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Fluorescence and sensitization performance of phenylene-vinylene-substituted polythiophene

  • Articles/Physical Chemistry
  • Published:
Chinese Science Bulletin

Abstract

A new kind of polythiophene derivative, Poly(3-{2-[4-(2-ethylhexyloxy)-phenyl]-vinyl}-2,2′-bithiophene) (PTh), was applied in dye-sensitized solar cell to extend the light response of nanocrystalline TiO2 electrode. UV-vis absorption and fluorescence spectra were employed to investigate the interaction of PTh with nanocrystalline TiO2. The absorption coefficient of the PTh was high in visible part of spectrum, and the fluorescence emission of the PTh can be efficiently quenched by TiO2 nanoparticles owing to charge injection from the excited singlet state of PTh to the conduction band of the TiO2 particles. Cyclic voltammetry measurements were performed to study the dye regeneration reaction at the nanocrystalline TiO2/electrolyte interface. The solar cell sensitized with PTh exhibited a short-circuit photocurrent (I sc) of 3.08 mA/cm2, an open circuit voltage (V oc) of 511 mV and an overall efficiency of 0.9% under the illumination of 100 mW/cm2 (AM 1.5).

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Authors and Affiliations

  1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    JinMao Chen, XiaoWen Zhou, JingBo Zhang, XuePing Li, XuRui Xiao & Yuan Lin

  2. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    JianHui Hou & YongFang Li

  3. Graduate University of Chinese Academy of Sciences, Beijing, 100190, China

    JinMao Chen & JianHui Hou

Authors
  1. JinMao Chen
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  2. JianHui Hou
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  3. YongFang Li
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  4. XiaoWen Zhou
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  5. JingBo Zhang
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  6. XuePing Li
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  7. XuRui Xiao
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  8. Yuan Lin
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Corresponding author

Correspondence to Yuan Lin.

Additional information

Supported by the Major State Basic Research Development Program of China (Grant No. 2006CB202605), High-Tech Research and Development of China Program (Grant No. 2007AA05Z439), National Natural Science Foundation of China (Grant No. 50221201), and Innovative Foundation of the Center for Molecular Science, Chinese Academy of Sciences (Grant No. CMS-CX200718)

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Chen, J., Hou, J., Li, Y. et al. Fluorescence and sensitization performance of phenylene-vinylene-substituted polythiophene. Chin. Sci. Bull. 54, 1669–1676 (2009). https://doi.org/10.1007/s11434-009-0209-0

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  • DOI: https://doi.org/10.1007/s11434-009-0209-0

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