文摘
Nonfullerene acceptor FDICTF (2,9-bis(2methylene-(3-(1,1-dicyanomethylene)indanone))-7,12-dihydro-4,4,7,7,12,12-hexaoctyl-4H-cyclopenta[2″,1″:5,6;3″,4″:5′,6′]diindeno[1,2-b:1′,2′-b′]dithiophene) modified by fusing the fluorene core in a precursor, yields 10.06% high power conversion efficiency, and demonstrates that the ladder and fused core backbone in A–D–A structure molecules is an effective design strategy for high-performance nonfullerene acceptors.