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dc.contributor.authorGomez, Luis A.-
dc.contributor.authorMenezes, Leonardo de S.-
dc.contributor.authorde Araujo, Cid B.-
dc.contributor.authorGoncalves, Rogeria R.-
dc.contributor.authorRibeiro, Sidney José Lima-
dc.contributor.authorMessaddeq, Younes-
dc.date.accessioned2014-05-20T14:20:29Z-
dc.date.accessioned2016-10-25T17:41:39Z-
dc.date.available2014-05-20T14:20:29Z-
dc.date.available2016-10-25T17:41:39Z-
dc.date.issued2010-06-01-
dc.identifierhttp://dx.doi.org/10.1063/1.3428478-
dc.identifier.citationJournal of Applied Physics. Melville: Amer Inst Physics, v. 107, n. 11, p. 5, 2010.-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/11449/26160-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/26160-
dc.description.abstractFrequency upconversion (UC) luminescence in nanocrystalline zirconia (ZrO2) and hafnia (HfO2) doped with Er3+ and Yb3+ was studied under continuous-wave excitation at 980 nm. Samples of ZrO2:Er3+, ZrO2:Er3+/Yb3+, and HfO2:Er3+/Yb3+ were prepared by the sol-gel technique and characterized using x-ray diffraction and electron microscopy. A study of the infrared-to-green and infrared-to-red UC processes was performed including the analysis of the spectral and the temporal behavior. The mechanisms contributing to the UC luminescence were identified as excited state absorption and energy transfer among rare-earth ions. (C) 2010 American Institute of Physics. [doi:10.1063/1.3428478]en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipFundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (FACEPE)-
dc.format.extent5-
dc.language.isoeng-
dc.publisherAmerican Institute of Physics (AIP)-
dc.sourceWeb of Science-
dc.subjectdielectric materialsen
dc.subjectdopingen
dc.subjectelectron microscopyen
dc.subjecterbiumen
dc.subjecthafnium compoundsen
dc.subjectimpurity absorption spectraen
dc.subjectinfrared spectraen
dc.subjectnanofabricationen
dc.subjectnanostructured materialsen
dc.subjectphotoexcitationen
dc.subjectphotoluminescenceen
dc.subjectsol-gel processingen
dc.subjectX-ray diffractionen
dc.subjectytterbiumen
dc.subjectzirconium compoundsen
dc.titleUpconversion luminescence in Er3+ doped and Er3+/Yb3+ codoped zirconia and hafnia nanocrystals excited at 980 nmen
dc.typeoutro-
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniversidade Federal de Pernambuco (UFPE), Dept Fis, BR-50670901 Recife, PE, Brazil-
dc.description.affiliationFFCLRP USP, Dept Quim, BR-1404090 Ribeirao Preto, SP, Brazil-
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil-
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil-
dc.identifier.doi10.1063/1.3428478-
dc.identifier.wosWOS:000278907100031-
dc.rights.accessRightsAcesso restrito-
dc.identifier.fileWOS000278907100031.pdf-
dc.relation.ispartofJournal of Applied Physics-
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