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Zhao Li, Sai-Wing Tsang, Xiaomei Du, Ludmila Scoles, Gilles Robertson, Yanguang Zhang, Floyd Toll, Ye Tao, Jianping Lu and Jianfu Ding Alternating Copolymers of Cyclopenta[2,1-b;3,4-b′]dithiophene and Thieno[3,4-c]pyrrole-4,6-dione for High-Performance Polymer Solar Cells Advanced Functional Materials 21

Article first published online: 4 JUL 2011 | DOI: 10.1002/adfm.201100708

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A series of alternating copolymers of cyclopenta[2,1-b:3,4-b]dithiophene and thieno[3,4- c]pyrrole-4,6-dione, (PCPDTTPD) are designed and synthesized. These polymers show a low-enery band gap and a broad absorption. Polymer solar cell devices based on their blends with PC61BM and PC71BM show a high power conversion efficiency up to 5.5% and 6.4%, respectively.

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