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Synthesis and photoluminescence behavior of Bi4Ti3O12 powders obtained by the complex polymerization method

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dc.contributor.authorOliveira, R. C.
dc.contributor.authorCavalcante, L. S.
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorAguiar, E. C. [UNESP]
dc.contributor.authorEspinosa, J. W. M. [UNESP]
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.accessioned2014-05-20T15:32:13Z
dc.date.available2014-05-20T15:32:13Z
dc.date.issued2009-06-10
dc.description.abstractBismuth titanate, Bi4Ti3O12(BiT) powders were synthesized by the complex polymerization method. The structural evolution as a function of heat treatment temperature of these powders was analyzed by X-ray diffraction (XRD) and micro-Raman (MR) spectroscopy. The optical properties were verified by ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements. XRD patterns and MR spectra revealed that the BiT powders heat treated at 700 degrees C for 2 h under oxygen flow crystallize in an orthorhombic structure without deleterious phases. UV-vis spectra indicated the presence of intermediary energy levels within the band gap of the powders heat treated at low temperatures. The maximum PL emissions of these materials were verified at around 598 nm, when excited by 488 nm wavelengths. Also, it was observed the presence of two broad PL bands, which were attributed to the intermediary energy levels arising from alpha-Bi2O3 and BiT phases. (C) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Quim & Fis, LIEC, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Quim, LIEC IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Quim, LIEC 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.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent661-670
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2008.11.115
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 478, n. 1-2, p. 661-670, 2009.
dc.identifier.doi10.1016/j.jallcom.2008.11.115
dc.identifier.issn0925-8388
dc.identifier.urihttp://hdl.handle.net/11449/41183
dc.identifier.wosWOS:000266786400133
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 restrito
dc.sourceWeb of Science
dc.subjectClustersen
dc.subjectChemical synthesisen
dc.subjectOptical propertiesen
dc.subjectLuminescenceen
dc.titleSynthesis and photoluminescence behavior of Bi4Ti3O12 powders obtained by the complex polymerization methoden
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
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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