研究者詳細 - パンディ　シャム　スディル

論文 - パンディ　シャム　スディル

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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

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

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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

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

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

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

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

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

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

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

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

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

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

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

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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

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

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

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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

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

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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

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

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

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

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

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