Synthesis and Photovoltaic Properties of Conjugated Copolymers with Benzo[1,2-b:4,5-b′]dithiophene and Bis(thiophene)phthalimide Units

被引:25
|
作者
Zhang, Guobing [1 ]
Fu, Yingying [2 ]
Zhang, Qing [1 ]
Xie, Zhiyuan [2 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, Shanghai 200240, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
关键词
bis(thiophene)phthalimide; conjugated polymers; open-circuit voltage; photovoltaics; POLYMER SOLAR-CELLS; PERFORMANCE; THIOPHENE; BANDGAP;
D O I
10.1002/macp.201000430
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Two new donor/acceptor copolymers PBDTPhBT1 and PBDTPhBT2 with alternating benzodithiophene (BDT) and bisthiophene-phthalimide (PhBT) units were synthesized by Stille coupling reaction. The copolymers showed identical optical bandgaps of 1.98 eV. The HOMO energy levels are -5.35 and -5.32 eV for PBDTPhBT1 and PBDTPhBT2, respectively. The bulk heterojunction solar cell devices based on these copolymers as donors and PC71BM as acceptor displayed high open-circuit voltages of 0.90-0.93 V and achieved power conversion efficiency of 1.54% under the illumination of AM 1.5, 100 mW.cm-2
引用
收藏
页码:2596 / 2601
页数:6
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