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Fullerene Derivative‐Doped Zinc Oxide Nanofilm as the Cathode of Inverted Polymer Solar Cells with Low‐Bandgap Polymer (PTB7‐Th) for High Performance
Author(s) -
Liao SihHao,
Jhuo HongJyun,
Cheng YuShan,
Chen ShowAn
Publication year - 2013
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.201301476
Subject(s) - materials science , cathode , fullerene , doping , polymer , energy conversion efficiency , polymer solar cell , band gap , active layer , optoelectronics , chemical engineering , layer (electronics) , nanotechnology , composite material , organic chemistry , chemistry , engineering , thin film transistor
Modification of a ZnO cathode by doping it with a hydroxyl‐containing derivative — giving a ZnO‐C 60 cathode — provides a fullerene‐derivative‐rich surface and enhanced electron conduction. Inverted polymer solar cells with the ZnO‐C 60 cathode display markedly improved power conversion efficiency compared to those with a pristine ZnO cathode, especially when the active layer includes the low‐bandgap polymer PTB7‐Th.