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Efficient UV-visible upconversion luminescence and thermal effects in terbium-ytterbium codoped fluorogermanate vitroceramic

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dc.contributor.authorGouveia-Neto, Artur Da S.
dc.contributor.authorBueno, Luciano A.
dc.contributor.authorDo Nascimento, Raphael F.
dc.contributor.authorDa Silva, Elias A.
dc.contributor.authorDo Nascimento, Valberes B.
dc.contributor.authorCosta, Ernande B.
dc.contributor.authorRibeiro, Sidney José Lima [UNESP]
dc.contributor.authorMessaddeq, Younes [UNESP]
dc.contributor.institutionUniversidade Federal Rural de Pernambuco (UFRPE)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:23:34Z
dc.date.available2014-05-27T11:23:34Z
dc.date.issued2008-06-13
dc.description.abstractCooperative energy-transfer upconversion luminescence in Tb 3+/Yb 3+-codoped PbGeO 3-PbF 2-CdF 2 vitroceramic and its precursor glass under resonant and off-resonance infrared excitation, is investigated. Bright UV-visible emission signals around 384, 415, 438 nm, and 473-490, 545, 587, and 623 nm, identified as due to the 5D 3( 5G 6 → 7F J(J=6,5,4) and 5D 4 → 7F J(J=6,5,4,3) transitions, respectively, were readily observed. The results indicate that cooperative energy-transfer between ytterbium and terbium ions followed by excited-state absorption are the dominant upconversion excitation mechanisms herein involved. The comparison of the upconversion process in a vitroceramic sample and its glassy precursor revealed that the former present much higher upconversion efficiency. The dependence of the upconversion emission upon pump power, temperature, and doping content is also examined.en
dc.description.affiliationLaboratório de Fotônica Departamento de Física Universidade Federal Rural de Pernambuco, Recife, PE, 52171/900
dc.description.affiliationLaboratório de Inorgânica Departamento de Química Universidade Federal Rural de Pernambuco, Recife, PE, 52171/900
dc.description.affiliationInstituto de Química UNESP, Araraquara - SP - 14800/900
dc.description.affiliationUnespInstituto de Química UNESP, Araraquara - SP - 14800/900
dc.identifierhttp://dx.doi.org/10.1117/12.759685
dc.identifier.citationProceedings of SPIE - The International Society for Optical Engineering, v. 6875.
dc.identifier.doi10.1117/12.759685
dc.identifier.issn0277-786X
dc.identifier.lattes6446047463034654
dc.identifier.lattes2998503841917815
dc.identifier.orcid0000-0003-3286-9440
dc.identifier.scopus2-s2.0-44849118448
dc.identifier.urihttp://hdl.handle.net/11449/70436
dc.language.isoeng
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineering
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectGlass-ceramic
dc.subjectRare-earth
dc.subjectUpconversion
dc.subjectUV-visible
dc.subjectEnergy resources
dc.subjectGadolinium compounds
dc.subjectLight emission
dc.subjectLight sources
dc.subjectLuminescence
dc.subjectNonlinear programming
dc.subjectPigments
dc.subjectPower generation
dc.subjectRadiation
dc.subjectTerbium alloys
dc.subjectCo-doped
dc.subjectNonlinear frequency
dc.subjectUpconversion luminescence (UCL)
dc.subjectVitroceramic
dc.subjectEnergy conversion
dc.titleEfficient UV-visible upconversion luminescence and thermal effects in terbium-ytterbium codoped fluorogermanate vitroceramicen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://proceedings.spiedigitallibrary.org/ss/TermsOfUse.aspx
dspace.entity.typePublication
unesp.author.lattes6446047463034654
unesp.author.lattes2998503841917815
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentQuímica Inorgânica - IQARpt

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Araraquara - IQAR - Instituto de Química