Comprehensive study on structural, thermal, morphological and luminescence (RL, PL, TL) properties of CaLa2(WO4)4: Tb3+, Dy3+ phosphors synthesized via sol-gel method

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dc.contributor.authorTüremiş M.
dc.contributor.authorKeskin İ.Ç.
dc.contributor.authorKatı M.İ.
dc.contributor.authorÇetin A.
dc.contributor.authorAy K.
dc.contributor.authorKibar R.
dc.date.accessioned2024-07-22T08:05:48Z
dc.date.available2024-07-22T08:05:48Z
dc.date.issued2021
dc.description.abstractTb3+/Dy3+ co-doped CaLa2(WO4)4 (CLW: Tb3+/Dy3+) and its derivatives were synthesized by the sol-gel method. The morphology, thermal, structure and luminescent-optical properties the as-prepared light-emitting phosphors were characterized by utilizing scanning electron microscopy (SEM), differential thermal analysis (DTA)-thermogravimetric analysis (TG), X-ray diffraction (XRD) and radioluminescence (RL or X-ray luminescence) - photoluminescence (PL) –thermoluminescence (TL or TSL) - optical absorption spectrometry. The Tb3+ and Dy3+ ions were singly or doubly doped and the results were examined in detail. Moreover, for these phosphors, the energy transfer mechanisms which depend on RL and PL spectra were determined. The samples excited by X-ray demonstrate characteristic luminescence peaks of Dy3+ (422, 480, 575, 663 and 747 nm) and Tb3+ (489, 544, 586, 620, 652 and 675 nm). These emissions are similar for RL and PL measurements. It could be said that the energy transfer efficiency of the host material is perfect for rare-earth ions. The synthesized phosphors exhibit various colors from yellow to blue under UV excitation. The optical band gaps of host CLW, CLW: Tb3+, CLW: Dy3+ and co-doped CLW: Tb3+/Dy3+ were calculated at values 3.83 eV, 3.44 eV, 3.64 eV and 3.52 eV, respectively. From the results obtained, the CaLa2(WO4)4: Tb3+, Dy3+phosphors may be one of the potential candidates for light-emitting diode. © 2021 Elsevier Ltd and Techna Group S.r.l.
dc.identifier.DOI-ID10.1016/j.ceramint.2021.05.297
dc.identifier.issn02728842
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13266
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectAbsorption spectroscopy
dc.subjectDifferential thermal analysis
dc.subjectEnergy gap
dc.subjectEnergy transfer
dc.subjectLight
dc.subjectLight absorption
dc.subjectMetal ions
dc.subjectOptical properties
dc.subjectPhosphors
dc.subjectPhotoluminescence
dc.subjectRare earths
dc.subjectScanning electron microscopy
dc.subjectSol-gels
dc.subjectThermogravimetric analysis
dc.subjectThermoluminescence
dc.subjectCala2(WO4)4: tb3+/dy3+phosphor
dc.subjectCo-doped
dc.subjectPhotoluminescence
dc.subjectRadio-luminescence
dc.subjectRadioluminescence
dc.subjectSol- gel methods
dc.subjectSynthesised
dc.subjectThermal stimulated luminescence
dc.subjectThermoluminescence
dc.subjectX ray luminescence
dc.subjectSol-gel process
dc.titleComprehensive study on structural, thermal, morphological and luminescence (RL, PL, TL) properties of CaLa2(WO4)4: Tb3+, Dy3+ phosphors synthesized via sol-gel method
dc.typeArticle

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