High temperature photoluminescence dependence and energy migration of Tb3+-Incorporated K3Y(BO2)6 phosphors

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dc.contributor.authorSouadi, G
dc.contributor.authorHakami, O
dc.contributor.authorKaynar, UH
dc.contributor.authorCoban, MB
dc.contributor.authorAydin, H
dc.contributor.authorMadkhali, O
dc.contributor.authorZelai, T
dc.contributor.authorAyvacikli, M
dc.contributor.authorCan, N
dc.date.accessioned2025-04-10T10:36:33Z
dc.date.available2025-04-10T10:36:33Z
dc.description.abstractThis study investigates the structural and photoluminescence (PL) characteristics of Tb3+-incorporated K3Y(BO2)(6) (KYBO) phosphors synthesized via a microwave-assisted sol-gel technique. X-ray diffraction (XRD) and Rietveld refinement confirmed the formation of a pure hexagonal phase, with lattice expansion due to Tb3+ doping. PL studies revealed strong green emissions centered at 541 nm, attributed to the D-5(4) -> F-7(5) transitions of Tb3+ ions, with the highest intensity observed at 5 wt% Tb3+. A decrease in emission was observed at higher concentrations due to concentration quenching. Temperature-dependent PL measurements revealed reverse thermal quenching enhancing PL intensity. Chromaticity analysis based on CIE 1931 coordinates showed stable green emission across all concentrations, with a maximum color purity of 89.74% observed for the KYBO:3 wt% Tb3+ sample. The results, along with reverse thermal quenching behavior observed between 470K and 550K, suggest that these phosphors exhibit excellent potential for lighting and display technologies.
dc.identifier.e-issn1872-9800
dc.identifier.issn0969-8043
dc.identifier.urihttp://hdl.handle.net/20.500.14701/42406
dc.language.isoEnglish
dc.titleHigh temperature photoluminescence dependence and energy migration of Tb3+-Incorporated K3Y(BO2)6 phosphors
dc.typeArticle

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