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dc.contributor.authorBomfim, F. A.
dc.contributor.authorMartinelli, J. R.
dc.contributor.authorKassab, L. R P [UNESP]
dc.contributor.authorWetter, N. U.
dc.contributor.authorNeto, J. J.
dc.date.accessioned2014-05-20T15:31:31Z
dc.date.available2014-05-20T15:31:31Z
dc.date.issued2008-11-01
dc.identifierhttp://dx.doi.org/10.1016/j.jnoncrysol.2008.04.033
dc.identifier.citationJournal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 354, n. 42-44, p. 4755-4759, 2008.
dc.identifier.issn0022-3093
dc.identifier.urihttp://hdl.handle.net/11449/40627
dc.description.abstractThe effect of Yb3+ concentration on the frequency upconversion (UPC) of Er3+ in PbO-GeO2-Ga2O3 glasses is reported for the first time. Samples were prepared with 0.5 wt% of Er2O3 and different concentrations of Yb2O3 (1.0-5.0 wt%). The green (523 and 545 nm) and red (657 mm) emissions are observed under 980 nm diode laser excitation. The dependence of the frequency UPC emission intensity upon the excitation power was examined and the UPC mechanisms are discussed. An interesting characteristic of these glasses is the increase of the ratio of red to green emission, through an increase of the Yb3+ concentration due to an efficient energy transfer from Yb3+ to Er3+. (c) 2008 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipCNEN
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent4755-4759
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Non-Crystalline Solids
dc.sourceWeb of Science
dc.subjectGlassesen
dc.subjectLaser spectroscopyen
dc.subjectLuminescenceen
dc.subjectRare-earthen
dc.titleEffect of the ytterbium concentration on the upconversion luminescence of Yb3+/Er3+ co-doped PbO-GeO2-Ga2O3 glassesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dc.contributor.institutionInstituto de Pesquisas Energéticas e Nucleares (IPEN)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationIPEN CNEN SP, Ctr Ciencias & Tecnol Mat, BR-05508000 São Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, CEETEPS, FATEC SP, Lab Vidros & Datacoes, São Paulo, Brazil
dc.description.affiliationIPEN CNEN SP, Ctr Lasers & Aplicacoes, São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, CEETEPS, FATEC SP, Lab Vidros & Datacoes, São Paulo, Brazil
dc.identifier.doi10.1016/j.jnoncrysol.2008.04.033
dc.identifier.wosWOS:000260883400011
dc.rights.accessRightsAcesso restrito
unesp.author.orcid0000-0002-6795-5712[3]
unesp.author.orcid0000-0002-9379-9530[4]
dc.relation.ispartofjcr2.488
dc.relation.ispartofsjr0,722
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