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GUAN Wen-Li, . Exciton formation with interchain couplings in organic polymers[J]. Journal of South China Normal University (Natural Science Edition), 2008, 1(4): 53-59 .
Citation: GUAN Wen-Li, . Exciton formation with interchain couplings in organic polymers[J]. Journal of South China Normal University (Natural Science Edition), 2008, 1(4): 53-59 .

Exciton formation with interchain couplings in organic polymers

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  • Corresponding author:

    GUAN Wen-Li

  • Received Date: May 19, 2008
  • Revised Date: June 21, 2008
  • Based on the framework of the tight binding approach, the formation of an exciton in inter-coupled polymer chains is studied. Both a localized exciton in one single chain and a spread exciton between chains are obtained. It is found that an excited electron-hole pair is more inclined to evolve into a localized exciton. By analyzing the effect of the interchain couplings on the exciton binding energy, it is shown that the photoluminescence efficiency of the polymer in a dilute solution state is higher than that in a solid state.

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