title: A hyperbranched conjugated polymer as the cathode interlayer for high-performance polymer solar cells.
abstract: An alcohol-soluble hyperbranched conjugated polymer HBPFN with a dimethylamino moiety is synthesized and used as a cathode interlayer. A PCE of 7.7% is obtained for PBDTTT-C-T/PC71 BM based solar cells. No obvious interfacial dipole is found at the interface between the active layer and HBPFN however, an interfacial dipole with the cathode could be one of the reasons for the enhanced performance.
authors.affiliation: Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China; CSIRO Materials Science and Engineering, Clayton, VIC, 3168, Australia; University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Menglan
authors.initials: M
authors.lastname: Lv
authors.forename: Shusheng
authors.initials: S
authors.lastname: Li
authors.forename: Jacek J
authors.initials: JJ
authors.lastname: Jasieniak
authors.forename: Jianhui
authors.initials: J
authors.lastname: Hou
authors.forename: Jin
authors.initials: J
authors.lastname: Zhu
authors.forename: Zhan'ao
authors.initials: Z
authors.lastname: Tan
authors.forename: Scott E
authors.initials: SE
authors.lastname: Watkins
authors.forename: Yongfang
authors.initials: Y
authors.lastname: Li
authors.forename: Xiwen
authors.initials: X
authors.lastname: Chen
mesh_terms: D011211:Electric Power Supplies; D004566:Electrodes; D005449:Fluorenes / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D011789:Quantum Theory; D012993:Solar Energy; D013876:Thiophenes / Q000737:chemistry
chemical_list: D005449:Fluorenes; D011108:Polymers; D011137:Polystyrenes; D013876:Thiophenes; C533756:poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
keywords: cathode interlayer; hyperbranched polymer; polymer solar cells; scanning kelvin probe