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Ordering Effects in Benzo[1,2‐ b :4,5‐ b ′]difuran‐thieno[3,4‐ c ]pyrrole‐4,6‐dione Polymers with >7% Solar Cell Efficiency
Author(s) -
Warnan Julien,
Cabanetos Clément,
Labban Abdulrahman El,
Hansen Michael Ryan,
Tassone Christopher,
Toney Michael F.,
Beaujuge Pierre M.
Publication year - 2014
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.201305344
Subject(s) - pyrrole , materials science , polymer , polymer solar cell , molecule , small molecule , energy conversion efficiency , combinatorial chemistry , organic chemistry , optoelectronics , chemistry , biochemistry , composite material
Benzo[1,2‐ b :4,5‐ b' ]difuran–thieno[3,4‐ c ]pyrrole‐4,6‐dione (PBDFTPD) polymers prepared by microwave‐assisted synthesis can achieve power conversion efficiencies (PCEs) >7% in bulk‐heterojunction solar cells with phenyl‐C61/71‐butyric acid methyl ester (PCBM). In “as‐cast” PBDFTPD‐based devices solution‐processed without a small‐molecule additive, high PCEs can be obtained in spite of the weak propensity of the polymers to self‐assemble and form π‐aggregates in thin films.