Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (12): 128505-128505.doi: 10.1088/1674-1056/22/12/128505

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Organic photovoltaic cells with copper (Ⅱ) tetra-methyl substituted phthalocyanine

许宗祥a, Roy V. A. L.b   

  1. a Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China;
    b Center of Super Diamond and Advanced Films (COSDAF), Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
  • 收稿日期:2013-06-05 修回日期:2013-07-11 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the Special Funds for the Development of Strategic Emerging Industries in Shenzhen City, China (Grant No. JCYJ20120830154526537), Start-up Funding of the South University of Science and Technology of China, and the Strategic Research Grant of the City University of Hong Kong (Grant No. 7002724).

Organic photovoltaic cells with copper (Ⅱ) tetra-methyl substituted phthalocyanine

Xu Zong-Xiang (许宗祥)a, Roy V. A. L.b   

  1. a Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China;
    b Center of Super Diamond and Advanced Films (COSDAF), Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
  • Received:2013-06-05 Revised:2013-07-11 Online:2013-10-25 Published:2013-10-25
  • Contact: Xu Zong-Xiang E-mail:xu.zx@sustc.edu.cn
  • Supported by:
    Project supported by the Special Funds for the Development of Strategic Emerging Industries in Shenzhen City, China (Grant No. JCYJ20120830154526537), Start-up Funding of the South University of Science and Technology of China, and the Strategic Research Grant of the City University of Hong Kong (Grant No. 7002724).

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摘要： Efficient heterojunction organic photovoltaic (OPV) cells are fabricated based on copper tetra-methyl phthalocyanine (CuMePc) as donor and fullerene (C60) as acceptor. The power conversion efficiency of CuMePc/C60 OPV cell (2.52%) is increased by 88% compared with that of the non-peripheral substituted copper phthalocyanine (CuPc)/C60 OPV cell (1.34%). The introduction of methyl substituent leads to stronger π–π interaction of CuMePc (～ 3.5 Å) than that of CuPc (～ 3.8 Å). The efficiency improvement is attributed to the enhanced carrier mobility of CuMePc thin film (1.1×10-3 cm2/V·s) and better film morphology by introducing methyl groups into the periphery of CuPc molecule.

关键词: organic photovoltaic cell, copper (Ⅱ) tetra-methyl substituted phthalocyanine, π–, π stacking, GIXRD

Abstract: Efficient heterojunction organic photovoltaic (OPV) cells are fabricated based on copper tetra-methyl phthalocyanine (CuMePc) as donor and fullerene (C60) as acceptor. The power conversion efficiency of CuMePc/C60 OPV cell (2.52%) is increased by 88% compared with that of the non-peripheral substituted copper phthalocyanine (CuPc)/C60 OPV cell (1.34%). The introduction of methyl substituent leads to stronger π–π interaction of CuMePc (～ 3.5 Å) than that of CuPc (～ 3.8 Å). The efficiency improvement is attributed to the enhanced carrier mobility of CuMePc thin film (1.1×10-3 cm2/V·s) and better film morphology by introducing methyl groups into the periphery of CuPc molecule.

Key words: organic photovoltaic cell, copper (Ⅱ) tetra-methyl substituted phthalocyanine, π–π stacking, GIXRD

中图分类号:  (Optoelectronic devices)

  • 85.60.-q
73.61.Jc (Amorphous semiconductors; glasses)