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High‐Efficiency Large‐Bandgap Material for Polymer Solar Cells
Author(s) -
Wei Hedi,
Chao YiHsiang,
Kang Chong,
Li Cuihong,
Lu Heng,
Gong Xue,
Dong Huanli,
Hu Wenping,
Hsu ChainShu,
Bo Zhishan
Publication year - 2015
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201400527
Subject(s) - materials science , band gap , energy conversion efficiency , polymer , thiophene , conjugated system , polymer solar cell , acceptor , condensation polymer , polymer chemistry , electron mobility , chemical engineering , optoelectronics , chemistry , organic chemistry , composite material , condensed matter physics , physics , engineering
High‐molecular‐weight conjugated polymer HD‐PDFC‐DTBT with N ‐(2‐hexyldecyl)‐3,6‐difluorocarbazole as the donor unit, 5,6‐bis(octyloxy)benzothiadiazole as the acceptor unit, and thiophene as the spacer is synthesized by Suzuki polycondensation. HD‐PDFC‐DTBT shows a large bandgap of 1.96 eV and a high hole mobility of 0.16 cm 2 V −1 s −1 . HD‐PDFC‐DTBT:PC 71 BM‐based inverted polymer solar cells (PSCs) give a power conversion efficiency (PCE) of 7.39% with a V oc of 0.93 V, a J sc of 14.11 mA cm −2 , and an FF of 0.56.