Premium
Head‐to‐Head Linkage Containing Bithiophene‐Based Polymeric Semiconductors for Highly Efficient Polymer Solar Cells
Author(s) -
Shi Shengbin,
Liao Qiaogan,
Tang Yumin,
Guo Han,
Zhou Xin,
Wang Yulun,
Yang Tingbin,
Liang Yongye,
Cheng Xing,
Liu Feng,
Guo Xugang
Publication year - 2016
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.201603112
Subject(s) - materials science , polymer , planarity testing , alkoxy group , alkyl , solubility , polymer chemistry , photochemistry , chemical engineering , organic chemistry , crystallography , composite material , chemistry , engineering
Narrow bandgap (1.37–1.46 eV) polymers incorporating a head‐to‐head linkage containing 3‐alkoxy‐3′‐alkyl‐2,2′‐bithiophene are synthesized. The head‐to‐head linkage enables polymers with sufficient solubility and the noncovalent sulfur–oxygen interaction affords polymers with high degree of backbone planarity and film ordering. When integrated into polymer solar cells, the polymers show a promising power conversion efficiency approaching 10%.