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Performances improvement of eosin Y sensitized solar cells by modifying TiO2 electrode with silane-coupling reagent

  • Articles/Physical Chemistry
  • Published:
Chinese Science Bulletin

Abstract

Chemical fixing of xanthene dye (eosin Y) on the surface of TiO2 electrode was carried out by modifying the electrode with silane-coupling reagent to obtain stable dye-sensitized TiO2 electrode. Such silane modification can not only evidently enhance the stability of dye-sensitized TiO2 electrode but also improve the energy conversion efficiency of the assembled cells by increasing short-circuit photocurrent (J SC) and open-circuit photovoltage (V OC). It was found that the improvements of cell performances differ depending on the composition of the electrolyte. The optimum cell of the cell performance was achieved in the electrolyte with 0.5 mol/L TBAI/0.05 mol/L I2/EC:PC(3:1 w/w), yielding J SC of 4.69 mA·cm−2, V OC of 0.595 V, fill factor (FF) of 0.64 and η of 1.78%. Different spectroscopic techniques including UV-Vis spectra, fluorescence spectra, EIS and dark current measurements were employed to derive reasonable analysis and explanations.

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Authors and Affiliations

  1. CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    YanFang Zhou, XuePing Li, JingBo Zhang, XiaoWen Zhou & Yuan Lin

  2. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China

    YanFang Zhou

Authors
  1. YanFang Zhou
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  2. XuePing Li
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  3. JingBo Zhang
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  4. XiaoWen Zhou
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  5. Yuan Lin
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Corresponding author

Correspondence to Yuan Lin.

Additional information

Supported by the National Research Fund for Fundamental Key Project (Grant No. 2006CB202605), High-Tech Research and Development Program of China (Grant No. 2007AA05Z439) and National Natural Science Foundation of China (Grant No. 20873162)

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Zhou, Y., Li, X., Zhang, J. et al. Performances improvement of eosin Y sensitized solar cells by modifying TiO2 electrode with silane-coupling reagent. Chin. Sci. Bull. 54, 2633–2640 (2009). https://doi.org/10.1007/s11434-009-0440-8

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  • DOI: https://doi.org/10.1007/s11434-009-0440-8

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