Premium
Enhanced Photovoltaic Performance of Indacenodithiophene‐Quinoxaline Copolymers by Side‐Chain Modulation
Author(s) -
Dang Dongfeng,
Chen Weichao,
Himmelberger Scott,
Tao Qiang,
Lundin Angelica,
Yang Renqiang,
Zhu Weiguo,
Salleo Alberto,
Müller Christian,
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.201400680
Subject(s) - quinoxaline , materials science , copolymer , side chain , conjugated system , polymer , photovoltaic system , energy conversion efficiency , solubility , chemical engineering , polymer chemistry , organic chemistry , optoelectronics , composite material , chemistry , electrical engineering , engineering
Two pairs of indacenodithiophene (IDT) and quinoxaline‐based copolymers with meta ‐ or para ‐hexyl‐phenyl side chains on the IDT unit are synthesized. The meta ‐substituted polymers offer better solubility, higher molecular weight for both fluorinated and non‐fluorinated copolymers, and a superior photovoltaic performance with a power conversion efficiency of 7.8%. The side‐chain design strategy presented is an efficient way to produce high performance conjugated polymers for organic electronics.