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Elucidating photoluminescent properties of Eu-doped Ca-Al-Si-O(-N) glasses and the local structures of Eu ions
Natl Inst Mat Sci, Japan.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. Gdańsk Univ Technol, Poland.ORCID iD: 0000-0001-7927-9187
Natl Inst Mat Sci, Japan.
Natl Inst Mat Sci, Japan.
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2024 (English)In: Journal of The American Ceramic Society, ISSN 0002-7820, E-ISSN 1551-2916, Vol. 107, no 5, p. 2930-2939Article in journal (Refereed) Published
Abstract [en]

Europium (Eu) ion-doped luminescent materials have attracted considerable attention for their numerous optical applications. Eu-doped Ca-Al-Si-O(-N) glasses were synthesized from a mixture of oxynitride glasses and Eu2O3 powder using a standard melt-quenching technique in a radiofrequency furnace. The source Eu trivalent ions primarily changed to Eu2+ during melting, and the ratio of Eu2+ ions increased with an increase in Eu content in the starting mixture. All the prepared glasses exhibited photoluminescence (PL) owing to the 5d-4f transition of Eu2+ ions. The absorption edge and PL wavelength shifted to longer wavelength with an increase in Eu content. Moreover, oxynitride glasses exhibited a longer wavelength than those of oxide glasses. The internal quantum efficiency (IQE) increased with the increase in Eu content until it reached a maximum. X-ray absorption structure and electron spin resonance spectroscopies were used to determine the local structure of Eu ions, which confirmed that changes in the local structure of Eu ions were responsible for the shift in PL peak and the change in IQE. The development of the Eu-doped Ca-Al-Si-O-N glasses is highly inspiring for transparent phosphors.

Place, publisher, year, edition, pages
John Wiley & Sons, 2024. Vol. 107, no 5, p. 2930-2939
Keywords [en]
europium, glass, oxynitride, photoluminescence
National Category
Ceramics and Powder Metallurgical Materials
Research subject
Technology (byts ev till Engineering), Glass Technology
Identifiers
URN: urn:nbn:se:lnu:diva-126762DOI: 10.1111/jace.19615ISI: 001128863900001Scopus ID: 2-s2.0-85180250774OAI: oai:DiVA.org:lnu-126762DiVA, id: diva2:1828200
Available from: 2024-01-16 Created: 2024-01-16 Last updated: 2025-02-09Bibliographically approved

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Wójcik, Natalia A.Ali, Sharafat

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Department of Built Environment and Energy TechnologyAdvanced Materials
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