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Mechanisms behind blue, green, and red photoluminescence emissions in CaWO4 and CaMoO4 powders

dc.contributor.authorCampos, A. B.
dc.contributor.authorSimoes, A. Z.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLongo, V. M.
dc.contributor.authorde Figueiredo, A. T.
dc.contributor.authorDe Vicente, F. S.
dc.contributor.authorHernandes, A. C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:23:20Z
dc.date.available2014-05-20T15:23:20Z
dc.date.issued2007-07-30
dc.description.abstractA combined experimental and theoretical study was conducted to analyze the photoluminescence (PL) properties of ordered and disordered CaWO4 (CW) and CaMoO4 (CM) powders. Two mechanisms were found to be responsible for photoluminescence emission in CW and CM powders. The first one, in the disordered powders, was caused by oxygen complex vacancies [MO3 center dot V-O(x)], [MO3 center dot V-O(center dot)] and [MO3 center dot V-O(center dot center dot)], where M=W or Mo, which leads to additional levels in the band gap. The second mechanism, in ordered powders, was caused by an intrinsic slight distortion of the [WO4] or [MoO4] tetrahedral in the short range. (c) 2007 American Institute of Physics.en
dc.description.affiliationUniv Estadual Paulista, IQ, LIEC, BR-14801970 São Paulo, Brazil
dc.description.affiliationUniv Fed Sao Carlos, DEMA & DQ, LIEC, BR-13565905 São Paulo, Brazil
dc.description.affiliationUniv São Paulo, IFSC, BR-13560970 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, IQ, LIEC, BR-14801970 São Paulo, Brazil
dc.format.extent3
dc.identifierhttp://dx.doi.org/10.1063/1.2766856
dc.identifier.citationApplied Physics Letters. Melville: Amer Inst Physics, v. 91, n. 5, 3 p., 2007.
dc.identifier.doi10.1063/1.2766856
dc.identifier.fileWOS000248595800051.pdf
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/11449/34141
dc.identifier.wosWOS:000248595800051
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofApplied Physics Letters
dc.relation.ispartofjcr3.495
dc.relation.ispartofsjr1,382
dc.rights.accessRightsAcesso abertopt
dc.sourceWeb of Science
dc.titleMechanisms behind blue, green, and red photoluminescence emissions in CaWO4 and CaMoO4 powdersen
dc.typeArtigopt
dcterms.licensehttp://publishing.aip.org/authors/web-posting-guidelines
dcterms.rightsHolderAmer Inst Physics
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.author.lattes3573363486614904[2]
unesp.author.orcid0000-0003-2535-2187[2]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

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