Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 8, Issue 2, Pages 520-525Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ee02990a
Keywords
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Funding
- National Basic Research Program of China (973 Program) [2013CB834701]
- Hong Kong Innovation and Technology Commission [ITS/354/12]
- Hong Kong Research Grants Council [T23-407/13N, N_HKUST623/13, 606012]
- National Science Foundation of China [21374090]
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Here we report high-performance small molecule acceptor (SMA)-based organic solar cells (OSCs) enabled by the combination of a difluorobenzothiadiazole donor polymer named PffBT4T-2DT and a SMA named SF-PDI2. It is found that SF-PDI2 matches particularly well with PffBT4T-2DT and non-fullerene OSCs with an impressive V-OC of 0.98 V, and a high power conversion efficiency of 6.3% is achieved. Our study shows that PffBT4T-2DT is a promising donor material for SMA-based OSCs, and the selection of a matching SMA is also important to achieve the best OSC performance.
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