CuInS2 Nanocrystals/PEDOT:PSS Composite Counter Electrode for Dye-Sensitized Solar Cells

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• 作者：Zhongyi Zhang ; Xiaoying Zhang ; Hongxia Xu ; Zhihong Liu ; Shuping Pang ; Xinhong Zhou ; Shanmu Dong ; Xiao Chen ; Guanglei Cui
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：November 28, 2012
• 年：2012
• 卷：4
• 期：11
• 页码：6242-6246
• 全文大小：322K
• 年卷期：v.4,no.11(November 28, 2012)
• ISSN：1944-8252

文摘

An inorganic/organic nanocomposite comprised of CuInS₂ nanocrystals and poly(styrenesulfonate)-doped poly(3,4-ethylenedioxythiophene) (CIS/PEDOT:PSS) was explored as a promising candidate for the counter electrode (CE) in dye-sensitized solar cells (DSCs). Cyclic voltammetry measurements confirmed that this composite electrode exhibited better catalytic activity compared with pristine CuInS₂ or PEDOT:PSS electrode. Electrochemical impedance spectroscopy revealed that the composite film constitutes a three-dimensional catalytic network. The DSC using this composite CE can yield 6.50% photoelectric conversion efficiency, which is comparable to that of the conventional platinum CE (6.51%) and better than that of the pristine CuInS₂ (5.45%) or PEDOT:PSS (3.22%) electrode.

Keywords:

counter electrode; CuInS₂; poly(styrenesulfonate)-doped poly(3,4-ethylenedioxythiophene); dye-sensitized solar cells; composite film