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Effects of solvent-treated PEDOT:PSS on organic photovoltaic devices

Author

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  • Hu, Ziyang
  • Zhang, Jianjun
  • Zhu, Yuejin

Abstract

We investigated the effects of poly(3, 4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films treated with methoxyethanol (ME) on the performance of polymer solar cells, and the effects were compared with the PEDOT:PSS films treated with dimethyl sulfoxide (DMSO). In particular, a correlation between the performance parameters of polymer solar cells and changes in the conductivity, surface morphology, and work function of treated PEDOT:PSS was investigated as a function of an added ME and DMSO ratio. The enhanced conductivity of the treated PEDOT:PSS improved the short circuit current and reduced the series resistance of solar cells. While the enhanced conductivity and surface roughness of the treated PEDOT:PSS also induced the large leakage current and sacrificed the device FF. The open circuit voltage was almost constant, although the slightly reduced voltage was observed.

Suggested Citation

  • Hu, Ziyang & Zhang, Jianjun & Zhu, Yuejin, 2014. "Effects of solvent-treated PEDOT:PSS on organic photovoltaic devices," Renewable Energy, Elsevier, vol. 62(C), pages 100-105.
    • Handle: RePEc:eee:renene:v:62:y:2014:i:c:p:100-105
    DOI: 10.1016/j.renene.2013.06.042
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    1. Jia, Yuehua & Yang, Liying & Qin, Wenjing & Yin, Shougen & Zhang, Fengling & Wei, Jun, 2013. "Efficient polymer bulk heterojunction solar cells with cesium acetate as the cathode interfacial layer," Renewable Energy, Elsevier, vol. 50(C), pages 565-569.
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