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Design and Synthesis of a Low Bandgap Small Molecule Acceptor for Efficient Polymer Solar Cells
Author(s) -
Yao Huifeng,
Chen Yu,
Qin Yunpeng,
Yu Runnan,
Cui Yong,
Yang Bei,
Li Sunsun,
Zhang Kai,
Hou Jianhui
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.201602642
Subject(s) - materials science , band gap , conjugated system , polymer , polymer solar cell , homo/lumo , acceptor , fullerene , alkoxy group , molecule , tandem , organic solar cell , energy conversion efficiency , electron acceptor , small molecule , hybrid solar cell , photochemistry , optoelectronics , nanotechnology , organic chemistry , alkyl , chemistry , physics , composite material , condensed matter physics , biochemistry
A novel non‐fullerene acceptor , possessing a very low bandgap of 1.34 eV and a high‐lying lowest unoccupied molecular orbital level of −3.95 eV, is designed and synthesized by introducing electron‐donating alkoxy groups to the backbone of a conjugated small molecule. Impressive power conversion efficiencies of 8.4% and 10.7% are obtained for fabricated single and tandem polymer solar cells.