Nature Communications (May 2020)

Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination

  • Xun Xiao,
  • Wenhao Li,
  • Yanjun Fang,
  • Ye Liu,
  • Yuchuan Shao,
  • Shuang Yang,
  • Jingjing Zhao,
  • Xuezeng Dai,
  • Rashid Zia,
  • Jinsong Huang

DOI
https://doi.org/10.1038/s41467-020-16075-1
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 7

Abstract

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Grain boundaries are known to be generally detrimental to the operation of metal halide perovskite solar cells. Here Xiao et al. show with scanning photocurrent microscopy that ferroelastic twin boundaries are benign to the electrical properties in crystalline samples, in contrast to grain boundaries.