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dc.contributor.authorda Silva, Alison Abreu-
dc.contributor.authorCebim, Marco Aurelio-
dc.contributor.authorDavolos, Marian Rosaly-
dc.date.accessioned2014-05-20T14:20:03Z-
dc.date.accessioned2016-10-25T17:41:23Z-
dc.date.available2014-05-20T14:20:03Z-
dc.date.available2016-10-25T17:41:23Z-
dc.date.issued2008-07-01-
dc.identifierhttp://dx.doi.org/10.1016/j.jlumin.2007.11.095-
dc.identifier.citationJournal of Luminescence. Amsterdam: Elsevier B.V., v. 128, n. 7, p. 1165-1168, 2008.-
dc.identifier.issn0022-2313-
dc.identifier.urihttp://hdl.handle.net/11449/26018-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/26018-
dc.description.abstractGadolinium oxysulfide powders doped with different Tb3+ concentrations were prepared from sulfur vaporization on rare earths' basic carbonate precursors. Single-phase Gd2O2S samples were obtained, with Tb3+ doping up to 9 at%. The study of the excitation mechanisms revealed that the Tb3+ emission might occur after the direct Tb3+ excitation either by energy transfer from Gd3+ or from the phosphor host. The characteristic terbium emission lines were observed, resulting from the radiative decay from D-5(3) or D-5(4), to F-7(j) levels. The cross-relaxation phenomenon was observed and its effects on the materials emission color were discussed based on the CIE diagram. By using time-resolved spectroscopy, D-5(3) -> F-7(J) and D-5(4) -> F-7(J) transitions were separated. (c) 2007 Elsevier B.V. All rights reserved.en
dc.format.extent1165-1168-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectscintillatoren
dc.subjectluminescenceen
dc.subjectcross relaxationen
dc.subjectemission tuningen
dc.titleExcitation mechanisms and effects of dopant concentration in Gd2O2S : Tb3+ phosphoren
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationSão Paulo State Univ, UNESP, Inst Chem, LML, BR-14800900 Araraquara, SP, Brazil-
dc.description.affiliationUnespSão Paulo State Univ, UNESP, Inst Chem, LML, BR-14800900 Araraquara, SP, Brazil-
dc.identifier.doi10.1016/j.jlumin.2007.11.095-
dc.identifier.wosWOS:000255568900011-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Luminescence-
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