title: High-Performance Solution-Processed Non-Fullerene Organic Solar Cells Based on Selenophene-Containing Perylene Bisimide Acceptor.
abstract: Non-fullerene acceptors have recently attracted tremendous interest because of their potential as alternatives to fullerene derivatives in bulk heterojunction organic solar cells. However, the power conversion efficiencies (PCEs) have lagged far behind those of the polymer/fullerene system, mainly because of the low fill factor (FF) and photocurrent. Here we report a novel perylene bisimide (PBI) acceptor, SdiPBI-Se, in which selenium atoms were introduced into the perylene core. With a well-established wide-band-gap polymer (PDBT-T1) as the donor, a high efficiency of 8.4% with an unprecedented high FF of 70.2% is achieved for solution-processed non-fullerene organic solar cells. Efficient photon absorption, high and balanced charge carrier mobility, and ultrafast charge generation processes in PDBT-T1:SdiPBI-Se films account for the high photovoltaic performance. Our results suggest that non-fullerene acceptors have enormous potential to rival or even surpass the performance of their fullerene counterparts.
authors.affiliation: Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University , Beijing 100191, PR China.|Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China.|University of Chinese Academy of Sciences , Beijing 100049, PR China.
authors.forename: Dong
authors.initials: D
authors.lastname: Meng
authors.affiliation: Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University , Beijing 100191, PR China.|Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China.|University of Chinese Academy of Sciences , Beijing 100049, PR China.
authors.forename: Dan
authors.initials: D
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510641, PR China.|Center for Polymers and Organic Solids, University of California , Santa Barbara, California 93106, United States.
authors.forename: Chengmei
authors.initials: C
authors.lastname: Zhong
authors.affiliation: Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University , Beijing 100191, PR China.
authors.forename: Tao
authors.initials: T
authors.lastname: Liu
authors.affiliation: Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University , Beijing 100191, PR China.
authors.forename: Bingbing
authors.initials: B
authors.lastname: Fan
authors.affiliation: Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University , Beijing 100191, PR China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Huo
authors.affiliation: Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
authors.affiliation: Department of Chemistry and Institute for Materials Design, Hanyang University , Seoul 133-791, South Korea.
authors.forename: Hyosung
authors.initials: H
authors.lastname: Choi
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 689-798, South Korea.
authors.forename: Taehyo
authors.initials: T
authors.lastname: Kim
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 689-798, South Korea.
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University , Beijing 100191, PR China.
authors.forename: Yanming
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, PR China.
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University , Beijing 100191, PR China.|Center for Polymers and Organic Solids, University of California , Santa Barbara, California 93106, United States.
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Heeger