High pressure photoluminescence of bismuth-doped yttria-alumina-silica glass

Hughes, MA ORCID: https://orcid.org/0000-0002-0877-5279, McMaster, R, Proctor, JE ORCID: https://orcid.org/0000-0003-3639-8295, Hewak, DC, Suzuki, T and Oshidi, Y 2022, 'High pressure photoluminescence of bismuth-doped yttria-alumina-silica glass' , High Pressure Research .

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We report the effects of high pressure, up to 10.45 GPa, on the photoluminescence of Bi-doped yttria-alumina-silica (Bi:YAlSi) glass under 532 nm excitation. We identify three emission bands attributed to Bi3+, Bi+ and the controversial NIR emitting Bi centre, BiNIR. As the pressure is increased up to ~6 GPa, an irreversible discontinuity in the trend for emission band energies indicates that an irreversible structural modification occurs. This irreversible discontinuity results in the peak energy of emission bands attributed to Bi+ and BiNIR shifting from those typical of Bi-doped oxide glasses to those observed in Bi-doped gallium-lanthanum-sulfide (Bi:GaLaS) glass. The Bi3+ emission band can be almost eliminated at ~6 GPa, but its intensity increases rapidly as the pressure in further increased. The ability we report here to irreversibly modify the emission of Bi-doped glass using pressure treatment adds an extra degree of freedom in the processing parameters available to researchers looking to optimize the emission from Bi-doped glasses.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title: High Pressure Research
Publisher: Taylor & Francis
ISSN: 0895-7959
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Funders: Engineering and Physical Sciences Research Council (EPSRC)
Depositing User: Dr Mark Hughes
Date Deposited: 23 Feb 2022 13:50
Last Modified: 01 Mar 2022 15:00
URI: https://usir.salford.ac.uk/id/eprint/63242

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