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Intramolecular Donor–Acceptor Regioregular Poly(hexylphenanthrenyl‐imidazole thiophene) Exhibits Enhanced Hole Mobility for Heterojunction Solar Cell Applications
Author(s) -
Chang YaoTe,
Hsu SoLin,
Su MingHsin,
Wei KungHwa
Publication year - 2009
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.200802379
Subject(s) - materials science , intramolecular force , imidazole , polythiophene , thiophene , photochemistry , electron mobility , polymer solar cell , organic solar cell , acceptor , energy conversion efficiency , solar cell , electron donor , side chain , electron acceptor , heterojunction , optoelectronics , polymer , conductive polymer , catalysis , organic chemistry , chemistry , physics , composite material , condensed matter physics
PHPIT, a new kind of intramolecular donor–acceptor side‐chain‐tethered hexylphenanthrenyl‐imidazole polythiophene is synthesized. The more‐balanced electron and hole mobilities and the enhanced visible‐ and internal‐light absorptions in the devices consisting of annealed PHPIT/PCBM blends both contribute to a much higher short‐circuit current density, which in turn led to a power conversion efficiency as high as 4.1%.