Disorder-dependent photoluminescence in Ba0.8Ca0.2TiO3 at room temperature

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dc.contributor.authorMotta, F. V. [UNESP]
dc.contributor.authorde Figueiredo, A. T. [UNESP]
dc.contributor.authorLongo, V. M. [UNESP]
dc.contributor.authorMastelaro, V. R.
dc.contributor.authorFreitas, A. Z.
dc.contributor.authorGomes, L.
dc.contributor.authorVieira, N. D.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionInstituto de Pesquisas Energéticas e Nucleares (IPEN)
dc.date.accessioned2014-05-20T15:31:12Z
dc.date.available2014-05-20T15:31:12Z
dc.date.issued2009-07-01
dc.description.abstractThe photoluminescence (PL) emission in structurally disordered Ba0.8Ca0.2TiO3 (BCT20) powders was observed at room temperature with laser excitation at lines 355 and 460 nm. The structural evolution perovskite-like titanate BCT20 powders prepared by a soft chemical processing at different annealing temperatures were accompanied by X-ray diffraction (XRD) and X-ray absorption near-edge structure (XANES). Intermediate oxycarbonate phase was identified and your influence with PL emission was discarding. BCT20 annealed at 500 degrees C displays intense PL emission. The results indicate relationship between broad PL band and order-disorder degree. (C) 2009 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUSP, Inst Fis São Carlos, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationIPEN CNEN SP, Ctr Lasers & Applicat, BR-05508000 São Paulo, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent686-690
dc.identifierhttp://dx.doi.org/10.1016/j.jlumin.2009.01.014
dc.identifier.citationJournal of Luminescence. Amsterdam: Elsevier B.V., v. 129, n. 7, p. 686-690, 2009.
dc.identifier.doi10.1016/j.jlumin.2009.01.014
dc.identifier.issn0022-2313
dc.identifier.urihttp://hdl.handle.net/11449/40406
dc.identifier.wosWOS:000266129600006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Luminescence
dc.relation.ispartofjcr2.732
dc.relation.ispartofsjr0,694
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTitanatesen
dc.subjectAmorphous semiconductorsen
dc.subjectPhotoluminescenceen
dc.subjectOrder-disorderen
dc.subjectBCTen
dc.titleDisorder-dependent photoluminescence in Ba0.8Ca0.2TiO3 at room temperatureen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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