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Photoluminescent behavior of BaWO4 powders processed in microwave-hydrothermal

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dc.contributor.authorCavalcante, L. S.
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorEspinosa, J. W. M.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorPizani, P. S.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:32:14Z
dc.date.available2014-05-20T15:32:14Z
dc.date.issued2009-04-17
dc.description.abstractPhotoluminescence (PL) at room temperature was observed in BaWO4 powders processed in microwave-hydrothermal at 140 degrees C for different times. The phases were characterized by X-ray diffraction (XRD) and Fourier transform Raman (FT-Raman) measurements. XRD and FT-Raman analyses revealed that the BaWO4 powders present a tetragonal structure and free of deleterious phases. Ultraviolet-visible absorption spectroscopy was employed to determine the optical band gap of this material. PL measurements at room temperature showed a maximum emission at around 543 nm (green emission) when excited with 488 nm wavelength. PL behavior was attributed to the existence of distortions on the [WO4] tetrahedron groups caused by microwave radiation. (C) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), LIEC, Dept Quim & Fis, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFAPESR
dc.format.extent195-200
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2008.06.049
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 474, n. 1-2, p. 195-200, 2009.
dc.identifier.doi10.1016/j.jallcom.2008.06.049
dc.identifier.issn0925-8388
dc.identifier.urihttp://hdl.handle.net/11449/41190
dc.identifier.wosWOS:000266952000042
dc.language.isoeng
dc.publisherElsevier B.V. Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofjcr3.779
dc.relation.ispartofsjr1,020
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectOptical materialsen
dc.subjectPrecipitationen
dc.subjectCrystal structureen
dc.subjectOptical propertiesen
dc.subjectLuminescenceen
dc.titlePhotoluminescent behavior of BaWO4 powders processed in microwave-hydrothermalen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
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