM and its implication on anisotropic carrier transport

    Atul Mani Tripathi,

    65th Spring Meeting of Japan Applied Physics Society, Waseda University, Tokyo, March 17-20, 2018 

     詳細を見る

    開催期間: 2018年03月17日 - 2018年03月20日   記述言語:英語  

  • Molecular weight dependence of anisotropy in the oriented films prepared by dynamic FTM

    Shuichi Nagamatsu,

    65th Spring Meeting of Japan Applied Physics Society, Waseda University, Tokyo, March 17-20, 2018 

     詳細を見る

    開催期間: 2018年03月17日 - 2018年03月20日   記述言語:日本語  

  • Synthesis and characterization of positively charged NIR dyes for Cobalt electrolyte based dye-sensitized solar cells

    Anusha Pradhan

    2nd Asia-Pacific Hybrid Organic Photovoltaic Conference (AP-HOPV 2018), Kitakyushu, Japan Jan. 28-30, 2018  

     詳細を見る

    開催期間: 2018年01月28日 - 2018年01月30日   記述言語:英語  

  • Prospects and Challenges with Dye-Sensitized Solar Cells utilizing Far-red Sensitive Dyes and Cobalt Complex Redox Electrolyte

    Shyam S. Pandey

    2nd Asia-Pacific Hybrid Organic Photovoltaic Conference (AP-HOPV 2018), Kitakyushu, Japan Jan. 28-30, 2018 

     詳細を見る

    開催期間: 2018年01月28日 - 2018年01月30日   記述言語:英語  

  • Amicable Solutions for the Charge Recombination by Controlling the Ion Transport in Cobalt Electrolyte based Dye-Sensitized Solar Cells

    Shyam S. Pandey,

    27th Annual Meeting of Materials Research Society, Japan, Yokohama Port Opening Plaza, December 5-7, 2017  MRS-J

     詳細を見る

    開催期間: 2017年12月05日 - 2017年12月07日   記述言語:英語  

  • Floating Film Transfer as an Unique and Cost Effective Method for Fabrication of Macroscopically Oriented Thin Films of Conducting Polymers

    S. S. Pandey

    5th International Symposium on Applied Engineering and Sciences (SAES-2017), Universiti Putra Malaysia, 14th – 15th Nov 2017  Kyushu Institute of Technology and Universiti Putra Malaysia

     詳細を見る

    開催期間: 2017年11月14日 - 2017年11月15日   記述言語:英語  

  • Orientation of Conjugated Polymers by Ribbon Shaped Floating Film Transfer Method: Implication of Nature Polymeric Backbone

    Atul S.M. Tripathi

    78th Autumn Meeting of Japan Applied Physics Society Meeting, Fukuoka International Conference Center, Fukuoka, Sept. 5-8, 2017   Japan Applied Physics Society

     詳細を見る

    開催期間: 2017年09月05日 - 2017年09月08日   記述言語:英語  

  • Preparation of PBTTT-C14 Films by Adsorbing Deposition in Suspension

    Masataka Ishida

    78th Autumn Meeting of Japan Applied Physics Society Meeting, Fukuoka International Conference Center, Fukuoka, Sept. 5-8, 2017  Japan Applied Physics Society

     詳細を見る

    開催期間: 2017年09月05日 - 2017年09月08日   記述言語:日本語  

  • Dye-Sensitized Solar Cells Utilizing Far-Red Sensitive Dye-Cocktail with Cobalt Electrolyte: Influence of Compact Oxide Surface Treatment

    Anusha Pradhan

    78th Autumn Meeting of Japan Applied Physics Society Meeting, Fukuoka International Conference Center, Fukuoka, Sept. 5-8, 201  Japan Applied Physics Society

     詳細を見る

    開催期間: 2017年09月05日 - 2017年09月08日   記述言語:英語  

  • Two-dimensional mapping of orientation of PQT film by FTM

    Shifumi Sadakata

    78th Autumn Meeting of Japan Applied Physics Society Meeting, Fukuoka International Conference Center, Fukuoka, Sept. 5-8, 2017  Japan Applied Physics Society

     詳細を見る

    開催期間: 2017年09月05日 - 2017年09月08日   記述言語:日本語  

  • FTMを用いた導電性高分子の配向マッピング

    貞方 志文

    54th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, Kitakyushu, July 1, 2017 

     詳細を見る

    開催期間: 2017年07月01日   記述言語:日本語  

  • Optoelectronic Characterization of Highly Oriented Conjugated Polymers Prepared by Ribbon-Shaped Dynamic FTM

    Atul SM Tripathi

    54th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, July 1, 2017 

     詳細を見る

    開催期間: 2017年07月01日   記述言語:英語  

  • Novel NIR Dyes in Combination with Cobalt Redox Shuttle for high efficiency dye-sensitized Solar cells

    Anusha PRADHAN

    54th Kyushu Branch Chemical Society Meeting, Kitakyushu International Conference Center, Kokura, July 1, 2017  

     詳細を見る

    開催期間: 2017年07月01日   記述言語:英語  

  • Highly oriented liquid crystalline thiophene polymer fabricated on the hydrophilic liquid substrate for high performance FET

    Manish Pandey

    9th International Conference on Molecular Electronics and Bio-electronics, Kanazawa, Japan, June 26-28, 2017   Japan Applied Physics Society

     詳細を見る

    開催期間: 2017年06月26日 - 2017年06月28日   記述言語:英語   開催地:http://www.mbe.jp/  

  • Implication of Surface Passivation of Substrate and Mesoporous TiO2 for Transparent Conductive Oxide-less Dye-sensitized Solar Cells

    Shyam S. PANDEY

    9th International Conference on Materials for Advanced Technologies (ICMAT-2017), Suntec, Singapore, June 18-13, 2017  Materials Research Society of Singapore

     詳細を見る

    開催期間: 2017年06月18日 - 2017年06月23日   記述言語:英語   開催地:http://icmat2017.mrs.org.sg/  

  • Facile Fabrication and Orientation Analysis of Ribbon-Shaped Floating Thin Films of Conjugated Polymers

    Atul Shankar Mani TRIPATHI

    9th International Conference on Materials for Advanced Technologies (ICMAT-2017), Suntec, Singapore, June 18-13, 2017  Materials Society of Singapore

     詳細を見る

    開催期間: 2017年06月18日 - 2017年06月23日   記述言語:英語   開催地:http://icmat2017.mrs.org.sg/  

  • Effect of Compact Oxide Layer Surface Passivation for Dye-Sensitized Solar Cells utilizing Cobalt Complex based Redox Electrolyte

    Anusha PRADHAN

    9th International Conference on Materials for Advanced Technologies (ICMAT-2017), Suntec, Singapore, June 18-13, 2017   Materials Research Society of Singapore

     詳細を見る

    開催期間: 2017年06月18日 - 2017年06月23日   記述言語:英語   開催地:http://icmat2017.mrs.org.sg/  

  • Static vs. Dynamic FTM: Implication of the Solvent Evaporation on Casting Thin Floating-Films of Polymer Semiconductor

    M. Pandey

    64th Spring Meeting of Japan Applied Physics Society, 

     詳細を見る

    開催期間: 2017年03月14日 - 2017年03月17日   記述言語:英語   開催地:Pacifico Yokohama  

  • P3HT Nanofiber Films by Adhering Deposition in Suspension

    Shuichi Nagamatsu

    64th Spring Meeting of Japan Applied Physics Society, 

     詳細を見る

    開催期間: 2017年03月14日 - 2017年03月17日   記述言語:日本語   開催地: Pacifico Yokohama  

  • Topical mapping of orientation distribution in floating-thin films of conjugated polymers prepared by dynamic FTM

    Shifumi Sadakata

    64th Spring Meeting of Japan Applied Physics Society,  

     詳細を見る

    開催期間: 2017年03月14日 - 2017年03月17日   記述言語:日本語   開催地:Pacifico Yokohama  

  • Ribbon-shaped floating-film of polythiophene-based conjugated polymers for orientation analysis

    A. S. M. Tripathi

    64th Spring Meeting of Japan Applied Physics Society,  

     詳細を見る

    開催期間: 2017年03月14日 - 2017年03月17日   記述言語:英語   開催地:Pacifico Yokohama  

  • Facile Synthesis and Characterization of Sulfur Doped Low Bandgap Bismuth Based Perovskites by Soluble Precursor Route

    Murugan Vigneshwaran

    Asia-Pacific Hybrid and Photo-voltaic Conference (AP-HOPV17),  

     詳細を見る

    開催期間: 2017年02月03日 - 2017年02月04日   記述言語:英語   開催地:Pacific Yokohama, Japan  

  • Orientation Characteristics of Conjugated Polymers on Liquid Substrate

    Wataru TAKASHIMA

    26th Annual Meeting of Materials Research Society Japan,  

     詳細を見る

    開催期間: 2016年12月19日 - 2016年12月22日   記述言語:日本語   開催地:Yokohama Port Opening Plaza, Yokohama, Japan  

  • Molecular Design of far-red Sensitive Squaraine Dyes in-order to Probe the Minimum Energy Barrier for Dye-Regeneration

    Shyam S PANDEY

    26th Annual Meeting of Materials Research Society Japan,  

     詳細を見る

    開催期間: 2016年12月19日 - 2016年12月22日   記述言語:英語   開催地:Yokohama Port Opening Plaza, Yokohama, Japan  

  • Perovskite solar cells. Architecture of hetero interfaces for MAPbX3, CsPbX3, and MASnPbX

    Teresa RIPOLLES

    26th Annual Meeting of Materials Research Society Japan,  

     詳細を見る

    開催期間: 2016年12月19日 - 2016年12月22日   記述言語:英語   開催地:Yokohama Port Opening Plaza, Yokohama, Japan  

  • Novel bismuth based perovskites by sulfur doping for future solar cells

    Vigneshwaran MURUGAN

    26th Annual Meeting of Materials Research Society Japan,  

     詳細を見る

    開催期間: 2016年12月19日 - 2016年12月22日   記述言語:英語   開催地:Yokohama Port Opening Plaza, Yokohama, Japan  

  • Protein Interactions of Far-red Sensitive Symmetrical Squaraine dyes

    Maryala Saikiran

    4th International Symposium on Applied Engineering and Sciences (SAES 2016) 

     詳細を見る

    開催期間: 2016年12月17日 - 2016年12月18日   記述言語:英語   開催地: Kyushu Institute of Technology, Tobata, Kitakyushu, Japan  

  • Theoretical Molecular Design of Novel Near Infra-red Sensitizers for Dye-Sesnitized Solar Cells using Gaussian Program Package

    Shyam S. Pandey

    3rd International Conference on Computational Methods in Engineering and Health Sciences (ICCMEH2016),  

     詳細を見る

    開催期間: 2016年12月17日 - 2016年12月18日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata, Kitakyushu, Japan  

  • Parametric Optimization for Dye-Sesnitized Solar Cells using Far-Red Sensitizing Dyes with Cobalt Electrolyte

    Anusha Pradhan

    4th International Symposium on Applied Engineering and Sciences (SAES 2016)  

     詳細を見る

    開催期間: 2016年12月17日 - 2016年12月18日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata, Kitakyushu, Japan  

  • Orientation Parameters of NR-P3HT macromolecules in a Ribbon-shape Floating-film by Dynamic FTM

    ASM Tripathi

    4th International Symposium on Applied Engineering and Sciences (SAES 2016)  

     詳細を見る

    開催期間: 2016年12月17日 - 2016年12月18日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata, Kitakyushu, Japan  

  • Solvent Driven Performance in Thin Floating Films of Conjugated polymers for Organic Field Effect Transistor: Role of Macroscopic Orientation

    M. Pandey

    4th International Symposium on Applied Engineering and Sciences (SAES 2016)  

     詳細を見る

    開催期間: 2016年12月17日 - 2016年12月18日   記述言語:英語   開催地:Kyushu Institute of Technology, Tobata, Kitakyushu, Japan  

  • Orientation Characteristics in Ribbon Shaped Floating Thin-Films of Conjugated Polymers Prepared by Dynamic FTM

    Atul Tripathi

    12th International Conference on Nano-Molecular Electronics (ICNME-2016),  

     詳細を見る

    開催期間: 2016年12月14日 - 2016年12月16日   記述言語:英語   開催地:Kobe International Conference Center, Kobe Japan,  

  • Develpoment of highly stable non-invasive ammonia sensor for the detection of sub-ppm level concentration of ammonia

    Manish Pandey

    12th International Conference on Nano-Molecular Electronics (ICNME-2016) 

     詳細を見る

    開催期間: 2016年12月14日 - 2016年12月16日   記述言語:英語   開催地:December 14-16, 2016, Kobe International Conference Center, Kobe Japan  

  • Dye-Sensitized Solar Cells utilizing Far-red Sensitive Dyes in Combination with Cobalt Complex based Redox Electrolyte

    Anusha Pradha

    12th International Conference on Nano-Molecular Electronics (ICNME-2016),  

     詳細を見る

    開催期間: 2016年12月14日 - 2016年12月16日   記述言語:英語   開催地:Kobe International Conference Center, Kobe Japan  

  • Perovskite solar cells-Architecture of hetero interfaces

    Shuzi Hayase

    12th International Conference on Nano-Molecular Electronics (ICNME-2016),  

     詳細を見る

    開催期間: 2016年12月14日 - 2016年12月16日   記述言語:英語   開催地:Kobe International Conference Center, Kobe Japan  

  • Efficient Glass Surface Functionalization with Peptide-Fluorophore Conjugate for Protein Bio-Chip Applications

    Shyam S. Pandey,

    12th International Conference on Nano-Molecular Electronics (ICNME-2016),  

     詳細を見る

    開催期間: 2016年12月14日 - 2016年12月16日   記述言語:英語   開催地:Kobe International Conference Center, Kobe Japan  

  • Remarkable enhancement in the carrier transport of thiophene based conjugated polymers: Synergistic influence of orientation and blending

    Manish Pandey

    12th International Conference on Nano-Molecular Electronics (ICNME-2016), 

     詳細を見る

    開催期間: 2016年12月14日 - 2016年12月16日   記述言語:英語   開催地:Kobe International Conference Center, Kobe Japan  

  • Photophysical Characterization and BSA Interaction of Direct Ring Carboxy Functionalized Symmetrical Squaraine Dyes

    Maryala Sai Kiran

    12th International Conference on Nano-Molecular Electronics (ICNME-2016),  

     詳細を見る

    開催期間: 2016年12月14日 - 2016年12月16日   記述言語:英語   開催地:Kobe International Conference Center, Kobe Japan  

  • Sulfur doped lower band gap bismuth based perovskites for future solar cells

    Vigneshwaran Murugan

    第77階応用物理学会秋学術講演会朱鷺メッセ:新潟コンベンションセンタ 

     詳細を見る

    開催期間: 2016年09月13日 - 2016年09月16日   記述言語:英語   開催地:新潟コンベンションセンタ新潟  

  • Ambient Fabrication of Oriented PBTTT-based FET by FTM

    MANISH PANDEY,

    第77階応用物理学会秋学術講演会朱鷺メッセ:新潟コンベンションセンタ 

     詳細を見る

    開催期間: 2016年09月13日 - 2016年09月16日   記述言語:英語   開催地:Toki Messe, Niggata, Japa  

  • Casting of floating films of organic semi-conductors on liquid substrates for anisotropic electronics

    Wataru Takashima

    KJF International Conference on Organic Materials for Electronics and Photonics, 

     詳細を見る

    開催期間: 2016年09月04日 - 2016年09月07日   記述言語:英語   開催地:Fukuoka, Japan  

  • Molecular Design and Photophysical Characterization of Squaraine Dyes with Small Energy Barrier for Electron Injection and Dye Regeneration

    Shyam S. Pandey

    International Union of Materials Research Societies:International Conference on Electronic Materials (IUMRS-ICEM-2016),  

     詳細を見る

    開催期間: 2016年07月04日 - 2016年07月08日   記述言語:英語   開催地:Suntec Singapore  

  • Selection of suitable chloride precursor for bigger crystal growth and reduced defects in lead halide perovskites

    Vigneshwaran Murugan

    International Union of Materials Research Societies:International Conference on Electronic Materials (IUMRS-ICEM-2016),  Suntec Singapore

     詳細を見る

    開催期間: 2016年07月04日 - 2016年07月08日   記述言語:英語  

  • 電子輸送諸材料として酸化亜鉛のペロブスカイト太陽電池への応用

    Kazumasa Noguchi

    53rd Kyushu Branch Chemical Society Meeting,  

     詳細を見る

    開催期間: 2016年07月02日   記述言語:日本語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu, Japan  

  • 色素増感太陽電池を利用した円筒型太陽電池の高効率化

    Hirotaka Suga

    53rd Kyushu Branch Chemical Society Meeting,  

     詳細を見る

    開催期間: 2016年07月02日   記述言語:日本語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu, Japan  

  • 2次元ペロスカイトを利用した光電変換素子

    Kazuya Hideshima

    53rd Kyushu Branch Chemical Society Meeting,  

     詳細を見る

    開催期間: 2016年07月02日   記述言語:日本語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu, Japan,  

  • 円筒型太陽電池の高効率化

    Masayuki Hamauch

    53rd Kyushu Branch Chemical Society Meeting,  

     詳細を見る

    開催期間: 2016年07月02日   記述言語:日本語   開催地:Kitakyushu International Conference Center, Kokura, Kitakyushu, Japan, 2 Jul 2016  

  • Constraints of NIR Dyes for Dye-Sensitized Solar Cells and Its Amicable Solution by Theoretical Molecular Design

    Shyam S. Pandey

    International Conference on Science and Technology of Synthetic Metals (ICSM-2016), 

     詳細を見る

    開催期間: 2016年06月26日 - 2016年07月01日   記述言語:英語   開催地: Baiyuwan International Conference Center, Guangzhou, China  

  • Highly oriented conjugated polymers by FTM method towards anisotropic photonic and electronic devices

    Manish Pandey

    International Conference on Science and Technology of Synthetic Metals (ICSM-2016). 

     詳細を見る

    開催期間: 2016年06月26日 - 2016年07月01日   記述言語:英語   開催地:Baiyuwan International Conference Center, Guangzhou, China.  

  • Enhanced Field Effect Mobility with Blends of Organic Semiconductors

    Shyam S. Pandey

    9th International Symposium on Organic Molecular Electronics (ISOME-2016) 

     詳細を見る

    開催期間: 2016年05月18日 - 2016年05月20日   記述言語:英語   開催地:Niigata, Japan  

  • Synthesis and Characterization of Symmetrical Squaraine Dyes along with their Interaction with BSA

    SAIKIRAN, Maryal

    日本化学会第96春季年会 

     詳細を見る

    開催期間: 2016年03月24日 - 2016年03月27日   記述言語:英語   開催地:Doshisha University, Kyoto  

  • Design and Photophysical Characterizations of Far-red Sensitive Squaraine Dyes with Small Energy Barrier for Dye Regeneration

    PANDEY, Shyam S

    日本化学会第96春季年会 

     詳細を見る

    開催期間: 2016年03月24日 - 2016年03月27日   記述言語:英語   開催地:Doshisha University, Kyoto  

  • π共役系高分子配向薄膜内の分子性アクセプタの配向評価

    ○永松 秀一

    第63回応用物理学会春季学術講演会 

     詳細を見る

    開催期間: 2016年03月19日 - 2016年03月22日   記述言語:日本語   開催地:東京工業大学 大岡山キャンパス  

  • Multi-layer coating of oriented conjugated polymer films via FTM method

    Manish Pandey

    第63回応用物理学会春季学術講演会 

     詳細を見る

    開催期間: 2016年03月19日 - 2016年03月22日   記述言語:英語   開催地:東京工業大学 大岡山キャンパス  

  • Photophysical Investigations of Squaraine/Cyanine Dyes and Their Interaction with Protein towards NIR FRET Applications

    Maryala Saikiran

    India-Japan Expert Group Meeting on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJEGMBE-2015), Kyushu Institute of Technology, Japan  DST(India) and JSPS(Japan)

     詳細を見る

    開催期間: 2015年12月22日 - 2015年12月25日   記述言語:英語   開催地:http://www.life.kyutech.ac.jp/~ijegmbe/  

  • Dynamic Casting of Floating-film and Transferring of Oriented π-Conjugated Polymers towards Anisotropic Electronics

    Wataru Takashima

    India-Japan Expert Group Meeting on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJEGMBE-2015), Kyushu Institute of Technology, Japan  DST(India) and JSPS(Japan)

     詳細を見る

    開催期間: 2015年12月22日 - 2015年12月25日   記述言語:英語   開催地:http://www.life.kyutech.ac.jp/~ijegmbe/  

  • Tandem Dye-sensitized Solar Cells Based on TCO-less Back Contact Bottom Electrodes

    Ajay K. Baranwal

    India-Japan Expert Group Meeting on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJEGMBE-2015), Kyushu Institute of Technology, Japan  DST(India) and JSPS(Japan)

     詳細を見る

    開催期間: 2015年12月22日 - 2015年12月25日   記述言語:英語   開催地:http://www.life.kyutech.ac.jp/~ijegmbe/  

  • Parametric Optimizations of Experimental Conditions for DyeSensitized Solar Cells Based on Far-red Sensitive Squaraine Dye

    Takuya Morimoto

    India-Japan Expert Group Meeting on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJEGMBE-2015), Kyushu Institute of Technology, Japan  DST(India) and JSPS(Japan)

     詳細を見る

    開催期間: 2015年12月22日 - 2015年12月25日   記述言語:英語   開催地:http://www.life.kyutech.ac.jp/~ijegmbe/  

  • π-Conjugated Polymer Thin Film Device Fabrication using Biomassderived Solvents

    Shuichi Nagamatsu

    India-Japan Expert Group Meeting on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJEGMBE-2015), Kyushu Institute of Technology, Japan  DST(India) and JSPS(Japan)

     詳細を見る

    開催期間: 2015年12月22日 - 2015年12月25日   記述言語:英語   開催地:http://www.life.kyutech.ac.jp/~ijegmbe/  

  • Design and Development Novel NIR Dyes by Extending the π- Conjugation for Molecular Photovoltaics

    Shyam S. Pandey

    India-Japan Expert Group Meeting on Biomolecular Electronics and Organic Nanotechnology for Environment Preservation (IJEGMBE-2015), Kyushu Institute of Technology, Japan  DST(India) and JSPS(Japan)

     詳細を見る

    開催期間: 2015年12月22日 - 2015年12月25日   記述言語:英語   開催地:http://www.life.kyutech.ac.jp/~ijegmbe/  

  • Far-red sensitive squaraine dyes with extended pi-conjugation toward anchoring group for molecular photovoltaics.

    S.S. PANDEY

    THE INTERNATIONAL CHEMICAL CONGRESS OF PACIFIC BASIN SOCIETIES 2015 Honolulu, Hawaii, USA 

     詳細を見る

    開催期間: 2015年12月15日 - 2015年12月20日   記述言語:英語   開催地:http://www.pacifichem.org/  

  • Molecular design and photophysical characterization of squaraine dyes with varying fluoroalkyl substituents.

    T. Morimoto

    THE INTERNATIONAL CHEMICAL CONGRESS OF PACIFIC BASIN SOCIETIES 2015 Honolulu, Hawaii, USA 

     詳細を見る

    開催期間: 2015年12月15日 - 2015年12月20日   記述言語:英語   開催地:http://www.pacifichem.org/  

  • 配向P3HT薄膜中のF4TCNQアニオンの配列制御

    永松 秀一

    第25回 日本MRS年次大会シンポジウム,横浜市開港記念会館、横浜 

     詳細を見る

    開催期間: 2015年12月08日 - 2015年12月10日   記述言語:日本語   開催地:https://www.mrs-j.org/meeting2015/jp/  

  • Controlling the Diffusion of Bulky Cobalt Ions through the Nanopores for Enhancing the Efficiency of TCO-less Dye-Sensitized Solar Cells using Cobalt Redox Shuttle

    Shyam S. PANDEY

    第25回 日本MRS年次大会シンポジウム,横浜市開港記念会館、横浜 

     詳細を見る

    開催期間: 2015年12月08日 - 2015年12月10日   記述言語:英語   開催地:https://www.mrs-j.org/meeting2015/jp/  

  • 潜在性能を見い出す導電性高分子の成膜法

    高嶋  授

    第25回 日本MRS年次大会シンポジウム,横浜市開港記念会館、横浜 

     詳細を見る

    開催期間: 2015年12月08日 - 2015年12月10日   記述言語:日本語   開催地:https://www.mrs-j.org/meeting2015/jp/  

  • Crystal Growth Control of the Near-Infrared Absorbing Perovskite Solar Cells Consisting of Tin Halide Complex

    Yuhei Ogomi

    MRS-2015 Fall Meeting, Boston, Massachusetts, USA  Materials Research Society

     詳細を見る

    開催期間: 2015年11月29日 - 2015年12月04日   記述言語:英語   開催地:Boston, Massachusetts, USA  

  • Design of Squaraine Based NIR Dyes with Extended -πconjugation for Dye-Sensitized Solar Cells

    Shyam S. Pandey

    3rd International Symposium on Applied Engineering and Sciences (SAES2015) 

     詳細を見る

    開催期間: 2015年11月23日 - 2015年11月24日   記述言語:英語   開催地:Universiti Putra Malaysia, Malaysia  

  • NANOMETRIC INTERFACE CONTROL AND OPTIMIZATION IN TCO-LESS DYE SENSITIZED SOLAR CELLS

    Shyam S. Pandey

    The 15th International Discussion & Conference on Nano Interface Controlled Electronic Devices (IDC-NICE 2015) 

     詳細を見る

    開催期間: 2015年10月07日 - 2015年10月09日   記述言語:英語  

  • Orientation factors in floating-film transfer method

    Manish Pandey

    第76回応用物理学会秋季学術講演会 -名古屋国際会議場 

     詳細を見る

    開催期間: 2015年09月13日 - 2015年09月17日   記述言語:英語  

  • Controlled Crystal Growth of MAPbI3 with Smooth Surface Using EACl and DMSO

    V. Murugan

    2015年電気化学秋季大会埼玉工業大学 

     詳細を見る

    開催期間: 2015年09月11日 - 2015年09月13日   記述言語:英語  

  • Sb-Xanthate前駆体を用いた塗布型有機無機ハイブリット太陽電池

    ◯田中 宏典

    2015年電気化学秋季大会埼玉工業大学 

     詳細を見る

    開催期間: 2015年09月11日 - 2015年09月13日   記述言語:日本語  

  • Orientation of Conjugated Polymers Through Floating Film Transfer Method

    Manish Pandey

    ICMAT 2015 and IUMRS-ICA 2015, Suntec, Singapore 

     詳細を見る

    開催期間: 2015年06月28日 - 2015年07月03日   記述言語:英語  

  • Flat Titanium based Photoanode and Counter Electrode for Transparent Conductive Oxide-less Dye sensitized Solar Cells

    Azwar Hayat

    ICMAT 2015 and IUMRS-ICA 2015, Suntec, Singapore 

     詳細を見る

    開催期間: 2015年06月28日 - 2015年07月03日   記述言語:英語  

  • TCO-less Tandem DSSC with ITO-PET as Intermediate Layer Featuring Enhanced Spectra

    Ajay Kumar Baranwal

    ICMAT 2015 and IUMRS-ICA 2015, Suntec, Singapore 

     詳細を見る

    開催期間: 2015年06月28日 - 2015年07月03日   記述言語:英語  

  • Design and Photophysical Characterizations of Fluoroalkyl Substituted Squaraine Dyes for Dye-Sensitized Solar Cells

    Shyam S. Pandey

    ICMAT 2015 and IUMRS-ICA 2015, Suntec, Singapore 

     詳細を見る

    開催期間: 2015年06月28日 - 2015年07月03日   記述言語:英語  

  • Enhancement of photoconversion efficiency of TCO-less DSCs by enhancing the diffusion of cobalt species through nanomaterials used as an electrolyte absorbing layer.

    MOLLA, Md. Zaman

    日本化学会第95春季年会, 日本大学 理工学部船橋キャンパス、2015年3月26日―29日 

     詳細を見る

    開催期間: 2015年03月26日 - 2015年03月29日   記述言語:英語   開催地:日本大学 理工学部船橋キャンパス  

  • Synthesis and photophysical characterization of the direct ring functionalized unsymmetrical NIR cyanine dyes

    SAIKIRAN, Maryala

    日本化学会第95春季年会, 日本大学 理工学部船橋キャンパス、2015年3月26日―29日 

     詳細を見る

    開催期間: 2015年03月26日 - 2015年03月29日   記述言語:英語   開催地:日本大学 理工学部船橋キャンパス  

  • CsPbI3を用いたペロブスカイト太陽電池

    西中 浩二

    日本化学会第95春季年会, 日本大学 理工学部船橋キャンパス、2015年3月26日―29日 

     詳細を見る

    開催期間: 2015年03月26日 - 2015年03月29日   記述言語:日本語   開催地:日本大学 理工学部船橋キャンパス  

  • 水晶振動子を用いたペロブスカイト/基板界面の解析

    廣谷 太佑

    日本化学会第95春季年会, 日本大学 理工学部船橋キャンパス、2015年3月26日―29日 

     詳細を見る

    開催期間: 2015年03月26日 - 2015年03月29日   記述言語:日本語   開催地:日本大学 理工学部船橋キャンパス  

  • Controlled crystal growth of lead halide perovskites by adding different types of chloride precursors

    VIGNESHWARAN, Murugan

    日本化学会第95春季年会, 日本大学 理工学部船橋キャンパス、2015年3月26日―29日 

     詳細を見る

    開催期間: 2015年03月26日 - 2015年03月29日   記述言語:英語   開催地:日本大学 理工学部船橋キャンパス  

  • Investigation of effective utilization of titanium (Ti) coil based cylindrical dye sensitized solar cells for indoor light application

    KAPIL, Gaurav

    日本化学会第95春季年会, 日本大学 理工学部船橋キャンパス、2015年3月26日―29日 

     詳細を見る

    開催期間: 2015年03月26日 - 2015年03月29日   記述言語:英語   開催地:日本大学 理工学部船橋キャンパス  

  • セシウムを使用したペロブスカイト型ハイブリット太陽電池

    西中 浩二

    電気化学会第82回大会は、横浜国立大学, 2015年3月15日(日)~17日 

     詳細を見る

    開催期間: 2015年03月15日 - 2015年03月17日   記述言語:日本語   開催地:横浜国立大学  

  • バイオマス溶媒を用いた塗布型有機デバイスの作製

    永松 秀一

    第62回応用物理春季学術講演会、東海大学、3月11日ー3月14日 

     詳細を見る

    開催期間: 2015年03月11日 - 2015年03月14日   記述言語:日本語   開催地:東海大学  

  • TCO-less Tandem dssc featuring enhanced spectra with new architectures

    A. K. Baranwal

    第62回応用物理春季学術講演会、東海大学、3月11日ー3月14日 

     詳細を見る

    開催期間: 2015年03月11日 - 2015年03月14日   記述言語:英語   開催地:東海大学  

  • Optimization of suitable chloride precursor for better crystal growth of MAPbI3

    M. Vigneshwaran

    第62回応用物理春季学術講演会、東海大学、3月11日ー3月14日 

     詳細を見る

    開催期間: 2015年03月11日 - 2015年03月14日   記述言語:英語   開催地:東海大学  

  • Orientation of conjugated polymers by FTM method

    Manish Pandey

    第62回応用物理学会春季学術講演会,東海大学 湘南キャンパス, 2015年3月11日―14日 

     詳細を見る

    開催期間: 2015年03月11日 - 2015年03月14日   記述言語:英語   開催地:東海大学  

  • Photophysical and photovoltaic characterization far-red sensitizing squaraine dyes aiming towards fine tuning of the molecular struture

    Takuya Morimoto

    111th International Conference on Nanomolecular Electronics (ICNME-2014) 

     詳細を見る

    開催期間: 2014年12月17日 - 2014年12月19日   記述言語:英語   開催地:Kobe International Conference Center, Kobe, Japan  

  • Implication of different dyes on the performance of coil type cylindrical dye sensitized solar cells for indoor applications

    Gaurav Kapil

    111th International Conference on Nanomolecular Electronics (ICNME-2014) 

     詳細を見る

    開催期間: 2014年12月17日 - 2014年12月19日   記述言語:英語   開催地:Kobe International Conference Center, Kobe, Japan  

  • Transparent Conductive Oxide free Dye sensitized solar cell using flat Titanium sheet.

    Azwar Hayat

    111th International Conference on Nanomolecular Electronics (ICNME-2014) 

     詳細を見る

    開催期間: 2014年12月17日 - 2014年12月19日   記述言語:英語   開催地:Kobe International Conference Center, Kobe, Japan  

  • Sn-Pb Halide Cocktail Perovskite Solar Cell Covering near IR Regions and Suppression of Charge Recombination

    Shuzi Hayase*

    2014 MRS Fall Meeting & Exhibit November 30 - December 5, 2014 Boston, Massachusetts, USA 

     詳細を見る

    開催期間: 2014年11月30日 - 2014年12月05日   記述言語:英語   開催地:Boston, Massachusetts, USA  

  • Fabrication of Perovskite Solar Cells by Low-Temperature Process Using Zinc Oxide Precursor

    Yuhei Ogomi

    2014 MRS Fall Meeting & Exhibit November 30 - December 5, 2014 Boston, Massachusetts, USA 

     詳細を見る

    開催期間: 2014年11月30日 - 2014年12月05日   記述言語:英語   開催地:Boston, Massachusetts, USA  

  • コバルト電解液を用いZnポルフイリンをカクテル色素として最適化したTCO-Less色素増感太陽電池

    MOLLA MD. ZAMAN

    2014年度電気化学会秋大会, 北海道大学、9月27日ー28日 

     詳細を見る

    開催期間: 2014年09月27日 - 2014年09月28日   記述言語:英語   開催地:北海道大学  

  • TCO-lessバックコンタクト色素増感太陽電池の光閉じ込め効果向上による性能向上

    田中宏典

    2014年度電気化学会秋大会, 北海道大学、9月27日ー28日 

     詳細を見る

    開催期間: 2014年09月27日 - 2014年09月28日   記述言語:日本語   開催地:北海道大学  

  • TCO-less Dye-Sensitized Solar Cells Consisting of Dye-Cocktail and Cobalt Redox Shuttle based Electrolyte

    M. Z. Molla*

    6th World Conference on Photovoltaic Energy Conversion (WCPEC-6), Kyoto International Conference Center, Kyoto, Japan, 

     詳細を見る

    開催期間: 2014年09月23日 - 2014年09月27日   記述言語:英語   開催地:Kyoto International Conference Center, Kyoto  

  • Air Stable Cocktail Sn/Pb Halide Perovskite Sensitized Solar Cells for Near Infrared Photoconversion

    Shuzi Hayase

    6th World Conference on Photovoltaic Energy Conversion (WCPEC-6), Kyoto International Conference Center, Kyoto, Japan, 

     詳細を見る

    開催期間: 2014年09月23日 - 2014年09月27日   記述言語:英語   開催地:Kyoto International Conference Center, Kyoto  

  • Large-sized Dye-sensitized Solar Cells and Perovskite Solar Cells

    Tingli Ma

    6th World Conference on Photovoltaic Energy Conversion (WCPEC-6), Kyoto International Conference Center, Kyoto, Japan, 

     詳細を見る

    開催期間: 2014年09月23日 - 2014年09月27日   記述言語:英語   開催地:Kyoto International Conference Center, Kyoto  

  • Sn Doped Metal Halide Perovskite Sensitized Solar Cells Covering Near IR Region

    S. Hayase

    29th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2014), Netherlands, Sept. 22-26, 2014  

     詳細を見る

    開催期間: 2014年09月22日 - 2014年09月28日   記述言語:英語   開催地:RAI Convention Center, Amsterdam, Netherlands.  

  • Investigation of Metal xanthates as curing agents for epoxy resin

    Vagvala, Tarun Chand

    第64回(2014年)ネットワークポリマー講演討論会2014年10月22日(水-24日関西大学(金) 

     詳細を見る

    開催期間: 2014年09月22日 - 2014年09月24日   記述言語:英語   開催地:関西大学  

  • Sb キサンテートをプリカーサーとする Sb2S3 結晶作製時の基板依存性

    ○川野美延

    2014年 第75回応用物理学会秋季学術講演会; 北海道大学札幌キャンパス 

     詳細を見る

    開催期間: 2014年09月17日 - 2014年09月20日   記述言語:日本語   開催地:北海道大学札幌キャンパス  

  • Extended Spectral Photo Response utilizing TCO-less Tandem DSSC

    Ajay Baranwal

    2014年 第75回応用物理学会秋季学術講演会; 北海道大学札幌キャンパス 

     詳細を見る

    開催期間: 2014年09月17日 - 2014年09月20日   記述言語:英語   開催地:北海道大学札幌キャンパス  

  • 電荷分離界面制御による Sn/Pb ペロブスカイト太陽電池の特性評価

    ○Yuhei Ogomi

    2014年 第75回応用物理学会秋季学術講演会; 北海道大学札幌キャンパス 

     詳細を見る

    開催期間: 2014年09月17日 - 2014年09月20日   記述言語:英語   開催地:北海道大学札幌キャンパス  

  • スズ系ぺロブスカイト太陽電池の高性能に関する検討

    Yuhei Ogomi

    2014年 第75回応用物理学会秋季学術講演会; 北海道大学札幌キャンパス 

     詳細を見る

    開催期間: 2014年09月17日 - 2014年09月20日   記述言語:英語   開催地:北海道大学札幌キャンパス  

  • 酸化亜鉛前躯体を用いた低温プロセスによるペロブスカイト太陽電池の作製

    尾込裕平

    2014年 第75回応用物理学会秋季学術講演会; 北海道大学札幌キャンパス 

     詳細を見る

    開催期間: 2014年09月17日 - 2014年09月20日   記述言語:英語   開催地:北海道大学札幌キャンパス  

  • A simple procedure for orienting π-conjugated polymers in floating-film

    Wataru Takashima*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Axially anchored Phosphorus-Phthalocyanine dyes as NIR Sensitizer for Dye Sensitized Solar Cell

    Azwar Hayat

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Performance optimization of transparent conductive oxide less (TCO-less) back contact dye-sensitized solar cell using Zinc porphyrin dye employing cobalt based redox electrolyte

    Md. Zaman Molla*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Molecular Acceptor Alignment in Doped Friction-Transferred Polymer Thin Film

    Shuichi Nagamatsu*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Gallium (III) xanthate as a novel latent epoxy resin curing agent

    VAGVALA, Tarun Chand*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Cylindrical TCO-Less dye-sensitized solar cells with back contact structure

    oTingli Ma

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Solution processed organic-inorganic hybrid solar cells fabricated from metal xanthate precursor

    Minobu Kawano*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Hybrid type Dye-Sensitized Solar Cells based on near IR dye and visible dye

    Terumi Nishimura

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Molecular design of NIR dyes to enhance IPCE for the hybrid or cock-tail type DSSCs

    Naotaka Fujikawa*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Prospects and Problems with Squaraine Dyes as far-red to NIR Sensitizer for Dye-Sensitized Solar Sells

    Shyam S. Pandey*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Effect of surface treatment and cross-sectional area of Ti wire on the performance of coil based cylindrical TCO-less cylindrical DSSCs

    Gaurav Kapil*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Tandem dye Sensitized solar cells utilizing back contact transparent conductive oxide-less (TCO-less) bottom electrodes

    Ajay K. Baranwal

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Sn/Pb halide-based perovskite sensitized solar cells covering near IR region

    Shuzi Hayase*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • Fabrication of CuInS2 Nano Particle by Metal Xanthate

    Kenji Yoshino*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年08月24日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • A SIMPLE METHOD TO DROP-CAST CONDUCTING POLYMER FILMS FOR LARGE-SCALE ORIENTATION

    Wataru Takashima

    International Conference on Science and Technology of Synthetic Metals (ICSM-2014), Turku, Finland, June 30-July 5, 2014  

     詳細を見る

    開催期間: 2014年06月30日 - 2014年07月05日   記述言語:英語   開催地:Turku, Finland  

  • MOLECULAR DOPANT ALIGNMENT IN ORIENTED POLYMER THIN FILM

    Shuichi Nagamatsu

    International Conference on Science and Technology of Synthetic Metals (ICSM-2014), Turku, Finland, June 30-July 5, 2014  

     詳細を見る

    開催期間: 2014年06月30日 - 2014年07月05日   記述言語:英語   開催地:Turku, Finland  

  • MOVING FROM FAR-RED TO NIR DYE-SENSITIZERS FOR DYE-SENSITIZED SOLAR CELLS

    Shyam S. Pandey

    International Conference on Science and Technology of Synthetic Metals (ICSM-2014), Turku, Finland, June 30-July 5, 2014  

     詳細を見る

    開催期間: 2014年06月30日 - 2014年07月05日   記述言語:英語   開催地:Turku, Finland  

  • Electrical Characterization of CuInS2 Thin Film from Metal Xanthate Precursors

    Kenji Yoshino*

    IUMRS-ICA-2014, Fukuoka University, Fukuoka, Japan, August 24-30, 2014  

     詳細を見る

    開催期間: 2014年06月28日 - 2014年08月30日   記述言語:英語   開催地:Fukuoka University, Fukuoka, Japan,  

  • nvestigation of Gallium xanthate as latent curing agent for epoxy resin

    VAGVALA, Tarun Chand

    第51回化学関連支部合同大会; 北九州国際会議場、小倉北九州 

     詳細を見る

    開催期間: 2014年06月28日   記述言語:英語   開催地:小倉北九州  

  • カクテル色素によるTCO-less色素増感太陽電池の高効率化

    趙 琪

    第51回化学関連支部合同大会; 北九州国際会議場、小倉北九州 

     詳細を見る

    開催期間: 2014年06月28日   記述言語:日本語   開催地:小倉北九州  

  • Effect of Titanium coil photoanodes on the performance of cylindrical dye-sensitized solar cells

    *Gaurav Kapil

    第51回化学関連支部合同大会; 北九州国際会議場、小倉北九州 

     詳細を見る

    開催期間: 2014年06月28日   記述言語:英語   開催地:小倉北九州  

  • Dye Sensitized Solar Cells based on P-Substituted Phthalocyanine Dye

    H. Azwar

    第51回化学関連支部合同大会; 北九州国際会議場、小倉北九州 

     詳細を見る

    開催期間: 2014年06月28日   記述言語:英語   開催地: