Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics
Autor(a) principal: | |
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Data de Publicação: | 2016 |
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.2015.08.077 http://hdl.handle.net/11449/177722 |
Resumo: | This work reports on the Yb3+ ion addition effect on the near infrared emission and infrared-to-visible up conversion from planar waveguides based on Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in SiO2-based nanocomposite prepared by a sol-gel process with controlled crystallization in situ. Planar waveguides and xerogels containing Si/Nb molar ratio of 90:10 up to 50:50 were prepared. Spherical-like orthorhombic or monoclinic Nb2O5 nanocrystals were grown in the amorphous SiO2-based host depending on the niobium content and annealing temperature, resulting in transparent glass ceramics. Crystallization process was intensely affected by rare earth content increase. Enhancement and broadening of the NIR emission has been achieved depending on the rare earth content, niobium content and annealing temperature. Effective Yb3+→Er3+ energy transfer and a high-intensity broad band emission in the near infrared region assigned to the Er3+ ions 4I13/2→4I15/2 transition, and longer 4I13/2 lifetimes were observed for samples containing orthorhombic Nb2O5 nanocrystals. Intense green and red emissions were registered for all Er3+-Yb3+ co-doped waveguides under 980 nm excitation, assigned to 2H11/2→4I15/2 (525 nm),4S3/2→4I15/2 (545nm) and 4F9/2→4I15/2 (670 nm) transitions, respectively. Different relative green and red intensities emissions were observed, depending upon niobium oxide content and the laser power. Upconversion dynamics were determined by the photons number, evidencing that ESA or ETU mechanisms are probably occurring. The 1931 CIE chromaticity diagrams indicated interesting color tunability based on the waveguides composition and pump power. The nanocomposite waveguides are promising materials for photonic applications as optical amplifiers and WDM devices operating in the S, C, and L telecommunication bands; and as upconverter materials for visible upconversion lasers, biomedical applications, energy conversion for solar cells and others. |
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Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonicsBroadband NIR emissionNb2O5Sol-gelUpconversionThis work reports on the Yb3+ ion addition effect on the near infrared emission and infrared-to-visible up conversion from planar waveguides based on Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in SiO2-based nanocomposite prepared by a sol-gel process with controlled crystallization in situ. Planar waveguides and xerogels containing Si/Nb molar ratio of 90:10 up to 50:50 were prepared. Spherical-like orthorhombic or monoclinic Nb2O5 nanocrystals were grown in the amorphous SiO2-based host depending on the niobium content and annealing temperature, resulting in transparent glass ceramics. Crystallization process was intensely affected by rare earth content increase. Enhancement and broadening of the NIR emission has been achieved depending on the rare earth content, niobium content and annealing temperature. Effective Yb3+→Er3+ energy transfer and a high-intensity broad band emission in the near infrared region assigned to the Er3+ ions 4I13/2→4I15/2 transition, and longer 4I13/2 lifetimes were observed for samples containing orthorhombic Nb2O5 nanocrystals. Intense green and red emissions were registered for all Er3+-Yb3+ co-doped waveguides under 980 nm excitation, assigned to 2H11/2→4I15/2 (525 nm),4S3/2→4I15/2 (545nm) and 4F9/2→4I15/2 (670 nm) transitions, respectively. Different relative green and red intensities emissions were observed, depending upon niobium oxide content and the laser power. Upconversion dynamics were determined by the photons number, evidencing that ESA or ETU mechanisms are probably occurring. The 1931 CIE chromaticity diagrams indicated interesting color tunability based on the waveguides composition and pump power. The nanocomposite waveguides are promising materials for photonic applications as optical amplifiers and WDM devices operating in the S, C, and L telecommunication bands; and as upconverter materials for visible upconversion lasers, biomedical applications, energy conversion for solar cells and others.Departamento de Química Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Universidade de São Paulo, Av. Bandeirantes, 3900Grupo de Pesquisa em Química de Materiais - (GPQM) Departamento de Ciências Naturais Universidade Federal de São João Del Rei Campus Dom Bosco, Praça Dom Helvécio, 74Grupo Física de Materiais Instituto de Física Universidade Federal de Goiás Campus II, C.P. 131Institute of Chemistry- São Paulo State University- UNESPPSL Research University Chimie ParisTech - CNRS Institut de Recherche de Chimie ParisSorbonne Universités UPMC Univ Paris 06Institute of Chemistry- São Paulo State University- UNESPUniversidade de São Paulo (USP)Universidade Federal de São João Del ReiUniversidade Federal de Goiás (UFG)Universidade Estadual Paulista (Unesp)Institut de Recherche de Chimie ParisUPMC Univ Paris 06Aquino, Felipe ThomazFerrari, Jefferson LuisMaia, Lauro June QueirozRibeiro, Sidney José Lima [UNESP]Ferrier, AlbanGoldner, PhilippeGonçalves, Rogéria Rocha2018-12-11T17:26:47Z2018-12-11T17:26:47Z2016-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article431-443application/pdfhttp://dx.doi.org/10.1016/j.jlumin.2015.08.077Journal of Luminescence, v. 170, p. 431-443.0022-2313http://hdl.handle.net/11449/17772210.1016/j.jlumin.2015.08.0772-s2.0-849543761442-s2.0-84954376144.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Luminescence0,694info:eu-repo/semantics/openAccess2023-11-26T06:09:13Zoai:repositorio.unesp.br:11449/177722Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:44:44.592068Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics |
title |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics |
spellingShingle |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics Aquino, Felipe Thomaz Broadband NIR emission Nb2O5 Sol-gel Upconversion |
title_short |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics |
title_full |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics |
title_fullStr |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics |
title_full_unstemmed |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics |
title_sort |
Near infrared emission and multicolor tunability of enhanced upconversion emission from Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in silica-based nanocomposite and planar waveguides for photonics |
author |
Aquino, Felipe Thomaz |
author_facet |
Aquino, Felipe Thomaz Ferrari, Jefferson Luis Maia, Lauro June Queiroz Ribeiro, Sidney José Lima [UNESP] Ferrier, Alban Goldner, Philippe Gonçalves, Rogéria Rocha |
author_role |
author |
author2 |
Ferrari, Jefferson Luis Maia, Lauro June Queiroz Ribeiro, Sidney José Lima [UNESP] Ferrier, Alban Goldner, Philippe Gonçalves, Rogéria Rocha |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Federal de São João Del Rei Universidade Federal de Goiás (UFG) Universidade Estadual Paulista (Unesp) Institut de Recherche de Chimie Paris UPMC Univ Paris 06 |
dc.contributor.author.fl_str_mv |
Aquino, Felipe Thomaz Ferrari, Jefferson Luis Maia, Lauro June Queiroz Ribeiro, Sidney José Lima [UNESP] Ferrier, Alban Goldner, Philippe Gonçalves, Rogéria Rocha |
dc.subject.por.fl_str_mv |
Broadband NIR emission Nb2O5 Sol-gel Upconversion |
topic |
Broadband NIR emission Nb2O5 Sol-gel Upconversion |
description |
This work reports on the Yb3+ ion addition effect on the near infrared emission and infrared-to-visible up conversion from planar waveguides based on Er3+-Yb3+ co-doped Nb2O5 nanocrystals embedded in SiO2-based nanocomposite prepared by a sol-gel process with controlled crystallization in situ. Planar waveguides and xerogels containing Si/Nb molar ratio of 90:10 up to 50:50 were prepared. Spherical-like orthorhombic or monoclinic Nb2O5 nanocrystals were grown in the amorphous SiO2-based host depending on the niobium content and annealing temperature, resulting in transparent glass ceramics. Crystallization process was intensely affected by rare earth content increase. Enhancement and broadening of the NIR emission has been achieved depending on the rare earth content, niobium content and annealing temperature. Effective Yb3+→Er3+ energy transfer and a high-intensity broad band emission in the near infrared region assigned to the Er3+ ions 4I13/2→4I15/2 transition, and longer 4I13/2 lifetimes were observed for samples containing orthorhombic Nb2O5 nanocrystals. Intense green and red emissions were registered for all Er3+-Yb3+ co-doped waveguides under 980 nm excitation, assigned to 2H11/2→4I15/2 (525 nm),4S3/2→4I15/2 (545nm) and 4F9/2→4I15/2 (670 nm) transitions, respectively. Different relative green and red intensities emissions were observed, depending upon niobium oxide content and the laser power. Upconversion dynamics were determined by the photons number, evidencing that ESA or ETU mechanisms are probably occurring. The 1931 CIE chromaticity diagrams indicated interesting color tunability based on the waveguides composition and pump power. The nanocomposite waveguides are promising materials for photonic applications as optical amplifiers and WDM devices operating in the S, C, and L telecommunication bands; and as upconverter materials for visible upconversion lasers, biomedical applications, energy conversion for solar cells and others. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-02-01 2018-12-11T17:26:47Z 2018-12-11T17:26:47Z |
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.2015.08.077 Journal of Luminescence, v. 170, p. 431-443. 0022-2313 http://hdl.handle.net/11449/177722 10.1016/j.jlumin.2015.08.077 2-s2.0-84954376144 2-s2.0-84954376144.pdf |
url |
http://dx.doi.org/10.1016/j.jlumin.2015.08.077 http://hdl.handle.net/11449/177722 |
identifier_str_mv |
Journal of Luminescence, v. 170, p. 431-443. 0022-2313 10.1016/j.jlumin.2015.08.077 2-s2.0-84954376144 2-s2.0-84954376144.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Luminescence 0,694 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
431-443 application/pdf |
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_ |
1808128973204357120 |