Nature Communications (Aug 2018)

Long-lived polarization memory in the electronic states of lead-halide perovskites from local structural dynamics

  • Jasmine P. H. Rivett,
  • Liang Z. Tan,
  • Michael B. Price,
  • Sean A. Bourelle,
  • Nathaniel J. L. K. Davis,
  • James Xiao,
  • Yatao Zou,
  • Rox Middleton,
  • Baoquan Sun,
  • Andrew M. Rappe,
  • Dan Credgington,
  • Felix Deschler

DOI
https://doi.org/10.1038/s41467-018-06009-3
Journal volume & issue
Vol. 9, no. 1
pp. 1 – 8

Abstract

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Anharmonic ultrafast structural dynamics are expected in lead halide perovskites due to their soft nature. Here Rivett et al. show that these dynamics lead to picosecond-long polarization anisotropy of photo-carriers in several halide perovskites, orders of magnitude slower than in conventional semiconductors.