Largely Enhanced Efficiency with a PFN/Al Bilayer Cathode in High Efficiency Bulk Heterojunction Photovoltaic Cells with a Low Bandgap Polycarbazole Donor

Zhicai He(South China University of Technology), Chen Zhang(South China University of Technology), Xiaofeng Xu(South China University of Technology), Lianjie Zhang(South China University of Technology), Liang Huang(South China University of Technology), Junwu Chen(South China University of Technology), Hongbin Wu(South China University of Technology), Yong Cao(South China University of Technology)
Advanced Materials
May 19, 2011
10.1002/adma.201101319
Cited by 246

Abstract

Quinoxaline-containing poly(4,5-ethylene-2,7-carbazole) (PECz-DTQx) shows a high efficiency of 6.07% in solar cells with a PFN/Al bilayer cathode. This is higher than the efficiency achieved with sole Al (3.99%) or with Ca/Al (4.52%) cathodes. A bilayer cathode could be valuable in device configurations to achieve high efficiency in combination with a high-performance polymer donor. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

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