Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (10): 2360-2366.doi: 10.3866/PKU.WHXB20111023

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Influence of Temperature on the Properties of Polysulfide Electrolyte and Quantum Dot Sensitized Solar Cells

SHI Ji-Fu, WAN Qing-Cui, XU Gang, XU Xue-Qing, FAN Ye   

  1. Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy and Gas Hydrate, Chinese Academy of Sciences, Guangzhou 510640, P. R. China
  • Received:2011-06-09 Revised:2011-07-18 Published:2011-09-27
  • Contact: XU Gang, XU Xue-Qing;
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21073193, 21103194), Science and Technology Program of Guangdong Province, China (2009B011100005) and Director Innovation Foundation of Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences (y007r71001).

Abstract: We studied the influence of temperature on the conductivity of a polysulfide electrolyte and the photovoltaic performance of quantum dot sensitized solar cells by electrochemical methods. The results indicate that the conductivity of the electrolyte increases and the diffusion impedance of the polysulfide ions in the electrolyte decreases with an increase in the temperature. Moreover, the photoelectric conversion efficiency of the quantum dot sensitized solar cells decreases when the temperature increases. This phenomenon is mainly caused by a more serious back reaction and the desorption of quantum dots at higher temperatures.

Key words: Quantum dot sensitized solar cell, Temperature, Electrolyte, Conductivity, Impedance


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