Two Redox Couples are Better Than One: Improved Current and Fill Factor from Cobalt-Based Electrolytes in Dye-Sensitized Solar Cells

被引：13
|
作者：
Cong, Jiayan [1 ]
Hao, Yan [2 ]
Sun, Licheng [3 ,4 ]
Kloo, Lars [1 ]
机构：
[1] KTH Royal Inst Technol, Dept Chem, Sch Chem Sci & Engn, S-10044 Stockholm, Sweden
[2] Uppsala Univ, Dept Chem, Angstrom Lab, S-75120 Uppsala, Sweden
[3] KTH Royal Inst Technol, Dept Chem, Sch Chem Sci & Engn, S-10044 Stockholm, Sweden
[4] Dalian Univ Technol, DUT KTH Joint Educ & Res Ctr Mol Devices, State Key Lab Fine Chem, Dalian 116024, Peoples R China
来源：
ADVANCED ENERGY MATERIALS | 2014年 / 4卷 / 08期
基金：
瑞典研究理事会;
关键词：
RUTHENIUM SENSITIZERS; MASS-TRANSPORT; TIO2; FILMS; EFFICIENCY; MEDIATOR;
D O I：
10.1002/aenm.201301273
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：
A tandem redox strategy is used in cobalt-based electrolytes. Co(bpy) 32+/Co(bpy)33+ offers a high photovoltage at the photoanode, whereas the I-/I3 - or Fc/Fc+ redox couples facilitate charge transfer at the counter electrode. Electron exchange in the electrolyte offers beneficial concentration gradients. The overall conversion efficiency is improved from 6.5% to 7.5%. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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页数：6
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