RT Journal Article T1 Photochromic mechanism in oxygen-containing yttrium hydride thin films: An optical perspective A1 Montero, J. A1 Martinsen, F. A. A1 García Tecedor, M. A1 Karazhanov, S Zh. A1 Maestre Varea, David A1 Hauback, B. A1 Marstein, E. S. AB Oxygen-containing yttrium hydride thin films exhibit photochromic behavior: Transparent thin films reversibly switch from a transparent state to a photodarkened state after being illuminated with UV or blue light. From optical spectrophotometry and ellipsometry measurements of the transparent state and photodarkened state, it is concluded that the photochromic effect can be explained by the gradual growth, under illumination, of metallic domains within the initial wide-band-gap semiconducting lattice. This conclusion is supported by Raman measurements. PB American Physical Society SN 2469-9950 YR 2017 FD 2017-05-08 LK https://hdl.handle.net/20.500.14352/18042 UL https://hdl.handle.net/20.500.14352/18042 LA eng NO ©2017 American Physical Society.This work was financially supported by the Norwegian Research Council though the FRINATEK Project No. 240477/F20 and the IDELAB/NANO2021 Project No. 238848. NO Norwegian Research Council DS Docta Complutense RD 5 abr 2025