Structural and temperature dependence luminescence characteristics of RE (RE=Eu3+, Dy3+, Sm3+ and Tb3+) in the new gadolinium aluminate borate phosphor

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dc.contributor.authorMadkhali O.
dc.contributor.authorKaynar Ü.H.
dc.contributor.authorAlajlani Y.
dc.contributor.authorCoban M.B.
dc.contributor.authorGuinea J.G.
dc.contributor.authorAyvacikli M.
dc.contributor.authorPierson J.F.
dc.contributor.authorCan N.
dc.date.accessioned2024-07-22T08:02:33Z
dc.date.available2024-07-22T08:02:33Z
dc.date.issued2023
dc.description.abstractGdAl3(BO3)4:Dy3+, Sm3+, Eu3+, and Tb3+ samples were successfully achieved via a sol-gel combustion method. The observed XRD analysis confirms the formation of the desired GAB host, indicating rhombohedral structures that agree well with JPCD card number 72–1985. The FTIR analyses show the detection of B − O stretching and B − O − B bending modes as well as Al − O and Gd − O bonds in the phosphor samples. Energy dispersive spectroscopy (EDS) analysis reveals that Sm, Eu, Dy, and Tb have been successfully doped into GdAl3(BO3)4. The observed broad intrinsic luminescence band can be caused by oxygen-induced luminescence defects in the GAB host with hydrous precursors. The luminescence properties of rare earth ion-doped GdAl3(BO3)4 samples are analysed by photoluminescence spectra, showing their optimal doping concentrations and critical distances of Dy3+, Eu3+, Sm3+ and Tb3+ are 2 wt% − 25.8 Å, 7 wt% − 17 Å, 1 wt% − 32.59 Å, and 7 wt% − 17.03 Å. Additionally, the energy transfer mechanism for luminescence quenching was determined as dipole-dipole (for Dy3+, Eu3+, and Tb3+) or dipole-quadrupole (for Sm3+) and the cross-relaxation process. GdAl3(BO3)4 samples obtained by doping with different RE3+ ions exhibit intense light emissions with different colors originating from different RE3+ ions under 349 nm excitation. When doped with different concentrations of RE3+ ions, the luminescence properties of the samples changed. The synthesized luminescence materials have potential applications in lighting and display technologies. © 2023 Elsevier Ltd and Techna Group S.r.l.
dc.identifier.DOI-ID10.1016/j.ceramint.2023.03.120
dc.identifier.issn02728842
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/11897
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectCombustion
dc.subjectDefects
dc.subjectDysprosium compounds
dc.subjectEnergy transfer
dc.subjectFourier transform infrared spectroscopy
dc.subjectGadolinium compounds
dc.subjectLuminescence of inorganic solids
dc.subjectMetal ions
dc.subjectPhosphors
dc.subjectPhotoluminescence
dc.subjectQuenching
dc.subjectSamarium compounds
dc.subjectSodium Aluminate
dc.subjectSol-gel process
dc.subjectSol-gels
dc.subjectTemperature distribution
dc.subjectConcentration quenching
dc.subjectCross relaxation mechanism
dc.subjectCrossrelaxation
dc.subjectHighest temperature
dc.subjectLow-high
dc.subjectLow-high temperature photoluminescence
dc.subjectLuminescence defect
dc.subjectRare-earths
dc.subjectRelaxation mechanism
dc.subjectSol-gel combustion
dc.subjectRare earths
dc.titleStructural and temperature dependence luminescence characteristics of RE (RE=Eu3+, Dy3+, Sm3+ and Tb3+) in the new gadolinium aluminate borate phosphor
dc.typeArticle

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