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Title: Engineering of the band gap and optical properties of thin films of yttrium hydride

Thin films of oxygen-containing yttrium hydride show photochromic effect at room temperature. In this work, we have studied structural and optical properties of the films deposited at different deposition pressures, discovering the possibility of engineering the optical band gap by variation of the oxygen content. In sum, the transparency of the films and the wavelength range of photons triggering the photochromic effect can be controlled by variation of the deposition pressure.
Authors:
; ; ;  [1]
  1. Institute for Energy Technology, P.O. Box 40, NO-2027 Kjeller (Norway)
Publication Date:
OSTI Identifier:
22311135
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL STRUCTURE; DEPOSITION; OPACITY; OPTICAL PROPERTIES; OXYGEN; PHOTONS; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; WAVELENGTHS; YTTRIUM HYDRIDES