Synthesis and in-situ characterization of photochromic yttrium oxyhydride grown by reactive e−-beam evaporation. (September 2020)

• Record Type: Journal Article
• Authors: Kantre, K.; Moro, M.V.; Moldarev, D.; Wolff, M.; Primetzhofer, D.
• Is Part Of: Scripta materialia. Number 186(2020)
• Page Start: 352
• Page End: 356
• Publication Date: 2020-09
• Subjects: Photochromism -- Yttrium oxyhydrides -- Electron-beam evaporation -- In-situ ion beam analysis; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.05.009
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: We report on controlled growth of photochromic yttrium oxyhydride thin films monitored by in-situ composition depth profiling. Films were grown by reactive e − -beam evaporation and subsequently oxidized, while simultaneously tracking the oxygen and hydrogen concentrations. Sample composition and photochromic response were characterized in-situ using non-destructive ion beam analysis and image analysis, respectively – as well as complementary ex-situ ion beam methods, X-ray diffraction and optical spectrophotometry. We show that photochromic yttrium oxyhydride can be grown as yttrium dihydride, which is then oxidized to O/H ratios triggering the photochromic response. Graphical Abstract: Image, graphical abstract