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http://acervodigital.unesp.br/handle/11449/76729
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DC Field | Value | Language |
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dc.contributor.author | Borrero-González, L. J. | - |
dc.contributor.author | Galleani, G. | - |
dc.contributor.author | Manzani, D. | - |
dc.contributor.author | Nunes, L. A O | - |
dc.contributor.author | Ribeiro, Sidney José Lima | - |
dc.date.accessioned | 2014-05-27T11:30:47Z | - |
dc.date.accessioned | 2016-10-25T18:54:39Z | - |
dc.date.available | 2014-05-27T11:30:47Z | - |
dc.date.available | 2016-10-25T18:54:39Z | - |
dc.date.issued | 2013-10-01 | - |
dc.identifier | http://dx.doi.org/10.1016/j.optmat.2013.05.024 | - |
dc.identifier.citation | Optical Materials, v. 35, n. 12, p. 2085-2089, 2013. | - |
dc.identifier.issn | 0925-3467 | - |
dc.identifier.uri | http://hdl.handle.net/11449/76729 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/76729 | - |
dc.description.abstract | Processes involving visible to infrared energy conversion are presented for Pr3+-Yb3+ co-doped fluoroindate glasses. The emission in the visible and infrared regions, the luminescence decay time of the Pr 3+:3P0 → 3H4 (482 nm), Pr3+:1D2 → 3H6 (800 nm), Yb3+:2F5/2 → 2F 7/2 (1044 nm) transitions and the photoluminescence excitation spectra were measured in Pr3+ samples and in Pr3+-Yb 3+ samples as a function of the Yb3+ concentration. In addition, energy transfer efficiencies were estimated from Pr3+: 3P0 and Pr3+:1D2 levels to Yb3+:2F7/2 level. Down-Conversion (DC) emission is observed due to a combination of two different processes: 1-a one-step cross relaxation (Pr3+:3P0 → 1G4; Yb3+:2F7/2 → 2F5/2) resulting in one photon emitted by Pr3+ (1G4 → 3H5) and one photon emitted by Yb3+ (2F7/2 → 2F5/2); 2-a resonant two-step first order energy transfer, where the first part of energy is transferred to Yb3+ neighbor through cross relaxation (Pr3+:3P0 → 1G4; Yb3+:2F7/2 → 2F5/2) followed by a second energy transfer step (Pr 3+:1G4 → 3H4; Yb3+:2F7/2 → 2F5/2). A third process leading to one IR photon emission to each visible photon absorbed involves cross relaxation energy transfer (Pr3+: 1D2 → 3F4; Yb 3+:2F7/2 → 2F5/2). © 2013 Elsevier B.V. All rights reserved. | en |
dc.format.extent | 2085-2089 | - |
dc.language.iso | eng | - |
dc.source | Scopus | - |
dc.subject | Fluoroindate glasses Frequency down-conversion Lanthanides Energy transfer | - |
dc.title | Visible to infrared energy conversion in Pr3+-Yb3+ co-doped fluoroindate glasses | en |
dc.type | outro | - |
dc.contributor.institution | Universidade de São Paulo (USP) | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | Instituto de Física de São Carlos Universidade de São Paulo, CP 369, São Carlos, SP 13560-970 | - |
dc.description.affiliation | Institute of Chemistry São Paulo State Univ - UNESP, CP 355, Araraquara, SP 14801-970 | - |
dc.description.affiliationUnesp | Institute of Chemistry São Paulo State Univ - UNESP, CP 355, Araraquara, SP 14801-970 | - |
dc.identifier.doi | 10.1016/j.optmat.2013.05.024 | - |
dc.identifier.wos | WOS:000326660500008 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Optical Materials | - |
dc.identifier.scopus | 2-s2.0-84885078551 | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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