Effect of increased surface area of stainless steel substrates on the efficiency of dye-sensitized solar cells

被引：66
作者：
Yun, Ho-Gyeong [1 ,2 ]
Jun, Yongseok [1 ]
Kim, Jongdae [1 ]
Bae, Byeong-Soo [2 ]
Kang, Man Gu [1 ]
机构：
[1] Elect & Telecommun Res Inst, Convergence Components & Mat Res Lab, Taejon 305350, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, LOMC, Taejon 305701, South Korea
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 13期
关键词：
D O I：
10.1063/1.2996017
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In order to increase the electrical contact area between TiO2 particles and stainless steel (StSt) substrates of the dye-sensitized solar cells (DSSCs), StSt foil was roughened electrochemically using sulfuric acid with some additives. Compared with the DSSC with nontreated StSt substrate, DSSC with this roughened StSt substrate showed a 33% increase in light-to-electricity conversion efficiency with negligible effect on open circuit voltage (Voc) and fill factor. Electrochemical impedance spectroscopy clearly confirmed that the increased performance was due to a decreased electrical resistance at the TiO2/StSt interface. (C) 2008 American Institute of Physics.
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页数：3
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