Tuning of the conformation of asymmetric nonfullerene acceptors for efficient organic solar cells

In this work, three dithieno[3,2-b:2′,3′-d]pyrrol fused-ring electron acceptors (IPT-2F,IPTT-2F, andIPTTT-2F) have been successfully developed as efficient asymmetric nonfullerene acceptors (NFAs) for organic solar cells (OSCs).