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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (18): 2092-2098. 上一篇    下一篇

研究论文

含二级供电基团的三苯胺类光敏染料合成及太阳能电池中的应用

梁茂，徐英军，王旭达，刘秀杰，孙喆，薛松*   

  1. (天津理工大学化学化工学院 天津 300384)
  • 投稿日期:2010-12-09 修回日期:2011-05-11 发布日期:2011-05-30
  • 通讯作者: 薛松 E-mail:xuesong@ustc.edu.cn
  • 基金资助:

    国家863计划;国家自然科学基金;天津市自然科学基金

Synthesis of Triarylamine Dyes Containing Secondary Electron-dona- ting Groups and Application in the Dye-sensitized Solar Cells

LIANG Mao, XU Ying-Jun, WANG Xu-Da, LIU Xiu-Jie, SUN Zhe, XUE Song   

  1. (College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384)
  • Received:2010-12-09 Revised:2011-05-11 Published:2011-05-30

PDF

1833

被引次数

19 | 12

以N,N-二甲基苯胺作为二级给电子单元, 合成两种具有不同长度共轭链的三苯胺类光敏染料XS19和XS22. 研究了它们的光物理与光电化学性质, 并将它们用作TiO2纳米晶电极的光敏化剂引入太阳电池, 结果表明, N,N-二甲基苯胺的引入能够抑制染料敏化太阳能电池中的电子复合, 提高电池的光电转换效率. XS22表现出更好的光伏性能, 在AM1.5 (100 mW•cm－2)的光强下, XS22敏化电池的开路电压(VOC)为685 mV, 短路电流密度(JSC)为9.6 mA•cm－2, 填充因子(FF)为0.72, 总光电转换效率为4.7%.

关键词: 染料敏化太阳能电池, 有机染料, 光电转换效率, 电子复合

Two triphenylamine based dyes (XS19 and XS22) containing N,N-dimethylaniline unit as secondary electron-donating groups with different conjugated lengths were synthesized and characterized with regard to their photophysical and photoelectrochemical properties. The dyes were applied into nanocrystalline TiO2 dye-sensitized solar cells through standard operations. It was found that, introduction of N,N-dimethylaniline unit suppressed dye aggregation and brought about superior performance over the simple triphenylamine dye in terms of power conversion efficiency. For a typical device (based on XS22) a maximum power conversion efficiency of 4.7% was obtained under simulated AM1.5 irradiation (100 mW• cm－2) with JSC＝9.6 mA•cm－2, VOC＝685 mV and FF＝0.72.

Key words: dye-sensitized solar cell, organic dyes, power conversion efficiency, electron recombination