Small, Год журнала: 2025, Номер unknown
Опубликована: Май 19, 2025
Abstract In this study, two molecules, WLA1 and WLA2, with the same molecular backbone but different degrees of inside‐chain chlorination, are designed synthesized to elucidate effects chlorine substitution strategies on morphology small‐molecule acceptors blended films. The chlorinated WLA2 enhances crystallinity stacking. For binary organic solar cells (OSCs), corresponding films exhibit suitable phase separation crystallinity. Therefore, WLA2‐based OSCs achieve a power conversion efficiency (PCE) 16.80%, which is higher than that WLA1‐based (16.21%). ternary blending strategy, incorporated into D18:L8‐BO system as third component, introduction acceptor further improves facilitates induction fiber formation. have significantly exciton diffusion charge transport efficiencies compared L8‐BO WLA1. PCE 19.64%. This study emphasizes great potential combining an molecule strategy prepare high‐performance OSCs.
Язык: Английский