title: A New Nonfullerene Electron Acceptor with a Ladder Type Backbone for High-Performance Organic Solar Cells.
abstract: Nonfullerene acceptor FDICTF (2,9-bis(2methylene-(3-(1,1-dicyanomethylene)indanone))-7,​12-​dihydro-​4,​4,​7,​7,​12,​12-​hexaoctyl-​4H-​cyclopenta[2″,​1″:5,​6;3″,​4″:5',​6']​diindeno[1,​2-​b:1',​2'-​b']dithiophene) modified by fusing the fluorene core in a precursor, yields 10.06% high power conversion efficiency, and demonstrates that the ladder and fused core backbone in A-D-A structure molecules is an effective design strategy for high-performance nonfullerene acceptors.
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Nailiang
authors.initials: N
authors.lastname: Qiu
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Huijing
authors.initials: H
authors.lastname: Zhang
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Xiangjian
authors.initials: X
authors.lastname: Wan
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Chenxi
authors.initials: C
authors.lastname: Li
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Ke
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Huanran
authors.initials: H
authors.lastname: Feng
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Kan
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Hongtao
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Lu
authors.affiliation: The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.|School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300071, China.
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Chen
keywords: high efficiency; ladder type structures; nonfullerene acceptor; organic solar cells