Novel Dy and Sm activated BaSi2O5 phosphors: Insights into the structure, intrinsic and extrinsic luminescence, and influence of doping concentration

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dc.contributor.authorAlajlani Y.
dc.contributor.authorCan N.
dc.date.accessioned2024-07-22T08:06:10Z
dc.date.available2024-07-22T08:06:10Z
dc.date.issued2021
dc.description.abstractPure and a series of BaSi2O5:RE3+ (RE = Dy, Sm) phosphors varying with the substitution of Ba2+ were prepared using a gel-combustion method. X-ray diffraction results confirmed that all samples exhibited an orthorhombic structure. FT-IR spectra showed that the samples consist of BaCO3, SiO2 network and the presence of OH groups. The photoluminescence spectrum of non-doped BaSi2O5 showed a broad-band emission peak at 520 nm. The analysis of photoluminescence emission and comparison of the chromaticity diagrams of BaSi2O5:Dy3+ and BaSi2O5:Sm3+ phosphors were presented, and their implications are also discussed. The optimum quenching concentrations and critical distances of Dy3+ and Sm3+ ions in the BaSi2O5 were 2mol%, 22.57 Å and 1 mol%, 28.44 Å, respectively. The investigation of concentration quenching behaviour, fluorescence decay curves, and decay time indicates that the dominant mechanism type leading to concentration quenching was governed by electric dipole-dipole interactions. The concentration dependence of intensity ratio of yellow-blue emission indicated that the emission of BaSi2O5:Dy3+ phosphors fell in the white light region tuning the blue and yellow components. BaSi2O5:Sm3+ phosphors may allow one to consider as potential orange-red-emitting phosphors. © 2020 Elsevier B.V.
dc.identifier.DOI-ID10.1016/j.jlumin.2020.117718
dc.identifier.issn00222313
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13405
dc.language.isoEnglish
dc.publisherElsevier B.V.
dc.subjectDysprosium
dc.subjectPhosphors
dc.subjectPhotoluminescence
dc.subjectPhotoluminescence spectroscopy
dc.subjectQuenching
dc.subjectSamarium
dc.subjectSilica
dc.subjectSilicon
dc.subjectConcentration dependence
dc.subjectConcentration quenching
dc.subjectElectric dipole-dipole interactions
dc.subjectExtrinsic luminescence
dc.subjectOrthorhombic structures
dc.subjectPhotoluminescence emission
dc.subjectPhotoluminescence spectrum
dc.subjectQuenching concentration
dc.subjectBarium compounds
dc.titleNovel Dy and Sm activated BaSi2O5 phosphors: Insights into the structure, intrinsic and extrinsic luminescence, and influence of doping concentration
dc.typeArticle

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