title: Organic Solar Cells Based on a 2D Benzo[1,2-b:4,5-b']difuran-Conjugated Polymer with High-Power Conversion Efficiency.
abstract: A novel 2D benzodifuran (BDF)-based copolymer (PBDF-T1) is synthesized. Polymer solar cells fabricated with PBDF-T1 show high power conversion efficiency of 9.43% and fill factor of 77.4%, which is higher than the performance of its benzothiophene (BDT) counterpart (PBDT-T1). These results provide important progress for BDF-based copolymers and demonstrate that BDF-based copolymers can be competitive with the well-studied BDT counterparts via molecular structure design and device optimization.
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Huo
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Liu
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Bingbing
authors.initials: B
authors.lastname: Fan
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Zhiyuan
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Sun
authors.affiliation: The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province, 450001, P. R. China.
authors.forename: Donghui
authors.initials: D
authors.lastname: Wei
authors.affiliation: The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province, 450001, P. R. China.
authors.forename: Mingming
authors.initials: M
authors.lastname: Yu
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Yunqi
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Yanming
authors.initials: Y
authors.lastname: Sun
mesh_terms: D001572:Benzofurans / Q000737:chemistry*; D011211:Electric Power Supplies; D008958:Models, Molecular; D008968:Molecular Conformation; D011108:Polymers / Q000737:chemistry*; D013472:Sunlight
chemical_list: D001572:Benzofurans; D011108:Polymers
keywords: benzodifuran; benzodithiophene; efficiency; fill factor; organic solar cells