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Journal of Applied Electrochemistry

, Volume 39, Issue 1, pp 147–154 | Cite as

Synthesis of pyridine derivatives and their influence as additives on the photocurrent of dye-sensitized solar cells

  • Xiong Yin
  • Weiwei Tan
  • Jingbo ZhangEmail author
  • Yuan LinEmail author
  • Xurui Xiao
  • Xiaowen Zhou
  • Xueping Li
  • Babasaheb Raghunath Sankapal
Original Paper

Abstract

New kinds of additive, 4-alkyloxypyridne derivatives, were synthesized by introducing an alkyloxy group into the 4-position of 2-methylpyridine. The influence of these electrolyte additives on the short-circuit photocurrent (J sc) of dye sensitized solar cells was investigated by combining electrochemical and spectral techniques. With the addition of pyridine derivatives to the electrolyte, a decrease in the rate of dye regeneration was observed by laser flash photolysis measurements and cyclic voltammetry, whereas, measurement of electrochemical impedence spectra showed an increase in the charge transfer resistance due to the formation of a complex between the pyridine derivatives and iodine, as identified by an absorption peak around 378 nm in the UV–Vis spectra. This leads to a decrease in J sc of dye-sensitized solar cells. This adverse effect on the J sc can be attributed to reaction or coordination between the dye cations and the iodine in the electrolyte.

Keywords

Dye sensitized solar cell Pyridine derivatives Charge transfer complex Cyclic voltammetry Laser flash photolysis 

Notes

Acknowledgments

This work was supported by the National Research Fund for Fundamental Key Project (2006CB202605) and the National Natural Science Foundation of China (50221201 and 50473055). Thanks to Qiqiang Wang and Min Liu for the help towards the synthesis. Experimental help from Shujing Feng and Hanping Zhang are gratefully acknowledged.

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Xiong Yin
    • 1
    • 2
  • Weiwei Tan
    • 1
    • 2
  • Jingbo Zhang
    • 1
    Email author
  • Yuan Lin
    • 1
    Email author
  • Xurui Xiao
    • 1
  • Xiaowen Zhou
    • 1
  • Xueping Li
    • 1
  • Babasaheb Raghunath Sankapal
    • 3
  1. 1.Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of ChemistryChinese Academy of SciencesBeijingChina
  2. 2.Graduate School of Chinese Academy of SciencesBeijingChina
  3. 3.Thin Film and Nano Science Laboratory, Department of PhysicsNorth Maharashtra UniversityJalgaonIndia

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