Nature Communications (Aug 2020)

Delocalization of exciton and electron wavefunction in non-fullerene acceptor molecules enables efficient organic solar cells

  • Guichuan Zhang,
  • Xian-Kai Chen,
  • Jingyang Xiao,
  • Philip C. Y. Chow,
  • Minrun Ren,
  • Grit Kupgan,
  • Xuechen Jiao,
  • Christopher C. S. Chan,
  • Xiaoyan Du,
  • Ruoxi Xia,
  • Ziming Chen,
  • Jun Yuan,
  • Yunqiang Zhang,
  • Shoufeng Zhang,
  • Yidan Liu,
  • Yingping Zou,
  • He Yan,
  • Kam Sing Wong,
  • Veaceslav Coropceanu,
  • Ning Li,
  • Christoph J. Brabec,
  • Jean-Luc Bredas,
  • Hin-Lap Yip,
  • Yong Cao

DOI
https://doi.org/10.1038/s41467-020-17867-1
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 10

Abstract

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Y6, as a non-fullerene acceptor for organic solar cells, has attracted intensive attention because of the low voltage loss and high charge generation efficiency. Here, Zhang et al. find that the delocalization of exciton and electron wavefunction due to strong π-π packing of Y6 is the key for the high performance.