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A Facile Method to Enhance Photovoltaic Performance of Benzodithiophene‐Isoindigo Polymers by Inserting Bithiophene Spacer
Author(s) -
Ma Zaifei,
Dang Dongfeng,
Tang Zheng,
Gedefaw Desta,
Bergqvist Jonas,
Zhu Weiguo,
Mammo Wendimagegn,
Andersson Mats R.,
Inganäs Olle,
Zhang Fengling,
Wang Ergang
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201301455
Subject(s) - materials science , thiophene , polymer , conjugated system , photovoltaic system , acceptor , organic solar cell , polymer solar cell , polymer chemistry , chemical engineering , organic chemistry , composite material , chemistry , engineering , ecology , physics , biology , condensed matter physics
A series of conjugated polymers containing benzodithiophene as donor and isoindigo as acceptor with no, one, two and three thiophene spacer groups is synthesized and characterized. The polymer with bithiophene as a spacer has a superior efficiency of 7.31% in solar cells. This demonstrates an important design strategy to produce polymers for high‐performance solar cells by inserting thiophene spacer groups.