The surface treatment of Ti meshes for use in large-area flexible dye-sensitized solar cells

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• 作者：Yaoming Xiao ^{ymxiao2011@sohu.com} ; Jihuai Wu ; ^{jhwu@hqu.edu.cn} ; Gentian Yue ; Jianming Lin ; Miaoliang Huang ; Leqing Fan ; Zhang Lan
• 关键词：Platinum counter electrode ; Ti mesh ; NaOH hydrothermal treatment ; HF post-treatment ; Large area ; Flexible dye-sensitized solar cell
• 刊名：Journal of Power Sources
• 出版年：2012
• 期刊代码：58_03787753
• 类别：ce
• 出版时间：15 June, 2012
• 卷：208
• 期：Complete
• 页码：197-202
• 文件大小：1826 K

摘要

We report that NaOH hydrothermal treatment and HF post-treatment of the titanium mesh for the Pt/Ti counter electrode improved the efficiency of dye-sensitized solar cells. High performance platinum nanoparticles have been sprayed onto Ti meshes to form counter electrodes for use in large-area flexible DSSCs using a vacuum thermal decomposition method at low temperature (120 掳C). The obtained Pt/Ti counter electrode shows low charge-transfer resistance (57.52 惟 cm² with active area of 80 cm²) and high electrocatalytic activity for the I₃^{鈭?/sup>/I鈭?/sup> redox reaction. The photovoltaic properties and resistances of Pt/Ti counter electrodes with different HF post-treatment times of the NaOH treated Ti meshes have been investigated. The efficiency of the large-area (80 cm2) flexible DSSC reaches 6.17%under irradiation with a natural light intensity of 55 mW cm鈭? measured outdoors.}