Recent Progress of Ternary Organic Solar Cells based on Solution Processed Non-fullerene Acceptors
2020
The ternary blending strategy of introducing a third component into the binary organic solar cells (BOSCs) is a feasible and efficient strategy to optimize the performance of BOSCs. Ternary organic solar cells (TOSCs) have adjustable absorption band for matching the solar light, easy-adjusted photoelectric performance and tunable micro-morphology, therefore, becoming a hot spot in the field of OSCs. Currently, the power conversion efficiency (PCE) of TOSCs has boosted over 17%. Herein, we give a review on the four possible working mechanisms of TOSCs, the roles of the third component in TOSCs, the recent progress in different kinds of active layer materials of TOSCs based on solution-processed non-fullerene acceptors (NFAs) and the recent advances in the large-area and long-term stability of TOSCs. It can provide some guidance for the further development of TOSCs. Finally, to help the researchers to understand the future of TOSCs, the challenges and prospects of TOSCs based on solution processible NFAs have been provided.
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