Preparation and cathodoluminescence characteristics of rare earth activated BaAl2O4 phosphors

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dc.contributor.authorBenourdja S.
dc.contributor.authorKaynar Ü.H.
dc.contributor.authorAyvacikli M.
dc.contributor.authorKarabulut Y.
dc.contributor.authorGuinea J.G.
dc.contributor.authorCanimoglu A.
dc.contributor.authorCan N.
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2018
dc.departmentNiğde ÖHÜ
dc.description.abstractUndoped and Pr, Sm and Tb activated BaAl2O4 phosphors have been synthesized by solid state reaction method and combustion method. The structure and morphological observation of the phosphor samples were monitored by X-ray powder diffraction (XRD) and environmental scanning electron microscope (ESEM) coupled to an energy dispersive X-ray spectrometer (EDS). The all diffraction peaks are well assigned to standard data card (PDF?17–306). Emission properties of the samples were explored using light emission induced by an electron beam (i.e cathodoluminescence, CL) at room temperature (RT). Undoped BaAl2O4 sample exhibits a broad defect emission from 300 to 500 nm from the aluminate defect centres. CL spectra recorded at room temperature display that the as-prepared BaAl2O4:Ln (Ln=Pr, Sm and Tb) phosphors exhibit different luminescence colors coming from different rare earth activator ions. The transition 4G5/2 › 6H7/2 located at 606 and 610 nm for Sm3+ can occur as hypersensitive transition having the selection rule ?J = ± 1. For the Tb3+ doped samples, they exhibit D45 green line emissions. The proposed luminescent mechanisms of all doped rare earth ions are also discussed. © 2018 Elsevier Ltd
dc.description.sponsorshipDeanship of Scientific Research, King Faisal University Jazan University
dc.description.sponsorshipThis study is based on the research supported by the Deanship of Scientific Research (DSR) at Jazan University, KSA and this financial assistance from Jazan University is gratefully acknowledged.
dc.identifier.doi10.1016/j.apradiso.2018.04.023
dc.identifier.endpage39
dc.identifier.issn0969-8043
dc.identifier.pmid29702363
dc.identifier.scopus2-s2.0-85046115091
dc.identifier.scopusqualityQ3
dc.identifier.startpage34
dc.identifier.urihttps://dx.doi.org/10.1016/j.apradiso.2018.04.023
dc.identifier.urihttps://hdl.handle.net/11480/1617
dc.identifier.volume139
dc.identifier.wosWOS:000440121800006
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofApplied Radiation and Isotopes
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBaAl2O4
dc.subjectCathodoluminescence
dc.subjectRare earths
dc.subjectXRD
dc.titlePreparation and cathodoluminescence characteristics of rare earth activated BaAl2O4 phosphors
dc.typeArticle

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