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Influence of PEDOT:PSS film doped with sorbitol on performances of organic solar cells

Gao Cong-Jie Liu Jun-Cheng Li Jiao

Influence of PEDOT:PSS film doped with sorbitol on performances of organic solar cells

Gao Cong-Jie, Liu Jun-Cheng, Li Jiao
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  • Abstract views:  5353
  • PDF Downloads:  1129
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  • Received Date:  18 August 2010
  • Accepted Date:  09 October 2010
  • Published Online:  15 July 2011

Influence of PEDOT:PSS film doped with sorbitol on performances of organic solar cells

  • 1. (1)College of Chemistry and Chemical Engineering , Ocean University of China, Qingdao 266100, China; (2)School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China; (3)School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China;College of Chemistry and Chemical Engineering , Ocean University of China, Qingdao 266100, China

Abstract: In this article, the PEDOT:PSS doped with sorbitol film is fabricated on an ITO substrate by blending-spin coating method and used as a hole-extraction layer for organic solar cell (OSC). The effect of sorbitol concentration on the photovoltaic performance of the device is investigated based on P3HT:PCBM blend. Compared with a pristine device (i.e., without sorbitol), the sorbitol-doped (8wt %) OSC shows that the short-circuit current density, the fill factor and the power conversion efficiency are inereased from 8.82 to 9.03mA/cm2, 0.43 to 0.474 and 2.12% to 2.39 % (i.e., by about 13%), respectively. The canse of the improvement on performance of the device is discussed, showing that the increase in conductivity and transmittance of composite films is due to the improvement on OSC performances achieved through the incorporation of sorbitol into hole-extraction layer of PEDOT:PSS. The former leads to a lower series resistance of the device, while the latter gives rise to the improvement on the photo-induced carriers of the photovoltaics cells.

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