中国物理B ›› 2008, Vol. 17 ›› Issue (8): 3143-3148.doi: 10.1088/1674-1056/17/8/062

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Self-organization effect in poly(3-hexylthiophene): methanofullerenes solar cells

彭俊彪1, 於黄忠2   

  1. (1)Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials,\\ South China University of Technology, Guangzhou 510640, China; (2)Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials,\\ South China University of Technology, Guangzhou 510640, China;School of Physics , South China University of Technology, Guangzhou 510640, China
  • 收稿日期:2007-10-17 修回日期:2008-01-09 出版日期:2008-08-20 发布日期:2008-08-20
  • 基金资助:
    Project supported by the National `973' Project of China (Grant No 2002CB613405), the National Natural Science Foundation of China (Grant No 90201023) and the Natural Science Foundation of South China University of Technology (Grant No E5040910).

Self-organization effect in poly(3-hexylthiophene): methanofullerenes solar cells

Yu Huang-Zhong(於黄忠)a)b)† and Peng Jun-Biao(彭俊彪)a)   

  1. a Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials, South China University of Technology, Guangzhou 510640, China; b School of Physics , South China University of Technology, Guangzhou 510640, China
  • Received:2007-10-17 Revised:2008-01-09 Online:2008-08-20 Published:2008-08-20
  • Supported by:
    Project supported by the National `973' Project of China (Grant No 2002CB613405), the National Natural Science Foundation of China (Grant No 90201023) and the Natural Science Foundation of South China University of Technology (Grant No E5040910).

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摘要： This paper studies the self-organization of the polymer in solar cells based on poly(3-hexylthiophene): [6, 6]-phenyl C$_{61}$-butyric acid methyl ester by controlling the growth rate of active layer. These blend films are characterized by UV-vis absorption spectroscopy, charge-transport dark $J-V$ curve, x-ray diffraction pattern curve, and atomic force microscopy. The results indicate that slowing down the drying process of the wet films leads to an enhanced self-organization, which causes an increased hole transport. Increased incident light absorption, higher carrier mobility, and balanced carrier transport in the active layer explain the enhancement in the device performance, the power conversion efficiency of 3.43{\%} and fill factor up to 64.6{\%} are achieved under Air Mass 1.5, 100\,mW/cm$^{2}$.

关键词: solar cell, polymer, slow drying, performance

Abstract: This paper studies the self-organization of the polymer in solar cells based on poly(3-hexylthiophene): [6, 6]-phenyl C$_{61}$-butyric acid methyl ester by controlling the growth rate of active layer. These blend films are characterized by UV-vis absorption spectroscopy, charge-transport dark $J-V$ curve, x-ray diffraction pattern curve, and atomic force microscopy. The results indicate that slowing down the drying process of the wet films leads to an enhanced self-organization, which causes an increased hole transport. Increased incident light absorption, higher carrier mobility, and balanced carrier transport in the active layer explain the enhancement in the device performance, the power conversion efficiency of 3.43% and fill factor up to 64.6%are achieved under Air Mass 1.5, 100 mW/cm$^{2}$.

Key words: solar cell, polymer, slow drying, performance

中图分类号:  (Photoelectric conversion)

  • 84.60.Jt
73.50.Dn (Low-field transport and mobility; piezoresistance) 73.50.Pz (Photoconduction and photovoltaic effects) 73.61.Ph (Polymers; organic compounds) 78.40.Me (Organic compounds and polymers) 78.66.Qn (Polymers; organic compounds)