Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 34, Pages 11156-11162Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b06414
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Funding
- National Natural Science Foundation of China (NSFC) [21225209, 91427303, 21190032, 51473009, 51273203]
- International Science & Technology Cooperation Program of China [2014DFA52820]
- 973 Program [2011CB932301, 2012CB932903, 2014CB643502]
- NSFC-DFG [TRR61]
- Chinese Academy of Sciences [XDB12010100]
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A novel perylene bisimide (FBI) dimer-based acceptor material, SdiPBI-S, was developed. Conventional bulk-heterojunction (BHJ) solar cells based on SdiPBI-S and the wide-band-gap polymer PDBT-T1 show a high power conversion efficiency (PCE) of 7.16% with a high open-circuit voltage of 0.90 V, a high short-circuit current density of 11.98 mA/cm(2), and an impressive fill factor of 66.1%. Favorable phase separation and balanced carrier mobilites in the BHJ films account for the high photovoltaic performance. The results demonstrate that fine-tuning of FBI-based materials is a promising way to improve the PCEs of non-fullerene BHJ organic solar cells.
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