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A New Nonfullerene Electron Acceptor with a Ladder Type Backbone for High-Performance Organic Solar Cells
Nailiang Qiu1,2, Huijing Zhang1,2, Xiangjian Wan1,2
1The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.
Abstract:
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.
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