Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jlumin.2022.118812 http://hdl.handle.net/11449/223602 |
Resumo: | To our knowledge, for the first time Eu2O3-doped lithium tellurite (TL) glasses are synthesized under vacuum conditions. The structural and optical spectroscopic properties are discussed. This investigation shows that the europium doped TL glasses prepared under vacuum (Eu3+-doped TL-vac) present low OH− concentration, which increases the transparency in the visible spectral range due to a decrease in TeO4 unity and an increase of the transparency in the mid-infrared spectral region. The luminescence spectra show several emission bands from superior energy levels 5D0, 5D1, 5D2 and 5D3→7FJ (J = from 0 to 4). Time resolved luminescence experiments allow the observation of the energy relaxation and migration among the 5D3→5D1 to 7F0→7F6 and 5D1→5D0 to 7F0→7F3 energy levels due to Eu3+ ions pairs, reported here for the first time. The Judd-Ofelt analysis of the emission spectrum allowed us to determine the phenomenological parameters Ω2 and Ω4, indicating that Eu3+ presents less covalent characteristics, less compactness than in others tellurite glasses, and a quantum efficiency of the 5D0 energy level of 51%. These results indicate that TL-vac glass doped with rare earths can be promising candidates for new optical devices. |
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Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanismAlmost OH− Free tellurite glasses DEnergy migration CEu3+ ion BVacuum condition DTo our knowledge, for the first time Eu2O3-doped lithium tellurite (TL) glasses are synthesized under vacuum conditions. The structural and optical spectroscopic properties are discussed. This investigation shows that the europium doped TL glasses prepared under vacuum (Eu3+-doped TL-vac) present low OH− concentration, which increases the transparency in the visible spectral range due to a decrease in TeO4 unity and an increase of the transparency in the mid-infrared spectral region. The luminescence spectra show several emission bands from superior energy levels 5D0, 5D1, 5D2 and 5D3→7FJ (J = from 0 to 4). Time resolved luminescence experiments allow the observation of the energy relaxation and migration among the 5D3→5D1 to 7F0→7F6 and 5D1→5D0 to 7F0→7F3 energy levels due to Eu3+ ions pairs, reported here for the first time. The Judd-Ofelt analysis of the emission spectrum allowed us to determine the phenomenological parameters Ω2 and Ω4, indicating that Eu3+ presents less covalent characteristics, less compactness than in others tellurite glasses, and a quantum efficiency of the 5D0 energy level of 51%. These results indicate that TL-vac glass doped with rare earths can be promising candidates for new optical devices.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Grupo de Espectroscopia Óptica e Fototérmica-GEOF Centro de Estudos Em Recursos Naturais-CERNA Universidade Estadual de Mato Grosso Do Sul-UEMS, 351, MSGrupo Vidros e Cerâmicas Universidade Estadual Paulista - UNESP, SPInstitute of Glass and Ceramics Friedrich-Alexander University Erlangen-Nürnberg, Martensstrasse 5Instituto de Física de São Carlos-IFSC Universidade de São Paulo-USP, SPGrupo Vidros e Cerâmicas Universidade Estadual Paulista - UNESP, SPUniversidade Estadual de Mato Grosso do Sul (UEMS)Universidade Estadual Paulista (UNESP)Friedrich-Alexander University Erlangen-NürnbergUniversidade de São Paulo (USP)Andrade, L. H.C.Lima, S. M.Silva, R. A.Devecchi, M. R.Moraes, J. C.S. [UNESP]de Ligny, D.Nunes, L. A.O.2022-04-28T19:51:45Z2022-04-28T19:51:45Z2022-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jlumin.2022.118812Journal of Luminescence, v. 246.0022-2313http://hdl.handle.net/11449/22360210.1016/j.jlumin.2022.1188122-s2.0-85126061113Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Luminescenceinfo:eu-repo/semantics/openAccess2022-04-28T19:51:45Zoai:repositorio.unesp.br:11449/223602Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:49:46.760480Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism |
title |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism |
spellingShingle |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism Andrade, L. H.C. Almost OH− Free tellurite glasses D Energy migration C Eu3+ ion B Vacuum condition D |
title_short |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism |
title_full |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism |
title_fullStr |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism |
title_full_unstemmed |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism |
title_sort |
Eu3+-doped lithium tellurite glasses prepared under vacuum condition: Spectroscopic investigation and energy transfer mechanism |
author |
Andrade, L. H.C. |
author_facet |
Andrade, L. H.C. Lima, S. M. Silva, R. A. Devecchi, M. R. Moraes, J. C.S. [UNESP] de Ligny, D. Nunes, L. A.O. |
author_role |
author |
author2 |
Lima, S. M. Silva, R. A. Devecchi, M. R. Moraes, J. C.S. [UNESP] de Ligny, D. Nunes, L. A.O. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Mato Grosso do Sul (UEMS) Universidade Estadual Paulista (UNESP) Friedrich-Alexander University Erlangen-Nürnberg Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Andrade, L. H.C. Lima, S. M. Silva, R. A. Devecchi, M. R. Moraes, J. C.S. [UNESP] de Ligny, D. Nunes, L. A.O. |
dc.subject.por.fl_str_mv |
Almost OH− Free tellurite glasses D Energy migration C Eu3+ ion B Vacuum condition D |
topic |
Almost OH− Free tellurite glasses D Energy migration C Eu3+ ion B Vacuum condition D |
description |
To our knowledge, for the first time Eu2O3-doped lithium tellurite (TL) glasses are synthesized under vacuum conditions. The structural and optical spectroscopic properties are discussed. This investigation shows that the europium doped TL glasses prepared under vacuum (Eu3+-doped TL-vac) present low OH− concentration, which increases the transparency in the visible spectral range due to a decrease in TeO4 unity and an increase of the transparency in the mid-infrared spectral region. The luminescence spectra show several emission bands from superior energy levels 5D0, 5D1, 5D2 and 5D3→7FJ (J = from 0 to 4). Time resolved luminescence experiments allow the observation of the energy relaxation and migration among the 5D3→5D1 to 7F0→7F6 and 5D1→5D0 to 7F0→7F3 energy levels due to Eu3+ ions pairs, reported here for the first time. The Judd-Ofelt analysis of the emission spectrum allowed us to determine the phenomenological parameters Ω2 and Ω4, indicating that Eu3+ presents less covalent characteristics, less compactness than in others tellurite glasses, and a quantum efficiency of the 5D0 energy level of 51%. These results indicate that TL-vac glass doped with rare earths can be promising candidates for new optical devices. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:51:45Z 2022-04-28T19:51:45Z 2022-06-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.jlumin.2022.118812 Journal of Luminescence, v. 246. 0022-2313 http://hdl.handle.net/11449/223602 10.1016/j.jlumin.2022.118812 2-s2.0-85126061113 |
url |
http://dx.doi.org/10.1016/j.jlumin.2022.118812 http://hdl.handle.net/11449/223602 |
identifier_str_mv |
Journal of Luminescence, v. 246. 0022-2313 10.1016/j.jlumin.2022.118812 2-s2.0-85126061113 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Luminescence |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128707727982592 |