A novel high-performance counter electrode for dye-sensitized solar cells
- 作者：Guiqiang Wang ; Ruifeng Lin ; Yuan Lin ; Xueping Li ; Xiaowen Zhou and Xurui Xiao
- 关键词：Pt/NiP-plated glass ; Counter electrode ; Photovoltaic performance ; Dye-sensitized solar cells
- 刊名：Electrochimica Acta
- 出版年：2005
- 期刊代码：30_00134686
- 类别：ch
- 出版时间：2005
- 卷：50
- 期：28
- 页码：5546-5552
- 文件大小：331 K
摘要
A novel Pt counter electrode for dye-sensitized solar cells (DSC) was prepared by thermal decomposition of H2PtCl6 on NiP-plated glass substrate. The charge-transfer kinetic properties of the platinized NiP-plated glass electrode (Pt/NiP electrode) for triiodide reduction were studied by electrochemical impedance spectroscopy. Pt/NiP electrode has the advantage over the platinized FTO conducting glass electrode (Pt/FTO electrode) in increasing the light reflectance and reducing the sheet resistance leading to improve the light harvest efficiency and the fill factor of the dye-sensitized solar cells effectively. The photon-to-current efficiency and the overall conversion efficiency of DSC using Pt/NiP counter electrode is increased by 20%and 33%, respectively, compared to that of using Pt/FTO counter electrode. Examination of the anodic dissolution and the long-term test on the variation of charge-transfer resistance indicates the good stability of the Pt/NiP electrode in the electrolyte containing iodide/triiodide.