Disulfide/Thiolate Based Redox Shuttle for Dye-Sensitized Solar Cells: An Impedance Spectroscopy Study

被引：26

作者：

Xu, Xiaobao ^{[2
]}

Cao, Kun ^{[2
]}

Huang, Dekang ^{[1
]}

Shen, Yan ^{[1
]}

Wang, Mingkui ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Michael Gratzel Ctr Mesoscop Solar Cells, Wuhan 430074, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 48期

关键词：

COUNTER ELECTRODE; RECOMBINATION; SEMICONDUCTOR; PHOTOVOLTAGE; PERFORMANCE; CONSTANTS; TRANSPORT; COUPLES; LIQUID;

D O I：

10.1021/jp308109t

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Redox electrolyte has been proven to be extremely important in determining the optoelectronic properties in dye-sensitized solar cells (DSCs). Herein, we report on the application of various disulfide/thiolate redox shuttles within organic or aqueous electrolyte in conjunction with a dye-sensitized heterojunction. Electrochemical impedance spectroscopy is used to explore the difference in DSCs' performance using disulfide/thiolate-based redox shuttles system in term of solvent effect and cations effect. A long interfacial charge recombination lifetime is found in disulfide/thiolate-based cells compared with that in iodide/triiodide cells, which can be attributed to different recombination states in these devices.

引用

页码：25233 / 25241

页数：9

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