Photochromism of rare-earth metal-oxy-hydrides

F. Nafezarefi; H. Schreuders; B. Dam; S. Cornelius

doi:10.1063/1.4995081

Photochromism of rare-earth metal-oxy-hydrides

F. Nafezarefi, H. Schreuders, B. Dam, S. Cornelius^*

^*Corresponding author for this work

ChemE/Materials for Energy Conversion and Storage

Research output: Contribution to journal › Article › Scientific › peer-review

52 Citations (Scopus)

152 Downloads (Pure)

Abstract

Recently, thin films of yttrium oxy-hydride (YO_xH_y) were reported to show an unusual color-neutral photochromic effect promising for application in smart windows. Our present work demonstrates that also oxy-hydrides based on Gd, Dy, and Er have photochromic properties and crystal structures similar to YO_xH_y. Compared to YO_xH_y, the optical bandgaps of the lanthanide based oxy-hydrides are smaller while photochromic contrast and kinetics show large variation among different cations. Based on these findings, we propose that cation alloying is a viable pathway to tailor the photochromic properties of oxy-hydride materials. Furthermore, we predict that the oxy-hydrides of the other lanthanides are also potentially photochromic.

Original language	English
Article number	103903
Pages (from-to)	1-5
Number of pages	5
Journal	Applied Physics Letters
Volume	111
Issue number	10
DOIs	https://doi.org/10.1063/1.4995081
Publication status	Published - 4 Sept 2017

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AU - Dam, B.

AU - Cornelius, S.

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Photochromism of rare-earth metal-oxy-hydrides

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