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• W2596703612 abstract "Dye-sensitized solar cells (DSSCs) are gaining considerable interest as alternatives to the semiconductor-based thin film solar cells. The noble metal platinum (Pt) is conventionally used as counter electrode (CE) material for fabricating DSSCs. Since Pt is expensive and scarce, new materials have been explored to develop cost-effective Pt-free counter electrodes for DSSCs. Two-dimensional (2D) graphene-based counter electrodes have achieved the highest known power conversion efficiency ({eta}) of 13%, which has stimulated research activities in 2D layered transition metal dichalcogenides (TMDs) for developing Pt-free DSSCs. In this review, progress made on alternative counter electrodes for fabricating low-cost Pt-free DSSCs, based on earth-abundant 2D TMDs including MoS2, WS2, TiS2, FeS2, CoS2, NiS2, SnS2, MoSe2, NbSe2, TaSe2, NiSe2, FeSe2, CoSe2, Bi2Se3 and their based composites, are discussed and summarized. Also, the considerable progress made on thin films of MoS2 and MoS2 based carbon, graphene, carbon nanotubes (CNTs), carbon nanofibers (CNFs), and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composites as efficient counter electrodes (CEs) for DSSCs are discussed, in terms of their electrochemical and photovoltaic properties. At present, PCE values higher than that of standard Pt CE have been recorded for a number of TMD-based CEs, which include MoS2 and MoSe2/thin films deposited on Mo foil, MoS2/CNTs, MoS2/graphene, MoS2/carbon, MoSe2/PEDOT:PSS, NbSe2, FeS2, FeSe2 nanosheets, TiS2/graphene, and NiS2/graphene hybrid systems in DSSCs, for the reduction of triiodide (I3-) to iodide (I-). The highest PCE ({eta}=10.46%) versus Pt CE ({eta}=8.25%) at 1 Sun (100 mW/cm2, AM 1.5G) was measured for DSSCs having a low cost and flexible CoSe2/carbon-nanoclimbing wall counter electrode deposited on a nickel foam." @default.
• W2596703612 created "2017-03-23" @default.
• W2596703612 creator A5058978459 @default.
• W2596703612 creator A5059462265 @default.
• W2596703612 creator A5068292935 @default.
• W2596703612 creator A5075833583 @default.
• W2596703612 date "2017-03-12" @default.
• W2596703612 modified "2023-09-27" @default.
• W2596703612 title "Two-Dimensional Transition Metal Dichalcogenides-Based Counter Electrodes for Dye-Sensitized Solar Cells" @default.
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