Fine-Tuning the 3D Structure of Nonfullerene Electron Acceptors Toward High-Performance Polymer Solar Cells
Haiyan Li, Ye-Jin Hwang, Brett A. E. Courtright, Frank N. Eberle, Selvam Subramaniyan and Samson A. Jenekhe*
Article first published online: 1 JUN 2015
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
By tuning the 3D molecular structure of nonfullerene electron acceptors while keeping HOMO/LUMO energy levels constant, a dramatic variation of power conversion efficiency from 2.6% to 6.4% was achieved.