Kinetic parameters and luminescence properties of rare earth (Tb, Nd) doped and transition metal (Mn) doped/co-doped YAlO3 prepared via sol-gel method

Simple item page
dc.contributor.authorGökçe S.
dc.contributor.authorKeskin İ.Ç.
dc.contributor.authorKatı M.İ.
dc.contributor.authorKibar R.
dc.contributor.authorÇetin A.
dc.contributor.authorTuncer Arslanlar Y.
dc.date.accessioned2024-07-22T08:02:33Z
dc.date.available2024-07-22T08:02:33Z
dc.date.issued2023
dc.description.abstractIn this work, phosphor materials with the formula YAlO3 were synthesized via sol-gel method by using the stoichiometric amounts of yttrium nitrate and aluminum nitrate as base materials. The obtained phosphors were doped/co-doped with Tb3+, Nd3+ rare earth ions and Mn2+ transition metal ion. For evaluating the influence of the dopants, the grain size and morphology of the samples by scanning electron microscopy (SEM) and the phase and crystallinity of the synthesized materials by X-ray diffraction (XRD) were investigated. Optical absorption spectra, photoluminescence (PL) and thermoluminescence (TL) were performed to determine a relationship the changing dopant on luminescence properties of YAlO3. Moreover, the kinetic parameters namely activation energy (E), order of kinetics (b) and frequency factor (s) of the synthesized pure and doped materials were calculated using Computerized Glow Curve Deconvolution (CGCD) and Peak Shape Method for a better understanding of the optical properties that change with the doping process. Strong green emission was detected in the sample doped with Mn2+ correspond to 4T1(G)→6A1(S) transition. As for YAlO3: Nd3+, characteristic emissions originated from 4G11/2 → 4I9/2 (∼423 nm), 4G9/2 → 4I9/2 (∼460 nm) and 4G7/2 → 4I9/2 (∼540 nm) transitions were seen. The optical band gap of undoped sample was calculated as 2.79 eV and depending on the presence of Nd3+ and Tb3+ dopant ions this value was decreased to the range 2.46–2.56 eV. © 2023 Elsevier B.V.
dc.identifier.DOI-ID10.1016/j.jlumin.2023.119883
dc.identifier.issn00222313
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/11894
dc.language.isoEnglish
dc.publisherElsevier B.V.
dc.subjectActivation energy
dc.subjectAluminum compounds
dc.subjectCrystallinity
dc.subjectEnergy gap
dc.subjectKinetic parameters
dc.subjectLight absorption
dc.subjectManganese compounds
dc.subjectMetal ions
dc.subjectNeodymium compounds
dc.subjectNitrates
dc.subjectOptical properties
dc.subjectPhotoluminescence
dc.subjectRare earths
dc.subjectScanning electron microscopy
dc.subjectSol-gel process
dc.subjectThermoluminescence
dc.subjectTransition metals
dc.subjectYttrium compounds
dc.subjectCo-doped
dc.subjectKinetics parameter
dc.subjectLuminescence properties
dc.subjectMn-doped
dc.subjectNd-doped
dc.subjectPhosphor materials
dc.subjectRare-earths
dc.subjectSol'gel
dc.subjectSol- gel methods
dc.subjectSynthesised
dc.subjectSol-gels
dc.titleKinetic parameters and luminescence properties of rare earth (Tb, Nd) doped and transition metal (Mn) doped/co-doped YAlO3 prepared via sol-gel method
dc.typeArticle

Files

Collections

Scopus Koleksiyonu