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DC Field | Value | Language |
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dc.contributor.author | Gouveia-Neto, A. S. | - |
dc.contributor.author | da Costa, E. B. | - |
dc.contributor.author | Bueno, L. A. | - |
dc.contributor.author | Ribeiro, SJL | - |
dc.date.accessioned | 2014-05-20T15:22:47Z | - |
dc.date.accessioned | 2016-10-25T17:56:34Z | - |
dc.date.available | 2014-05-20T15:22:47Z | - |
dc.date.available | 2016-10-25T17:56:34Z | - |
dc.date.issued | 2004-10-01 | - |
dc.identifier | http://dx.doi.org/10.1016/j.jlumin.2004.04.005 | - |
dc.identifier.citation | Journal of Luminescence. Amsterdam: Elsevier B.V., v. 110, n. 1-2, p. 79-84, 2004. | - |
dc.identifier.issn | 0022-2313 | - |
dc.identifier.uri | http://hdl.handle.net/11449/33713 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/33713 | - |
dc.description.abstract | Intense red upconversion emission around 650 nm in PbGeO3-PbF2-CdF2 transparent glass ceramic containing beta-PbF2:Ho3+ nanocrystals, is presented. The holmium-doped vitroceramic samples were excited by a 980 nm diode laser source. The 650 nm upconversion signal was assigned to the F-5(5) --> I-5(8) transition of holmium ions. Very low intensity signals around 490 and 540 nm corresponding to the F-5(2,3) --> I-5(8) and S-4(2), F-5(4) --> I-5(8) transitions, respectively, were also detected. The upconversion excitation mechanism was achieved through a combination of stepwise phonon-assisted multiphoton absorption, cross-relaxation processes involving pairs of holmium ions, and excited-state absorption. Using a diode laser pump source around 850 nm green upconversion emission around 540 nm was the observed predominant signal. (C) 2004 Elsevier B.V. All rights reserved. | en |
dc.format.extent | 79-84 | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.source | Web of Science | - |
dc.subject | vitroceramic | pt |
dc.subject | holmium | pt |
dc.subject | upconversion | pt |
dc.subject | luminescence | pt |
dc.subject | energy-transfer | pt |
dc.title | Intense red upconversion emission in infrared excited holmium-doped PbGeO3-PbF2-CdF2 transparent glass ceramic | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Federal Rural de Pernambuco (UFRPE) | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | Univ Fed Rural Pernambuco, Dept Fis & Matemat, Lab Foton, BR-52171900 Recife, PE, Brazil | - |
dc.description.affiliation | UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil | - |
dc.description.affiliationUnesp | UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil | - |
dc.identifier.doi | 10.1016/j.jlumin.2004.04.005 | - |
dc.identifier.wos | WOS:000223874800008 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Journal of Luminescence | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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