title: Fluorine substitution enhanced photovoltaic performance of a D-A(1)-D-A(2) copolymer.
abstract: A new alternating donor-acceptor (D-A1-D-A2) copolymer containing two electron-deficient moieties, isoindigo and quinoxaline, was synthesized. The photovoltaic performance of this polymer could be improved by incorporating fluorine atoms into the quinoxaline units, resulting in an efficiency of 6.32%. This result highlights the attractive promise of D-A1-D-A2 copolymers for high-performance bulk heterojunction solar cells.
authors.affiliation: Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China. zhuwg18@126.com.
authors.forename: Dongfeng
authors.initials: D
authors.lastname: Dang
authors.forename: Weichao
authors.initials: W
authors.lastname: Chen
authors.forename: Renqiang
authors.initials: R
authors.lastname: Yang
authors.forename: Weiguo
authors.initials: W
authors.lastname: Zhu
authors.forename: Wendimagegn
authors.initials: W
authors.lastname: Mammo
authors.forename: Ergang
authors.initials: E
authors.lastname: Wang
mesh_terms: D005461:Fluorine / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory; D011810:Quinoxalines / Q000737:chemistry; D012993:Solar Energy
chemical_list: D007211:Indoles; D011108:Polymers; D011810:Quinoxalines; D005461:Fluorine; C049010:isoindigotin