The improved performance in the ternary bulk heterojunction solar cells

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• 作者：DaShan Qin (1)
  GuiFang Li (1)
  Wei Quan (1)
  Lei Chen (1)
  JinSuo Liu (1)
  JiDong Zhang (2)
  DongHang Yan (2)
  
• 关键词：bulk heterojunction ; organic solar cells ; ternary blend films ; CBP
• 刊名：SCIENCE CHINA Physics, Mechanics & Astronomy
• 出版年：2013
• 出版时间：March 2013
• 年：2013
• 卷：56
• 期：3
• 页码：530-534
• 全文大小：566KB
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• 作者单位：DaShan Qin (1)
  GuiFang Li (1)
  Wei Quan (1)
  Lei Chen (1)
  JinSuo Liu (1)
  JiDong Zhang (2)
  DongHang Yan (2)
  
  1. Institute of Polymer Science and Engineering, School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, China
  2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130023, China
  
• ISSN：1869-1927

文摘

The ternary blend films have been fabricated via adding 4,4-N,N-dicarbazole-biphenyl (CBP, a hole transport material widely used in organic light emitting diodes) into the poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester (P3HT: PCBM). Despite the wide bandgap (3.1 eV) of the CBP, the solar cell utilizing the optimized P3HT:PCBM:CBP blend film showed an increase of 16% in power conversion efficiency and 25% in short-circuit current than the compared standard P3HT:PCBM blend film. This is attributed to the fact that the addition of the CBP could enhance the aggregation of the P3HT chains and thereby reduce the hole-electron recombination at the interface of P3HT and PCBM. We provide a simple, effective way to improve the performance of P3HT based bulk heterojunction solar cells.