Photochromism of rare-earth metal-oxy-hydrides

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

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)
88 Downloads (Pure)

Abstract

Recently, thin films of yttrium oxy-hydride (YOxHy) 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 YOxHy. Compared to YOxHy, 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 languageEnglish
Article number103903
Pages (from-to)1-5
Number of pages5
JournalApplied Physics Letters
Volume111
Issue number10
DOIs
Publication statusPublished - 4 Sep 2017

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