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

He Zhicai | Zendy; Zhang Chen | Zendy; Xu Xiaofeng | Zendy; Zhang Lianjie | Zendy; Huang Liang | Zendy; Chen Junwu | Zendy; Wu Hongbin | Zendy; Cao Yong | Zendy

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

Author(s) -

He Zhicai,

Zhang Chen,

Xu Xiaofeng,

Zhang Lianjie,

Huang Liang,

Chen Junwu,

Wu Hongbin,

Cao Yong

Publication year - 2011

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201101319

Subject(s) - cathode , materials science , bilayer , photovoltaic system , carbazole , optoelectronics , heterojunction , polymer , polymer solar cell , energy conversion efficiency , photochemistry , membrane , composite material , electrical engineering , chemistry , engineering , biochemistry

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.

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