CJCU

Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (1): 175.doi: 10.7503/cjcu20120275

• Physical Chemistry • Previous Articles     Next Articles

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

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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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