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One‐pot Synthesis of CZTS/RGO Composite Material and its Electro‐Catalytic Performance towards Triiodide Reduction in Dye‐Sensitized Solar Cells
Author(s) -
Wei Liguo,
Wu Peng,
Zhan Zhaoshun,
Wu Jie,
Wang Dong,
Liu Kaizhi,
Jiang Yinlong,
Chu Jia,
Dong Yongli
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900109
Subject(s) - czts , auxiliary electrode , triiodide , materials science , kesterite , graphene , electrode , energy conversion efficiency , dye sensitized solar cell , hydrothermal synthesis , chemical engineering , nanotechnology , optoelectronics , hydrothermal circulation , chemistry , thin film , engineering , electrolyte
The composite material of quaternary kesterite type Cu 2 ZnSnS 4 and reduced graphene oxide (CZTS/RGO) was successfully synthesized by a one‐pot hydrothermal synthesis method. When applied as counter electrode materials for dye‐sensitized solar cells, it shows better electro‐catalytic performance towards reduction of triiodide. The DSSCs based on CZTS/RGO counter electrode shows a maximum solar‐to‐electrical power efficiency of 3.08%, which is much higher than that of pure CZTS counter electrode (1.41%) and pure RGO counter electrode (1.55%) prepared under the same conditions. The weight percent of GO to CZTS raw material used to synthesize CZTS/RGO is an important factors to affect the photovoltaic performance of DSSCs based on CZTS/RGO counter electrode. It is believed that as‐synthesized CZTS/RGO can potentially be used as alternative counter electrode materials to replace the expensive Pt counter electrode, and this one‐pot synthetic method will be helpful for exploring facile synthetic route of low‐cost and efficient CZTS based composite counter electrode materials.