研究者詳細 - 馬　廷麗

論文 - 馬　廷麗

分割表示453 件中 241 - 260 件目／全件表示 >>

First-principles study of electronic and optical properties of lead-free double perovskites Cs<inf>2</inf>NaBX<inf>6</inf>(B = Sb, Bi; X = Cl, Br, I) 査読有り

Zhao S., Yamamoto K., Iikubo S., Hayase S., Ma T.

Journal of Physics and Chemistry of Solids 117 117 - 121 2018年06月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 Elsevier Ltd Organolead halide perovskite is regarded as the most promising light-harvesting material for next-generation solar cells; however, the intrinsic instability and toxicity of lead are still of great concern. Bismuth is ecofriendly and has electronic properties similar to those of lead, which has gradually attracted interest for optoelectronic applications. However, the valence state of bismuth is different from that of lead, eliminating the possibility of replacing lead by bismuth in organolead halide perovskites. To address this matter, one feasible strategy is to construct B-site double perovskites by the combination of Bi 3+ and B + in 1:1 ratio. In this work, lead-free halide double perovskites of the form Cs 2 NaBX 6 (B = Sb, Bi; X = Cl, Br, I) were investigated by first-principles calculations. The electronic properties, optical absorption coefficients, and thermodynamic stability of these compounds were investigated to ascertain their potential application in solar energy conversion. The results provide theoretical support for the exploration of lead-free perovskite materials in potential optoelectronic applications.

DOI： 10.1016/j.jpcs.2018.02.032

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Dependence of Acetate-Based Antisolvents for High Humidity Fabrication of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>Perovskite Devices in Ambient Atmosphere 査読有り

Yang F., Kapil G., Zhang P., Hu Z., Kamarudin M., Ma T., Hayase S.

ACS Applied Materials and Interfaces 10 ( 19 ) 16482 - 16489 2018年05月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 American Chemical Society. High-efficiency perovskite solar cells (PSCs) need to be fabricated in the nitrogen-filled glovebox by the atmosphere-controlled crystallization process. However, the use of the glovebox process is of great concern for mass level production of PSCs. In this work, notable efficient CH 3 NH 3 PbI 3 solar cells can be obtained in high humidity ambient atmosphere (60-70% relative humidity) by using acetate as the antisolvent, in which dependence of methyl, ethyl, propyl, and butyl acetate on the crystal growth mechanism is discussed. It is explored that acetate screens the sensitive perovskite intermediate phases from water molecules during perovskite film formation and annealing. It is revealed that relatively high vapor pressure and high water solubility of methyl acetate (MA) leads to the formation of highly dense and pinhole free perovskite films guiding to the best power conversion efficiency (PCE) of 16.3% with a reduced hysteresis. The devices prepared using MA showed remarkable shelf life stability of more than 80% for 360 h in ambient air condition, when compared to the devices fabricated using other antisolvents with low vapor pressure and low water solubility. Moreover, the PCE was still kept at 15.6% even though 2 vol % deionized water was added in the MA for preparing the perovskite layer.

DOI： 10.1021/acsami.8b02554

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Incredible PCE enhancement induced by damaged perovskite layers: Deeply understanding the working principle of additives in bulk heterojunction perovskite solar cells 査読有り

Gao L., Wang L., Ding X., Zhao E., Yang S., Zhao Y., Li Y., Wang S., Ma T.

Journal of Materials Chemistry A 6 ( 10 ) 4365 - 4373 2018年03月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 The Royal Society of Chemistry. The power conversion efficiency (PCE) of perovskite solar cells (PSCs) can be improved by introducing appropriate additives into perovskite precursor solutions. However, the exact role and mechanism of additives are still unclear. In this study, self-designed cognition experiments were conducted to improve the hole extraction efficiency, as well as to deeply understand the working principle of additives. A common hole transport material, 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl) amino]-9,9′-spirobifluorene (spiro-OMeTAD), was used as an additive for bulk heterojunction PSCs (BHJ-PSCs). The results showed that the PCE of mesoporous BHJ-PSCs (M-BHJ-PSCs) was enhanced by more than 15% when an extremely low concentration of spiro-OMeTAD additive was added. However, the crystallization of the perovskite was hampered and the recombination risk increased when grain boundaries increased in the perovskite layer. Planar BHJ-PSCs were fabricated to further investigate the role of additives. In comparison with those in planar BHJ-PSCs, the hole extraction efficiency and diffusion length significantly improved in M-BHJ-PSCs due to the transport paths and relay effects caused by the spiro-OMeTAD additive. Subsequently, exact functions and a new working principle of additives in BHJ-PSCs were proposed. This study may extend the possibilities of designing highly efficient PSCs through the promotion of additive research and application.

DOI： 10.1039/c7ta09740a

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Methoxy-functionalized mesostructured stable carbon catalysts for effective biodiesel production from non-edible feedstock 査読有り

Teo S., Islam A., Ng C., Mansir N., Ma T., Thomas Choong S., Taufiq-Yap Y.

Chemical Engineering Journal 334 1851 - 1868 2018年02月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017 Elsevier B.V. The nano-architectured Ca(OCH 3 ) 2 /AC catalyst was prepared through hydrothermal process. In this work, the controlled structural growth and morphology of nano-architectured Ca(OCH 3 ) 2 /AC catalyst were reported and their conversion activity from non-edible oil source (crude jatropha oil) to biodiesel production was also evaluated in this study. Remarkable difference in catalytic activity for biodiesel production among these samples was observed. It shows that the catalytic properties of the hydrothermal synthesized catalyst was improved by exposing the catalytic active –OCH 3 predominantly on the surface of catalyst. The 0.4-OMe/AC catalyst with methanol/oil molar ratio of 12:1, agitation speed of 600 rpm and 3 wt% of catalyst provided maximum biodiesel yield of 98.65% at 60 °C for 1 h reaction time. The catalyst exhibited outstanding stability where negligible Ca 2+ leaching was detected and the recovered catalyst was reused in 8 successive cycles without significant loss in activity. Therefore, this kind of bimodal porosity catalyst is said to exhibit very high activity, stability, and recyclability, which entailed potential saving and affordable biodiesel production possibilities.

DOI： 10.1016/j.cej.2017.11.110

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Low-Temperature Processed Non-TiO2 Electron Selective Layers for Perovskite Solar Cells

Zhanglin Guo, Liguo Gao, Chu Zhang, Zhenhua Xu, and Tingli Ma

Journal of Materials Chemistry A ( The Royal Society of Chemistry ) 2018 ( 6 ) 4572 - 4589 2018年01月

In-situ grown Ni(OH)<inf>2</inf>nanosheets on Ni foam for hybrid supercapacitors with high electrochemical performance 査読有り

Guo J., Zhao Y., Jiang N., Liu A., Gao L., Li Y., Wang H., Ma T.

Journal of the Electrochemical Society 165 ( 5 ) A882 - A890 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 The Electrochemical Society. In-suit grown composite materials have received much attention on scientific communities in recent years owing to their unique physicochemical properties for applications such as energy storage devices. Herein, we report freestanding in-situ grown Ni(OH)2 nanosheets on Ni foam by a facile one-step hydrothermal approach using aqueous nickel nitrate as precursor solution without any additives. The influence of concentration of nickel nitrate on morphology and electrochemical properties of the synthesized Ni(OH) 2 /Ni foam (NHNF) was investigated. Binder-free 0.12-NHNF electrode material exhibited a high gravimetric capacity of 340 mAh g −1 at a current density of 1 A g −1 , excellent cycling stability (81.1% capacity retention after 3000 cycles) and good flexibility (89.2% capacity retention after folding in a roll). A hybrid supercapacitor (HSC) based on the synthesized 0.12-NHNF as positive electrode and commercial active carbon as negative electrode delivered a high energy density of 39.2 Wh kg −1 at a power density of 598 W kg −1 at a working voltage of 1.6 V. Long-term cycling stability test shows that the capacity retention of 84.3% was achieved with the HSC after 3000 cycles. The excellent electrochemical performance of the NHNF material indicates that it can be an appealing candidate electrode material in energy storage devices.

DOI： 10.1149/2.0411805jes

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Development of a novel mixed sulfide-iodide lead-free bismuth perovskite 査読有り

Zhang C., Teo S., Gao L., Kamata Y., Ma T.

Proceedings of SPIE - The International Society for Optical Engineering 10724 2018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）

© 2018 SPIE. In recent years, lead-based perovskites have become the most promising photovoltaic material showing excellent photovoltaic performances. However, the lead-based perovskite encounters instability and toxicity issues caused by the generation of Pb2+, which is highly not beneficial to environment. In this study, we firstly reported the synthesis and characterization of a novel lead-free mixed chalcogen-halogen perovskite material, MABiI2S (MBIS), and determined its physical and optical properties by various testing methods. The MBIS possesses a low bandgap of 1.52 eV and exhibits good absorptions across the visible light spectrum. It is also worth noting that the MBIS displayed absorption up to over 1000 nm.

DOI： 10.1117/12.2502721

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Design of a novel and highly stable lead-free Cs<inf>2</inf>NaBiI<inf>6</inf> double perovskite for photovoltaic application 査読有り

Zhang C., Gao L., Teo S., Guo Z., Xu Z., Zhao S., Ma T.

Sustainable Energy and Fuels 2 ( 11 ) 2419 - 2428 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 The Royal Society of Chemistry. In recent years, lead-based perovskites have become the most promising photovoltaic materials, showing excellent photoelectronic performance. However, the lead-based perovskites also exhibit instability and significant environmental impact. In this study, we have first reported the synthesis and characterization of a new lead-free double perovskite material, Cs2NaBiI6 (CNBI), and determined its crystal structure and optical properties by various testing methods. CNBI has a low band gap of 1.66 eV and exhibits high stability against moisture and oxygen in ambient air. We have also inspected the crystal growth process of CNBI and elucidated its crystal growth mechanism. Solar cell devices fabricated with CNBI as the absorber layer have shown great stability and reproducibility.

DOI： 10.1039/c8se00154e

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Effective oxygen reduction and evolution catalysts derived from metal organic frameworks by optimizing active sites 査読有り

Li Y., Xu H., Huang H., Gao L., Ma T.

Journal of the Electrochemical Society 165 ( 3 ) F158 - F165 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 The Electrochemical Society. Electrocatalysts for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) are core materials in many renewable energy technologies including fuel cells, metal-air batteries, and water splitting devices. However, the high cost of the catalysts such as platinum and iridium oxide severely hinders the commercial development of these devices. Herein, we report a simple method for synthesizing effective bifunctional oxygen reduction and oxygen evolution catalysts through the rationally design of bimetallic metal organic framework precursor. The ratio of Zn and Co was optimized to search the critical factors affecting the catalysis of the ORR and OER. We found that for ORR catalysis, both Co/Co 9 S 8 species and heteroatom-doped porous carbons played important roles. In contrast, the Co/Co 9 S 8 species play more important role in OER catalysis. The optimized catalyst NSC-1-5 showed excellent ORR performance, with an onset potential of 0.879 V and a half wave potential of 0.81 V, as well as good OER catalytic activity. This was achieved simply by controlling the ratio of Co and Zn in the precursor, and NSC-1-5 could serve as a bifunctional catalyst for both ORR and OER. This work could shed some light on the design of bifunctional catalyst for both ORR and OER.

DOI： 10.1149/2.0771803je

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Interparticle coupling effect of silver-gold heterodimer to enhance light harvesting in ultrathin perovskite solar cell 査読有り

Hu Z., Ma T., Hayase S.

Journal of Photonics for Energy 8 ( 1 ) 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). Thin perovskite solar cells are under intensive interest since they reduce the amount of absorber layer, especially toxic lead in methylammonium lead iodide (MAPbI 3 ) devices and have wide application in semitransparent and tandem solar cells. However, due to the decrease of the layer thickness, thin perovskite devices with weak light-harvesting have poor performance. Moreover, the performance of plasmonic thin perovskite devices by incorporating noncoupling metal NPs cannot give comparable performance with normal devices. In this perspective, we discuss the implication of employing random silver-gold heterodimers in MAPbI 3 solar cells with the aim of establishing some guidelines for the efficient ultrathin perovskite solar cells. This method induces an extraordinarily high light-harvesting for ultrathin perovskite film. And the underlying physical mechanism behind the enhanced absorption is deeply investigated by plasmon hybridization, dipolar-dipolar coupling method and FDTD simulation. We notice that perovskite embedded silver-gold heterodimer overcomes the vanished antibonding plasmon resononse in nonjunction area of gold/silver homodimer. A 150-nm perovskite film with embedded random silver-gold heterodimers with 80 nm size and 25 nm gap distance processes 28.15% absorption enhancement compared to the reference film, which is higher than the reported 10% for gold homodimers. And we also predict a realistic solution-processed, easy, and low-cost fabrication method, which provide a means to realize highly efficient ultrathin perovskite solar cell including other absorber-based photovoltaics.

DOI： 10.1117/1.JPE.8.015502

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One-dimensional MoO <inf>2</inf> -Co <inf>2</inf> Mo <inf>3</inf> O <inf>8</inf> @C nanorods: A novel and highly efficient oxygen evolution reaction catalyst derived from metal-organic framework composites 査読有り

Li Y., Xu H., Huang H., Wang C., Gao L., Ma T.

Chemical Communications 54 ( 22 ) 2739 - 2742 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 The Royal Society of Chemistry. One-dimensional MoO 2 -Co 2 Mo 3 O 8 @C nanorods were synthesized by using MoO 3 @ZIF-67 composites as a precursor for the first time, and it is found that the Co 2 Mo 3 O 8 species and its composite have excellent OER activities. The MoO 2 -Co 2 Mo 3 O 8 @C nanorods present favorable electrocatalytic advantages toward OER in alkaline solution, requiring an overpotential of only 320 mV to deliver a current density of 10 mA cm -2 . In addition, the catalyst also shows a small Tafel slope of 88 mV dec -1 and relatively good durability. The attractive OER performance can be attributed to the highly active Co 2 Mo 3 O 8 and MoO 2 species and the unique structure of the catalyst. This strategy can be extended to design and synthesize other novel and highly efficient molybdenum based ternary metal oxides as OER catalysts.

DOI： 10.1039/c8cc00025e

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Synthesis of fe, co incorporated in p-doped porous carbon using a metal-organic framework (MOF) precursor as stable catalysts for oxygen reduction reaction 査読有り

Wang N., Li Y., Guo Z., Li H., Hayase S., Ma T.

Journal of the Electrochemical Society 165 ( 12 ) G3080 - G3086 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© The Author(s) 2018. Published by ECS. Heteroatom-doped porous carbon materials have recently attracted significant attention due to their superior catalytic activities for an oxygen reduction reaction (ORR). Transition metals co-doped with heteroatom are considered to have positive effects on improving ORR catalytic activity and stability. We report a series of novel Fe, Co incorporated in P-doped carbon materials, which give high ORR performance by an in-situ carbonization method. The ratios of the two metals and the carbonization temperatures are the key factors for the electrocatalytic activity. Due to the synergistic effect of the two transition metals, the Fe, Co incorporated in P-doped porous carbon sample, carbonized at 900ºC, shows the highest catalytic activity and stability. Electrochemical measurements show that Fe, Co incorporated in P-doped porous carbon materials are promising electrocatalysts to substitute Pt-based catalysts for fuel cells application.

DOI： 10.1149/2.0131812jes

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Synthesis of Co-B in porous carbon using a metal-organic framework (MOF) precursor: A highly efficient catalyst for the oxygen evolution reaction 査読有り

Li, Y., Xu, H., Huang, H.,Gao,L., Zhao, Y., Ma, T.

Electrochemistry Communications 86 140 - 144 2018年01月

Facile synthesis of N, S co-doped porous carbons from a dual-ligand metal organic framework for high performance oxygen reduction reaction catalysts 査読有り

Li Y., Xu H., Huang H., Gao L., Zhao Y., Ma T.

Electrochimica Acta 254 148 - 154 2017年11月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017 Elsevier Ltd Heteroatom doped porous carbons have been regarded as one of most promising candidates for Pt-free oxygen reduction reaction (ORR) catalysts. The proper heteroatom bonding configuration and synergistic effect of multiple atom co-doping are very important for improving their cata lytic activity. In this work, a series of N, S co-doped porous carbons (NSCs) with excellent ORR performance were prepared by rationally using a dual-ligand metal organic framework as a carbon precursor. The interconnected porous structure, high surface area, N, S co-doping and high graphitization-N dopant, significantly contribute to the enhanced catalytic performance of ORR. The electrocatalyst studies indicated that the obtained materials have comparable ORR activity to that of the commercial Pt/C in both alkaline and acidic media, and superior long-term durability than that of Pt/C. This work can provide some guidance for synthesizing other multiple atom co-doping carbons for energy storage and conversion applications through target oriented synthesis of metal organic frameworks with different ligands.

DOI： 10.1016/j.electacta.2017.09.143

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Light engineering for bifacial transparent perovskite solar cells with high performance 査読有り

Gao L., Zhao E., Yang S., Wang L., Li Y., Zhao Y., Ma T.

Optical Engineering 56 ( 11 ) 2017年11月

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). Bifacial transparent perovskite solar cells (BTPSCs) were designed to harvest more solar energy and ensure higher efficiency than conventional PSCs. A series of BTPSCs was successfully prepared using transparent ultrathin Au electrodes with different thicknesses. The transmittance and resistance of Au electrodes played a major role in achieving photo-to-electricity conversion efficiency (PCE). Engineering the light-harvesting ability of the fabricated BTPSCs led to the highest PCE of 14.74%. Reflecting-light intensity and illumination angle were further observed to be the key factors affecting PCE. These BTPSCs could be applied on building integration of photovoltaics (PVs), such as semitransparent PV windows or venetian blinds. Another alternative application is to use these BTPSCs as the wings of unmanned aerial vehicles.

DOI： 10.1117/1.OE.56.11.117107

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All-solid-state flexible asymmetric supercapacitors with high energy and power densities based on NiCo<inf>2</inf>S<inf>4</inf>@MnS and active carbon 査読有り

Zhang Z., Huang X., Li H., Wang H., Zhao Y., Ma T.

Journal of Energy Chemistry 26 ( 6 ) 1260 - 1266 2017年11月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017 Elsevier Ltd Electrode material based on a novel core–shell structure consisting of NiCo 2 S 4 (NCS) solid fiber core and MnS (MS) sheet shell (NCS@MS) in situ grown on carbon cloth (CC) has been successfully prepared by a simple sulfurization-assisted hydrothermal method for high performance supercapacitor. The synthesized NiCo 2 S 4 @MnS/CC electrode shows high capacitance of 1908.3 F g −1 at a current density of 0.5 A g −1 which is higher than those of NiCo 2 S 4 and MnS at the same current density. A flexible all-solid-state asymmetric supercapacitor (ASC) is constructed by using NiCo 2 S 4 @MnS/CC as positive electrode, active carbon/CC as negative electrode and KOH/poly (vinyl alcohol) (PVA) as electrolyte. The optimized ASC shows a maximum energy density of 23.3 Wh kg −1 at 1 A g −1 , a maximum power density of about 7.5 kw kg −1 at 10 A g −1 and remarkable cycling stability. After 9000 cycles, the ASC still exhibited 67.8% retention rate and largely unchanged charge/discharge curves. The excellent electrochemical properties are resulted from the novel core–shell structure of the NiCo 2 S 4 @MnS/CC electrode, which possesses both high surface area for Faraday redox reaction and superior kinetics of charge transport. The NiCo 2 S 4 @MnS/CC electrode shows a promising potential for energy storage applications in the future.

DOI： 10.1016/j.jechem.2017.09.025

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Photocatalytic activity enhanced by 1D TiO<inf>2</inf>nanobelts and 2D BiVO<inf>4</inf>nanosheets Heterostructures 招待有り査読有り

Gao L., Du J., Ma T.

Micro and Nano Letters 12 ( 9 ) 580 - 584 2017年09月

記述言語：英語掲載種別：研究論文（学術雑誌）

© The Institution of Engineering and Technology 2017. Heterostructures that are formed by incorporating one-dimensional (1D) titanium dioxide (TiO 2 ) nanobelts into 2D bismuth vanadate (BiVO 4 ) nanosheets are fabricated via an electrostatic self-assembly process. The key features are investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller, zeta potential, ultraviolet-visible (vis) diffuse reflection spectra and photoluminescence spectra. As vis-light sensitiser and catalyst support, 2D BiVO 4 nanosheets can improve the vis-light photocatalytic activity of 1D TiO 2 nanobelts. Results show that 1D TiO 2 nanobelt-2D BiVO 4 nanosheet composites exhibit more efficient decomposition rate of rhodamine B compared with pure TiO 2 nanobelts. The photocatalytic activity of TiO 2 -5% BiVO 4 composites is nearly 1.7 times higher than that of pure TiO 2 nanobelts. The enhanced photocatalytic performance is attributed to the bandgap match and the formation of heterostructures between TiO 2 nanobelts and BiVO 4 nanosheets. The heterostructures extend the light responsive range and promote efficient separation of photoinduced electron-hole pairs.

DOI： 10.1049/mnl.2016.0773

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Cysteine-assisted synthesis of CuS-TiO<inf>2</inf>composites with enhanced photocatalytic activity 査読有り

Gao L., Du J., Ma T.

Ceramics International 43 ( 12 ) 9559 - 9563 2017年08月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017 Elsevier Ltd and Techna Group S.r.l. CuS-TiO 2 composites are in situ synthesized via an environmentally friendly route using biomolecule L-cysteine as a sulfur source and chelating agent. The prepared samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflectance spectra (DRS), X-ray photoelectron spectroscopy (XPS). Results indicate that CuS nanoparticles are successfully loaded on TiO 2 nanobelts. The photocatalytic activity of CuS-TiO 2 composites is more than twice of that of pure TiO 2 nanobelts under visible-light irradiation. The enhanced photocatalytic activity can be ascribed to energy band match and the formed heterostructures between CuS and TiO 2 , which lead to the efficient separation of photogenerated electrons and holes. The synthesized CuS-TiO 2 composites by methods of cysteine-assist exhibit superior stability.

DOI： 10.1016/j.ceramint.2017.04.093

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Discontinuous SnO<inf>2</inf> derived blended-interfacial-layer in mesoscopic perovskite solar cells: Minimizing electron transfer resistance and improving stability 査読有り

Dong Q., Dong Q., Wang M., Zhang Q., Chen F., Zhang S., Bian J., Ma T., Wang L., Shi Y.

Nano Energy 38 358 - 367 2017年08月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017Based on a blended-interfacial-layer (BIL) with strongly coupled four components (FTO, SnO2, TiO2 and perovskite), we demonstrate in this work the design of a more advanced electron transfer layer (ETL) for mesoscopic PSCs. For the new ETL, SnO2 is a key component and is found to be essential to lower series resistance and enhance shunt resistance. Photovoltaic performance of PSCs using new ETL is much better than that of PSCs based on traditional ETL. In addition, the new ETL has been proved to be more advantageous in avoiding interfacial degradation and improving stability of the device.

DOI： 10.1016/j.nanoen.2017.05.058

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Insights on Catalytic Activities of Transition Metal Selenides as Efficient Counter Electrode Materials for Dye-sensitized Solar Cells 査読有り

Guo J., Shi Y., Ma T.

Rengong Jingti Xuebao/Journal of Synthetic Crystals 46 ( 8 ) 1503 - 1510 2017年08月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017, Chinese Ceramic Society. All right reserved. Exploiting an alternative of the Pt-based counter electrode (CE) materials for triiodide reduction reaction has become a major interest in the fundamental research of dye-sensitized solar cells (DSCs). Transition-metal selenides (TMSes) was proved a promising non-precious metal electrocatalysts and be used as counter electrode in DSCs. However, the research on TMSes as counter electrode material in DSCs is not enough in-depth and lack systematic research. Two TMSes, Cr5.6Se8 and HfSe3 were prepared by a free-reductant solvothermal method and used them as counter electrodes in high efficiency DSCs. The electrochemical results show that these selenides have excellent catalytic activity for the reduction of triiodine/iodine couple, the conversion efficiencies of corresponding DSCs are 7.27% for Cr5.6Se8 and 7.52% for HfSe3, respectively, comparable to DSCs based on sputtered Pt CE. These results further prove the possibility of selenides as a potential CE materials, and provided a basic research for new selenides.

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