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Ternary strategy has been demonstrated as a promising method to further boost the performance of organic solar cells (OSCs). Herein, an efficient polymer donor S3 was synthesized and incorporated into...

A 14.57% PCE is achieved in optimized ternary OSCs with 300 nm active layers compatible with R2R large-scale printing process, indicating that thick-film ternary strategy has great potential in achieving efficient large-scale OSCs.

By integrating the advantages of the materials and two binary PSCs into one cell, a PCE of 13.73% is achieved in ternary PSCs.