Comment on “Light-Induced Lattice Expansion Leads to High-Efficiency Perovskite Solar Cells”

Nicholas Rolston, Ross Bennett-Kennett, Laura Schelhas, Joseph Luther, Jeffrey Christians, Joseph Berry, Reinhold Dauskardt

Research output: Contribution to journalArticlepeer-review

31 Scopus Citations


Tsai et al. (Reports, 6 April 2018, p. 67) report a uniform light-induced lattice expansion of metal halide perovskite films under 1-sun illumination and claim to exclude heat-induced lattice expansion. We show that by controlling the temperature of the perovskite film under both dark and illuminated conditions, the mechanism for lattice expansion is in fact fully consistent with heat-induced thermal expansion during illumination.

Original languageAmerican English
Article numbereaay8691
Number of pages5
Issue number6488
StatePublished - 2020

Bibliographical note

Publisher Copyright:
© 2020 American Association for the Advancement of Science. All rights reserved.

NREL Publication Number

  • NREL/JA-5K00-76172


  • light-induced lattice expansion
  • metal halide perovskite films


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