Luminescence characteristics and kinetic parameters of LiBaPO4: Tb3+, Dy3+ phosphors synthesized by sol-gel method

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dc.contributor.authorKatı, Mehmet İsmail
dc.contributor.authorGokce, Sibel
dc.contributor.authorKeski?n, İlker Çetin
dc.contributor.authorTüremiş, Murat
dc.contributor.authorÇetin, Ahmet
dc.contributor.authorKibar, Rana
dc.date.accessioned2026-02-08T15:11:10Z
dc.date.available2026-02-08T15:11:10Z
dc.date.issued2024
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractLiBaPO<inf>4</inf>: Tb3+, Dy3+ phosphors were prepared via sol-gel method by using the stoichiometric amounts of lithium nitrate LiNO<inf>3,</inf> barium nitrate Ba(NO<inf>3</inf>)<inf>2</inf> and ammonium dihydrogen phosphate NH<inf>4</inf>H<inf>2</inf>PO<inf>4</inf> as base materials. Morphology by scanning electron microscopy (SEM), structure by X-ray diffraction (XRD), thermal properties by Differential thermal analysis (DTA)/Thermogravimetric Analysis (TGA) and structural characteristics by Fourier transform infrared spectroscopy (FT-IR) were investigated. This paper presents luminescence properties using spectra from radioluminescence (RL), photoluminescence (PL), cathodoluminescence (CL) and, thermoluminescence (TL) and the influence of RE dopants (Tb3+, Dy3+) on the luminescent behavior of LiBaPO<inf>4</inf>. Computerized Glow Curve Deconvolution (CGCD) and Peak Shape Method were used to determine the kinetic parameters and the obtained results were evaluated. The RL results of un-doped LiBaPO<inf>4</inf> showed the presence of a well-defined peak at 417 nm and a weaker band around 685 nm. Strong emissions were detected in the sample doped with Dy3+ correspond to 4F<inf>9/2</inf>?6H<inf>j</inf> transitions. Blue, yellow and red emissions were observed with transitions of 4F<inf>9/2</inf> ? 6H<inf>15/2</inf>, 4F<inf>9/2</inf> ? 6H<inf>13/2</inf> and 4F<inf>9/2</inf> ? 6H<inf>11/2</inf>, respectively. As for LiBaPO<inf>4</inf>: Tb3+, green emissions originated from the characteristic transitions (5D<inf>3</inf> ? 7F<inf>J</inf> (j = 6–3) and 5D<inf>4</inf> ? 7F<inf>J</inf> (j = 6–1)) of Tb+3 ion was seen. The RL, PL and CL spectra were identical, suggesting these green emissions. Dy3+ doped sample has three glow curves located at 72 °C, 145 °C and 204 °C, while the main temperature peak is measured at 240 °C for Tb3+ doped sample. Chromotographic studies of LiBa<inf>0·98</inf>PO<inf>4</inf>: Dy3+<inf>0.02</inf> reveals that calculated x and y color coordinates (0.3122, 0.3233) are very close to the white light. © 2023
dc.description.sponsorship(FEF 2017-147)
dc.identifier.doi10.1016/j.jlumin.2023.120312
dc.identifier.issn0022-2313
dc.identifier.scopus2-s2.0-85178000551
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jlumin.2023.120312
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5273
dc.identifier.volume266
dc.identifier.wosWOS:001129653500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakScopus
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Luminescence
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzScopus_KA_20260207
dc.subjectCathodoluminescence
dc.subjectKinetic parameters
dc.subjectLiBaPO4
dc.subjectPhotoluminescence
dc.subjectRadioluminescence
dc.subjectRare earth
dc.subjectSol-gel
dc.subjectThermoluminescence
dc.titleLuminescence characteristics and kinetic parameters of LiBaPO4: Tb3+, Dy3+ phosphors synthesized by sol-gel method
dc.typeArticle

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