Аннотация:We synthesized a new wide bandgap material, P1, and compared its optical and electrochemical properties with the well-known copolymer PM6. Upon employing the narrow bandgap non-fullerene acceptor Y6, the organic solar cells based on P1 and PM6 under identical processing conditions exhibited overall power conversion efficiencies of 13.48% and 14.81%, respectively. Utilizing P1 as the secondary donor led to the optimized ternary organic solar cell achieving a power conversion efficiency of 17.11%, exceeding that of the binary counterparts.