Comment on "Light-induced lattice expansion leads to high-efficiency perovskite solar cells"

Tsai (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 condi...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2020-04, Vol.368 (6488)
Main Authors: Rolston, Nicholas, Bennett-Kennett, Ross, Schelhas, Laura T, Luther, Joseph M, Christians, Jeffrey A, Berry, Joseph J, Dauskardt, Reinhold H
Format: Article
Language:English
Subjects:
light-induced lattice expansion
metal halide perovskite films
SOLAR ENERGY
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Summary:Tsai (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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aay8691