Non-fullerene small molecule acceptors based on perylene diimides

Abstract

Great advances in the subfield of non-fullerene acceptors have been achieved in the last few years. Perylene diimides are among the most investigated due to their excellent electron mobility, high electron affinity and feasible chemical modification. In this review, we summarize reports of small molecule acceptors based on perylene diimides in recent years and highlight the effect of molecular structure on their performance in bulk heterojunction organic solar cells with the hope of providing criteria for designing acceptors based on perylene diimides.