title: Efficient p-type dye-sensitized solar cells based on disulfide/thiolate electrolytes.
abstract: Herein, an organic redox couple 1-methy-1H-tetrazole-5-thiolate (T(-)) and its disulfide dimer (T2) redox shuttle, as an electrolyte, is introduced in a p-type dye-sensitized solar cell (DSC) on the basis of an organic dye (P1) sensitizer and nanocrystal CuCrO2 electrode. Using this iodide-free transparent redox electrolyte in conjunction with the sensitized heterojunction, we achieve a high open-circuit voltage of over 300 mV. An optimal efficiency of 0.23% is obtained using a CoS counter electrode and an optimized electrolyte composition under AM 1.5 G 100 mW cm(-2) light illumination which, to the best of our knowledge, represents the highest efficiency that has so far been reported for p-type DSCs using organic redox couples.
authors.affiliation: Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, PR China.
authors.forename: Xiaobao
authors.initials: X
authors.lastname: Xu
authors.forename: Bingyan
authors.initials: B
authors.lastname: Zhang
authors.forename: Jin
authors.initials: J
authors.lastname: Cui
authors.forename: Dehua
authors.initials: D
authors.lastname: Xiong
authors.forename: Yan
authors.initials: Y
authors.lastname: Shen
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Licheng
authors.initials: L
authors.lastname: Sun
authors.forename: Yibing
authors.initials: Y
authors.lastname: Cheng
authors.forename: Mingkui
authors.initials: M
authors.lastname: Wang
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D004220:Disulfides / Q000737:chemistry*; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry; D010084:Oxidation-Reduction; D012666:Semiconductors; D012993:Solar Energy; D013777:Tetrazoles / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D004220:Disulfides; D004573:Electrolytes; D013777:Tetrazoles; C045574:1H-tetrazole