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Preparation and performance of dye-sensitized solar cells based on ZnO-modified TiO2 electrodes

  • Sheng-jun Li
  • Yuan Lin
  • Wei-wei Tan
  • Jing-bo Zhang
  • Xiao-wen Zhou
  • Jin-mao Chen
  • Zeng Chen
Article

Abstract

The ZnO-modified TiO2 electrode was prepared by adding Zn(CH3COO)2·2H2O to the TiO2 colloid during the sol-gel production process, and was used in dye-sensitized solar cells (DSCs). The open circuit voltage (V OC) and fill factor (ff) of the cells were improved significantly. The performances of the ZnO-modified TiO2 electrode such as dark current, transient photocurrent, impedance, absorption spectra, and flat band potential (V fb) were investigated. It is found that the interface charge recombination impedance increases and V fb shifts about 200 mV toward the cathodic potential. The effect mechanism of ZnO modification on the performance of DSCs may be that ZnO occupies the surface states of the TiO2 film.

Keywords

dye-sensitized solar cells TiO2 electrode modification photoelectrochemical properties 

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Copyright information

© Journal Publishing Center of University of Science and Technology Beijing and Springer Berlin Heidelberg 2010

Authors and Affiliations

  • Sheng-jun Li
    • 1
    • 2
  • Yuan Lin
    • 2
  • Wei-wei Tan
    • 2
  • Jing-bo Zhang
    • 2
  • Xiao-wen Zhou
    • 2
  • Jin-mao Chen
    • 2
  • Zeng Chen
    • 1
  1. 1.College of Physics and ElectricsHe’nan UniversityKaifengChina
  2. 2.Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of ChemistryChinese Academy of SciencesBeijingChina

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