Oxygen mobility in yttrium hydride films studied by isotopic labelling

Moldarev Dmitrii; Aracheloff Camille; Moro Marcos V.; Pitthan Eduardo; Wolff Max; Primetzhofer Daniel

doi:10.1051/epjconf/202226101001

EPJ Web of Conferences (Jan 2022)

Oxygen mobility in yttrium hydride films studied by isotopic labelling

Moldarev Dmitrii,
Aracheloff Camille,
Moro Marcos V.,
Pitthan Eduardo,
Wolff Max,
Primetzhofer Daniel

Affiliations

Moldarev Dmitrii: Department of Physics and Astronomy, Uppsala University
Aracheloff Camille: Department of Physics and Astronomy, Uppsala University
Moro Marcos V.: Department of Physics and Astronomy, Uppsala University
Pitthan Eduardo: Department of Physics and Astronomy, Uppsala University
Wolff Max: Department of Physics and Astronomy, Uppsala University
Primetzhofer Daniel: Department of Physics and Astronomy, Uppsala University

DOI: https://doi.org/10.1051/epjconf/202226101001
Journal volume & issue: Vol. 261
p. 01001

Abstract

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The photochromic properties of oxygen-containing yttrium hydride thin films are directly dependent on the oxygen concentration in the material. We use 16O/18O labelling to study oxidation of YH2 films. Oxygen penetrates the film through grain boundaries and intercolumnar voids oxidising the whole film thickness, without pronounced surface oxidation or self-passivation. Once oxidised, the mobility of oxygen in the films is low and no detectable changes in chemical composition of 18O-labeled YHO films is found under illumination.

Published in EPJ Web of Conferences

ISSN: 2100-014X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Science: Physics
Website: http://www.epj-conferences.org/

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