Journal
ADVANCED MATERIALS
Volume 27, Issue 43, Pages 6969-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201503023
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Funding
- National Natural Science Foundation of China (NSFC) [51473009, 51273203, 51261160496]
- International Science and Technology Cooperation Program of China [2014DFA52820]
- National Natural Science Foundation of China (NSFC)/Research Grants Council (RGC) grant [N_HKU709/12]
- 111 project [B14009]
- Fundamental Research Funds for the Central Universities [YWF-14-HXXY-014, YWF-15-HHXY-003]
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A novel 2D benzodifuran (BDF)-based copolymer (PBDF-T1) is synthesized. Polymer solar cells fabricated with PBDF-T1 show high power conversion efficiency of 9.43% and fill factor of 77.4%, which is higher than the performance of its benzothiophene (BDT) counterpart (PBDT-T1). These results provide important progress for BDF-based copolymers and demonstrate that BDF-based copolymers can be competitive with the well-studied BDT counterparts via molecular structure design and device optimization.
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