期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 13, 期 3, 页码 958-967出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ee04020j
关键词
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资金
- National Natural Science Foundation of China [61675017, 61975006, 21572171]
- Beijing Natural Science Foundation [4192049]
- Shenzhen Peacock Plan [KQTD20170330110107046]
The ternary strategy exhibits great potential in optimizing the photon harvesting and phase separation of active layers. In this work, non-fullerene MF1 was selected as the third component to prepare efficient ternary organic solar cells (OSCs) by finely optimizing the MF1 content in the acceptors. The optimized power conversion efficiency (PCE) of 15.31% is achieved in the ternary OSCs with 20 wt% MF1 content in the acceptors and 100 nm active layer thickness, also exhibiting a relatively high fill factor (FF) of 78.05%. The relatively high FF indicates efficient charge transport and collection in the optimized ternary OSCs, which should be beneficial to achieve efficient thick-film OSCs. It is highlighted that a PCE of 14.57% is achieved in the optimized ternary OSCs with 300 nm thick active layers compatible with the roll-to-roll (R2R) large-scale printing process. To date, high performance thick-film ternary non-fullerene OSCs have seldom been reported. This work indicates that the thick-film ternary strategy has great potential in achieving efficient large-scale OSCs.
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