title: Exploiting Noncovalently Conformational Locking as a Design Strategy for High Performance Fused-Ring Electron Acceptor Used in Polymer Solar Cells.
abstract: We have developed a kind of novel fused-ring small molecular acceptor, whose planar conformation can be locked by intramolecular noncovalent interaction. The formation of planar supramolecular fused-ring structure by conformation locking can effectively broaden its absorption spectrum, enhance the electron mobility, and reduce the nonradiative energy loss. Polymer solar cells (PSCs) based on this acceptor afforded a power conversion efficiency (PCE) of 9.6%. In contrast, PSCs based on similar acceptor, which cannot form a flat conformation, only gave a PCE of 2.3%. Such design strategy, which can make the synthesis of small molecular acceptor much easier, will be promising in developing a new acceptor for high efficiency polymer solar cells.
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Yahui
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Shiyu
authors.initials: S
authors.lastname: Feng
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Miao
authors.initials: M
authors.lastname: Li
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Liangliang
authors.initials: L
authors.lastname: Wu
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Ran
authors.initials: R
authors.lastname: Hou
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Xinjun
authors.initials: X
authors.lastname: Xu
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Xuebo
authors.identifier: 0000-0002-9814-9908
authors.initials: X
authors.lastname: Chen
authors.affiliation: Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University , Beijing 100875, P. R. China.
authors.forename: Zhishan
authors.identifier: 0000-0003-0126-7957
authors.initials: Z
authors.lastname: Bo