Synthesis and competitive luminescence quenching mechanism of Ca3Al2O6:Ln3+ (Ln: Dy and Sm) phosphors

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dc.contributor.authorBakr M.
dc.contributor.authorKaynar Ü.H.
dc.contributor.authorAyvacikli M.
dc.contributor.authorBenourdja S.
dc.contributor.authorKarabulut Y.
dc.contributor.authorHammoudeh A.
dc.contributor.authorCan N.
dc.date.accessioned2024-07-22T08:06:49Z
dc.date.available2024-07-22T08:06:49Z
dc.date.issued2020
dc.description.abstractSm3+ and Dy3+ activated Ca3Al2O6 phosphors were produced through a gel combustion method using Urea + β-Alanine, Urea, and Urea + Glycine as fuels. The crystal structure and the phase purity of the obtained materials were characterized by X-ray powder diffraction (XRD). Ca3Al2O6:Sm3+ phosphor shows characteristic emission lines (565 nm, 602 nm, 649 nm, and 714 nm) in the orange red region assigned to 4G5/2→6HJ (J = 5/2, 7/2, 9/2, 11/2) transitions of Sm3+. The strongest peak is located at 602 nm. Emission spectra of Ca3Al2O6:Dy3+ show that there are two dominant peaks centered at 480 nm and 573 nm emitting blue and yellow light. Optimum doping concentrations of Sm(NO3)3 and Dy(NO3)3 are 0.01 % and 0.03 %, respectively. The concentration quenching mechanism is verified to be a dipole-dipole interaction as the type of energy transfer among Sm3+-Sm3+ and Dy3+-Dy3+ ions. The critical distance is also calculated to be 24.19 Å and 16.77 Å, respectively. © 2020 Elsevier Ltd
dc.identifier.DOI-ID10.1016/j.materresbull.2020.111010
dc.identifier.issn00255408
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13713
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectAluminum compounds
dc.subjectAmino acids
dc.subjectCalcium compounds
dc.subjectCrystal structure
dc.subjectDysprosium
dc.subjectDysprosium compounds
dc.subjectEmission spectroscopy
dc.subjectEnergy transfer
dc.subjectLight emission
dc.subjectMetabolism
dc.subjectPhosphors
dc.subjectQuenching
dc.subjectUrea
dc.subjectX ray powder diffraction
dc.subjectCharacteristic emission
dc.subjectConcentration quenching
dc.subjectDipole dipole interactions
dc.subjectEmission spectrums
dc.subjectGel-combustion method
dc.subjectLuminescence quenching
dc.subjectOptimum doping
dc.subjectYellow light
dc.subjectSamarium compounds
dc.titleSynthesis and competitive luminescence quenching mechanism of Ca3Al2O6:Ln3+ (Ln: Dy and Sm) phosphors
dc.typeArticle

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