高等学校化学学报

高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (1): 175.doi: 10.7503/cjcu20120275

• 物理化学 • 上一篇    下一篇

对电极性能对染料敏化太阳电池动力学过程的影响

奚小网1,2, 寇东星1, 胡林华1, 戴松元1   

  1. 1. 中国科学院等离子体物理研究所, 中国科学院新型薄膜太阳电池重点实验室, 合肥 230031;
    2. 无锡职业技术学院机电技术学院, 无锡 214121
  • 收稿日期:2012-03-26 发布日期:2012-12-31
  • 通讯作者: 戴松元,男,博士,研究员,博士生导师,主要从事染料敏化太阳电池研究.E-mail:sydai@ipp.ac.cn E-mail:sydai@ipp.ac.cn
  • 基金资助:

    国家重点基础研究发展计划(批准号: 2011CBA00700); 国家高技术研究发展计划(批准号: 2011AA050527); 国家自然科学基金(批准号: 21173228)和中国博士后科学基金(批准号: 20110490835)资助.

Investigation of the Dynamic Processes in Dye-sensitized Solar Cells Based on Capability of Counter Electrode

XI Xiao-Wang1,2, KOU Dong-Xing1, HU Lin-Hua1, DAI Song-Yuan1   

  1. 1. Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;
    2. The College of Mechanical and Electrical Technology, Wuxi Institute of Technology, Wuxi 214121, China
  • Received:2012-03-26 Published:2012-12-31

PDF (PC)

被引次数

16

摘要：

借助电化学阻抗谱(EIS)和强度调制光电流谱(IMPS)/强度调制光电压谱(IMVS)技术, 采用不同纳米TiO2多孔薄膜对电极研究了染料敏化太阳电池(DSC)内部2个主要电荷输运过程的内在联系, 并探讨了载Pt材料对DSC界面动力学过程及电池宏观性能的影响机理. 借助等效电路模型分析了基于不同对电极材料电池的填充因子变化原因. 结果表明, 对电极材料的电极电荷交换过程制约光阳极膜内电子传输, 进而影响电池光伏性能; 同时对电极催化反应速率主要与催化剂活性、 载Pt材料电导率和催化反应面积有关.

关键词: 染料敏化太阳电池, 对电极, 界面动力学

Abstract:

The charge transfer dynamic processes in dye-sensitized solar cells(DSC) with a TiO2 porous counter electrode was investigated by electrochemistry impedance spectrum(EIS) and intensity-modulated photocurrent spectroscopy(IMPS)/intensity-modulated photovoltage spectroscopy(IMVS). The relationship between several dominating charge transfer processes in DSC was discussed. The effect mechanism of different counter electrode materials on short-circuit current density (Jsc) and fill factors (FF) were analysed by equivalent circuit. It is found that, the electron transport process in TiO2 anode is seriously limited by a bad counter electrode material. The capability of counter electrode is mainly determined by the activity of catalyzer, the conductance of the carrier material and the effective contact area.

Key words: Dye-sensitized solar cell, Counter electrode, Interface dynamic

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