Fluorine substitution enhanced photovoltaic performance of a D-A 1-D-A2 copolymer
Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China; Department of Chemical and Biological Engineering/Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China; Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
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-A 1-D-A2 copolymers for high-performance bulk heterojunction solar cells. © 2013 The Royal Society of Chemistry.
copolymer; fluorine; quinoxaline; absorption; article; atom; atomic force microscopy; density functional theory; electric potential; electrical equipment; solar cell; substitution reaction; synthesis; Fluorine; Indoles; Polymers; Quantum Theory; Quinoxalines; Solar Energy
51173199, NSFC, National Natural Science Foundation of China