Aqueous degradation and atomic layer deposition (ALD) stabilization of BaAl2O4: Eu2+, Dy3+long afterglow phosphors

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dc.authoridErkul Karacaoğlu: 0000-0003-3883-7343en_US
dc.authoridMesut Uyaner: 0000-0003-2743-2340en_US
dc.authoridAli Kemal Okyay: 0000-0002-4956-5307en_US
dc.authoridMard D. Losego: 0000-0002-9810-9834en_US
dc.contributor.authorKaracaoğlu, Erkul
dc.contributor.authorUyaner, Mesut
dc.contributor.authorOkyay, Ali Kemal
dc.contributor.authorLosego, Mark D.
dc.date.accessioned2023-04-07T12:13:00Z
dc.date.available2023-04-07T12:13:00Z
dc.date.issued2023en_US
dc.departmentNEÜ, Havacılık ve Uzay Bilimleri Fakültesi, Uçak Mühendisliği Bölümüen_US
dc.descriptionMakaleen_US
dc.descriptionWOS:000931990700001en_US
dc.description.abstractThis paper presents the aqueous degradation mechanisms of BaAl2O4:Eu2+, Dy3+ phosphors and demonstrates an ability to prevent degradation via Al2O3 nano encapsulation of powders by atomic layer deposition (ALD) technique. Phosphor powder is synthesized from the solid-state reaction method. The aqueous degradation of this phosphor is systematically studied. This phosphor is found to hydrolyze and degrade within just 30 min of exposure in water. The degradation of BaAl2O4 host lattice directly affects the blue-green light emission at 497 nm, producing blue-and red-emissions that are peaked at 429 nm and 687 nm, respectively. Hydrated and structural decomposed BaAl2O4 reveals a continuous change in the phase assemblage over 30 days of immersion. To prevent this rapid degradation, use of a protective nanocoating was investigated. 10 nm Al2O3 coatings were applied to the surface of the phosphor powder via ALD. ALD coated BaAl2O4:Eu2+,Dy3+ phosphor retains its phosphorescence for at least 7 days of water exposure. Successful encapsulation of such phosphor particles will make them possible to use in aqueous applications or store in long-term humid environments.en_US
dc.description.sponsorshipTUBITAK, International Doctoral Research Fellowship Programmeen_US
dc.identifier.citationKaracaoğlu, E., Uyaner, M., Okyay, A. K., Losego, M.D. (2023). Aqueous degradation and atomic layer deposition (ALD) stabilization of BaAl2O4: Eu2+, Dy3+long afterglow phosphors. Materials Chemistry and Physics, 298, 1-10.en_US
dc.identifier.doi10.1016/j.matchemphys.2023.127433en_US
dc.identifier.endpage10en_US
dc.identifier.issn0254-0584en_US
dc.identifier.issn1879-3312en_US
dc.identifier.issue-en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.matchemphys.2023.127433
dc.identifier.urihttps://hdl.handle.net/20.500.12452/9397
dc.identifier.volume298en_US
dc.identifier.wosWOS:000931990700001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofMaterials Chemistry and Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/embargoedAccessen_US
dc.subjectBaAl2O4:Eu2+en_US
dc.subjectDy3+en_US
dc.subjectPhosphorescenceen_US
dc.subjectAtomic Layer Deposition (ALD)en_US
dc.subjectAl2O3 Coatingen_US
dc.subjectWater Immersionen_US
dc.titleAqueous degradation and atomic layer deposition (ALD) stabilization of BaAl2O4: Eu2+, Dy3+long afterglow phosphorsen_US
dc.typeArticleen_US

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