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The Role of Short-Range Disorder in BaWO4 Crystals in the Intense Green Photoluminescence

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dc.contributor.authorAnicete-Santos, Marcos
dc.contributor.authorPicon, Francini C.
dc.contributor.authorAlves, Claudio N.
dc.contributor.authorPizani, Paulo S.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Federal do Pará (UFPA)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:32:54Z
dc.date.available2014-05-20T15:32:54Z
dc.date.issued2011-06-23
dc.description.abstractAn intense and broad visible photoluminescence (PL) band was observed at room temperature in short-range disordered BaWO4 crystals. The scheelite crystalline BaWO4 powders prepared by the polymeric precursor method and annealed at different temperatures were structurally characterized by means of X-ray diffraction and Fourier transform (FT) Raman spectroscopy measurements. Quantum-mechanical calculations indicated that the disorder at short range only of Ba atoms in the BaWO4 lattice has a very important role in the charge transfer involved in the intense green PL emission. This indication was detected and confirmed by means of FT Raman spectroscopy measurements. The experimental and theoretical results are in good agreement, both showing the specific type of structural disorder that is the most favorable condition for generating the most intense green PL emission in the scheelite BaWO4 lattice.en
dc.description.affiliationUFPA, LPDF, BR-66075110 Belem, Para, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUNESP, Inst Quim, LIEC, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, LIEC, BR-14801907 Araraquara, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipPROPESP/UFPA
dc.description.sponsorshipFundação de Amparo e Desenvolvimento da Pesquisa - Belém, PA (FADESP)
dc.description.sponsorshipFundação Amazônia Paraense de Amparo à Pesquisa (FAPESPA)
dc.format.extent12180-12186
dc.identifierhttp://dx.doi.org/10.1021/jp2009622
dc.identifier.citationJournal of Physical Chemistry C. Washington: Amer Chemical Soc, v. 115, n. 24, p. 12180-12186, 2011.
dc.identifier.doi10.1021/jp2009622
dc.identifier.issn1932-7447
dc.identifier.urihttp://hdl.handle.net/11449/41683
dc.identifier.wosWOS:000291709600038
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofJournal of Physical Chemistry C
dc.relation.ispartofjcr4.484
dc.relation.ispartofsjr2,135
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleThe Role of Short-Range Disorder in BaWO4 Crystals in the Intense Green Photoluminescenceen
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/page/copyright/journals/faqs.html
dcterms.rightsHolderAmer Chemical Soc
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química