Photoluminescence of single-phased white light emission materials based on simultaneous Tb3+, Eu3+ and Dy3+ doping in CaWO4 matrix

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dc.contributor.authorBARBOSA, HELLIOMAR P.
dc.contributor.authorSILVA, IVAN G.N.
dc.contributor.authorFELINTO, MARIA C.F.C.
dc.contributor.authorTEOTONIO, ERCULES E.S.
dc.contributor.authorMALTA, OSCAR L.
dc.contributor.authorBRITO, HERMI F.
dc.coverageInternacionalpt_BR
dc.date.accessioned2018-02-20T13:48:05Z
dc.date.available2018-02-20T13:48:05Z
dc.date.issued2017pt_BR
dc.description.abstractThe triply-doped xTb3þ/xEu3þ/xDy3þ CaWO4 (x: 0.5, 1.0, 2.0, 3.0, 4.0 and 5.0 mol%) nanomaterials were prepared at room temperature by a coprecipitation method. The luminescence materials were characterized by X-ray powder diffraction (XPD), thermal analysis (TG), infrared absorption spectroscopy (FTIR) and UV excited photoluminescence. The prepared powder phosphors are single-phase scheelite structure with porous morphology and particle sizes around 11 nm. The materials display white color from cool to the warm white, under UV excitation, as a result of the intraconfigurational 4f transitions from trivalent rare earth ions. The non-radiative energy transfer processes from the O/Wand O/Eu LMCT as well as the 4f8/4f75d1 states to the intraconfigurational 4f excited levels of rare earth ions and simultaneous emissions from the 4F9/2 (Dy3þ)/5D4 (Tb3þ)/5D1,5D0 (Eu3þ) emitter levels are reported. Furthermore, CIE parameters and the color correlated temperature (CCT) are discussed in order to characterize the color emission. Based on the results, these luminescence materials may be potential candidates for white light emitting diodes and solid-state lighting.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipIDFAPESP: 15/15045-5pt_BR
dc.description.sponsorshipIDCAPES: 04/2008pt_BR
dc.description.sponsorshipIDCNPq: 407820/2013-2pt_BR
dc.format.extent820-827pt_BR
dc.identifier.citationBARBOSA, HELLIOMAR P.; SILVA, IVAN G.N.; FELINTO, MARIA C.F.C.; TEOTONIO, ERCULES E.S.; MALTA, OSCAR L.; BRITO, HERMI F. Photoluminescence of single-phased white light emission materials based on simultaneous Tb3+, Eu3+ and Dy3+ doping in CaWO4 matrix. <b>Journal of Alloys and Compounds</b>, v. 696, p. 820-827, 2017. DOI: <a href="https://dx.doi.org/10.1016/j.jallcom.2016.11.378">10.1016/j.jallcom.2016.11.378</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/28511.
dc.identifier.doi10.1016/j.jallcom.2016.11.378pt_BR
dc.identifier.issn0925-8388pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7028-0878
dc.identifier.percentilfi80.25en
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/28511
dc.identifier.vol696pt_BR
dc.relation.ispartofJournal of Alloys and Compoundspt_BR
dc.rightsopenAccesspt_BR
dc.subjectrare earths
dc.subjectalkaline earth metals
dc.subjectlight sources
dc.subjectemission
dc.subjectphoton emission
dc.subjectcharged particles
dc.subjectemission spectra
dc.subjectdoped materials
dc.subjectphotoluminescence
dc.titlePhotoluminescence of single-phased white light emission materials based on simultaneous Tb3+, Eu3+ and Dy3+ doping in CaWO4 matrixpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorMARIA CLAUDIA FRANCA DA CUNHA FELINTO
ipen.codigoautor1103
ipen.contributor.ipenauthorMARIA CLAUDIA FRANCA DA CUNHA FELINTO
ipen.date.recebimento18-02pt_BR
ipen.identifier.fi3.779pt_BR
ipen.identifier.ipendoc24334pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi3.000 - 4.499
ipen.range.percentilfi75.00 - 100.00
ipen.type.genreArtigo
relation.isAuthorOfPublication1333caab-4e1b-4dd8-83b4-3f2013c0ce22
relation.isAuthorOfPublication.latestForDiscovery1333caab-4e1b-4dd8-83b4-3f2013c0ce22
sigepi.autor.atividadeFELINTO, MARIA C.F.C.:1103:750:Npt_BR
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