Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://doi.org/10.1016/j.matchemphys.2008.07.030 http://www.locus.ufv.br/handle/123456789/22312 |
Resumo: | Laponite-derived materials represent promising materials for optical applications. In this work, Eu^3+- or Er^3+-doped laponite xerogels and films were prepared from colloidal dispersion. Homogeneous, crack-free and transparent single layers were deposited on soda-lime substrates with a thickness of 10 μm. Structural and spectroscopic properties were analyzed by thermal analyses, X-ray diffractometry, transmission electron microscopy, infrared spectroscopy, and luminescence spectroscopy. The addition of a rare earth ion to the laponite does not promote any changes in thermal stability or phase transition. Laponite clay was identified after annealing up to 500 °C, with a decrease in basal spacing when the annealing temperature is changed from 100 °C to 500 °C. Enstatite polymorphs and amorphous silicate phases were observed after heat treatment at 700 °C and 900 °C. Stationary and time-dependent luminescence spectra in the visible region for Eu^3+, and 5D0 lifetime are discussed in terms of thermal treatment and structural evolution. In the layered host, the Eu^3+ ions are distributed in many different local environments. However, Eu^3+ ions were found to occupy at least two symmetry sites, and the ions are preferentially incorporated into the crystalline enstatite for the materials annealed at 700 °C and 900 °C. A 5D0 lifetime of 1.3 ms and 3.1 ms was obtained for Eu^3+ ions in an amorphous silicate and crystalline MgSiO3 local environment, respectively. Strong Er^3+ emission at the 1550 nm region was observed for the materials annealed at 900 °C, with a bandwidth of 44 nm. |
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Tronto, JairoRibeiro, Sidney José LimaValim, João BarrosGonçalves, Rogéria Rocha2018-10-17T11:08:24Z2018-10-17T11:08:24Z2009-01-1502540584https://doi.org/10.1016/j.matchemphys.2008.07.030http://www.locus.ufv.br/handle/123456789/22312Laponite-derived materials represent promising materials for optical applications. In this work, Eu^3+- or Er^3+-doped laponite xerogels and films were prepared from colloidal dispersion. Homogeneous, crack-free and transparent single layers were deposited on soda-lime substrates with a thickness of 10 μm. Structural and spectroscopic properties were analyzed by thermal analyses, X-ray diffractometry, transmission electron microscopy, infrared spectroscopy, and luminescence spectroscopy. The addition of a rare earth ion to the laponite does not promote any changes in thermal stability or phase transition. Laponite clay was identified after annealing up to 500 °C, with a decrease in basal spacing when the annealing temperature is changed from 100 °C to 500 °C. Enstatite polymorphs and amorphous silicate phases were observed after heat treatment at 700 °C and 900 °C. Stationary and time-dependent luminescence spectra in the visible region for Eu^3+, and 5D0 lifetime are discussed in terms of thermal treatment and structural evolution. In the layered host, the Eu^3+ ions are distributed in many different local environments. However, Eu^3+ ions were found to occupy at least two symmetry sites, and the ions are preferentially incorporated into the crystalline enstatite for the materials annealed at 700 °C and 900 °C. A 5D0 lifetime of 1.3 ms and 3.1 ms was obtained for Eu^3+ ions in an amorphous silicate and crystalline MgSiO3 local environment, respectively. Strong Er^3+ emission at the 1550 nm region was observed for the materials annealed at 900 °C, with a bandwidth of 44 nm.engMaterials Chemistry and Physicsv. 113, n. 1, p. 71- 77, jan. 2009Elsevier B.V.info:eu-repo/semantics/openAccessClaysLaponiteRare earthEuropiumErbiumXerogelsFilms and silicateVisible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic propertiesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdftexto completoapplication/pdf1125960https://locus.ufv.br//bitstream/123456789/22312/1/artigo.pdfa2d16e888c730136267648b83456bdbeMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/22312/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/223122018-10-17 08:13:55.79oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452018-10-17T11:13:55LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties |
title |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties |
spellingShingle |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties Tronto, Jairo Clays Laponite Rare earth Europium Erbium Xerogels Films and silicate |
title_short |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties |
title_full |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties |
title_fullStr |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties |
title_full_unstemmed |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties |
title_sort |
Visible and near-infrared luminescent Eu3+ or Er3+ doped laponite-derived xerogels and thick films: structural and spectroscopic properties |
author |
Tronto, Jairo |
author_facet |
Tronto, Jairo Ribeiro, Sidney José Lima Valim, João Barros Gonçalves, Rogéria Rocha |
author_role |
author |
author2 |
Ribeiro, Sidney José Lima Valim, João Barros Gonçalves, Rogéria Rocha |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Tronto, Jairo Ribeiro, Sidney José Lima Valim, João Barros Gonçalves, Rogéria Rocha |
dc.subject.pt-BR.fl_str_mv |
Clays Laponite Rare earth Europium Erbium Xerogels Films and silicate |
topic |
Clays Laponite Rare earth Europium Erbium Xerogels Films and silicate |
description |
Laponite-derived materials represent promising materials for optical applications. In this work, Eu^3+- or Er^3+-doped laponite xerogels and films were prepared from colloidal dispersion. Homogeneous, crack-free and transparent single layers were deposited on soda-lime substrates with a thickness of 10 μm. Structural and spectroscopic properties were analyzed by thermal analyses, X-ray diffractometry, transmission electron microscopy, infrared spectroscopy, and luminescence spectroscopy. The addition of a rare earth ion to the laponite does not promote any changes in thermal stability or phase transition. Laponite clay was identified after annealing up to 500 °C, with a decrease in basal spacing when the annealing temperature is changed from 100 °C to 500 °C. Enstatite polymorphs and amorphous silicate phases were observed after heat treatment at 700 °C and 900 °C. Stationary and time-dependent luminescence spectra in the visible region for Eu^3+, and 5D0 lifetime are discussed in terms of thermal treatment and structural evolution. In the layered host, the Eu^3+ ions are distributed in many different local environments. However, Eu^3+ ions were found to occupy at least two symmetry sites, and the ions are preferentially incorporated into the crystalline enstatite for the materials annealed at 700 °C and 900 °C. A 5D0 lifetime of 1.3 ms and 3.1 ms was obtained for Eu^3+ ions in an amorphous silicate and crystalline MgSiO3 local environment, respectively. Strong Er^3+ emission at the 1550 nm region was observed for the materials annealed at 900 °C, with a bandwidth of 44 nm. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-01-15 |
dc.date.accessioned.fl_str_mv |
2018-10-17T11:08:24Z |
dc.date.available.fl_str_mv |
2018-10-17T11:08:24Z |
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 |
https://doi.org/10.1016/j.matchemphys.2008.07.030 http://www.locus.ufv.br/handle/123456789/22312 |
dc.identifier.issn.none.fl_str_mv |
02540584 |
identifier_str_mv |
02540584 |
url |
https://doi.org/10.1016/j.matchemphys.2008.07.030 http://www.locus.ufv.br/handle/123456789/22312 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
v. 113, n. 1, p. 71- 77, jan. 2009 |
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Elsevier B.V. info:eu-repo/semantics/openAccess |
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Elsevier B.V. |
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openAccess |
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Materials Chemistry and Physics |
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Materials Chemistry and Physics |
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