Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses

Detalhes bibliográficos
Autor(a) principal: Del Cacho,Vanessa Duarte
Data de Publicação: 2006
Outros Autores: Kassab,Luciana Reyes Pires, Oliveira,Samuel Leite de, Morimoto,Nilton Itiro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000100005
Resumo: Investigation of the blue cooperative luminescence in a binary composition of GeO2-PbO glasses with different Yb3+ concentrations is reported. High refractive index (1.96) and large transmission window (0.4 up to 5.0 µm) are characteristics of this vitreous system. Luminescence and lifetime measurements in the visible and near infrared regions were performed to investigate the spectroscopic characteristics of the glasses. Visible emission around 507 nm was detected in all samples. The visible emission intensity increases with the Yb2O3 content at least up to 2.0 wt. (%), that represents the maximum Yb2O3 concentration possible for this glass system. The visible lifetimes are about half of their respective near infrared ones, and the blue luminescence comes from a cooperative process. A rate equation was used to describe the behavior of the cooperative emission intensity as a function of Yb2O3 concentration; a good agreement with the calculated and measured cooperative luminescence was achieved.
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spelling Blue cooperative emission in Yb3+ - doped GeO2 - PbO glassesglassesytterbiumcooperative luminescenceInvestigation of the blue cooperative luminescence in a binary composition of GeO2-PbO glasses with different Yb3+ concentrations is reported. High refractive index (1.96) and large transmission window (0.4 up to 5.0 µm) are characteristics of this vitreous system. Luminescence and lifetime measurements in the visible and near infrared regions were performed to investigate the spectroscopic characteristics of the glasses. Visible emission around 507 nm was detected in all samples. The visible emission intensity increases with the Yb2O3 content at least up to 2.0 wt. (%), that represents the maximum Yb2O3 concentration possible for this glass system. The visible lifetimes are about half of their respective near infrared ones, and the blue luminescence comes from a cooperative process. A rate equation was used to describe the behavior of the cooperative emission intensity as a function of Yb2O3 concentration; a good agreement with the calculated and measured cooperative luminescence was achieved.ABM, ABC, ABPol2006-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000100005Materials Research v.9 n.1 2006reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392006000100005info:eu-repo/semantics/openAccessDel Cacho,Vanessa DuarteKassab,Luciana Reyes PiresOliveira,Samuel Leite deMorimoto,Nilton Itiroeng2006-04-10T00:00:00Zoai:scielo:S1516-14392006000100005Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2006-04-10T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
title Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
spellingShingle Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
Del Cacho,Vanessa Duarte
glasses
ytterbium
cooperative luminescence
title_short Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
title_full Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
title_fullStr Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
title_full_unstemmed Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
title_sort Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
author Del Cacho,Vanessa Duarte
author_facet Del Cacho,Vanessa Duarte
Kassab,Luciana Reyes Pires
Oliveira,Samuel Leite de
Morimoto,Nilton Itiro
author_role author
author2 Kassab,Luciana Reyes Pires
Oliveira,Samuel Leite de
Morimoto,Nilton Itiro
author2_role author
author
author
dc.contributor.author.fl_str_mv Del Cacho,Vanessa Duarte
Kassab,Luciana Reyes Pires
Oliveira,Samuel Leite de
Morimoto,Nilton Itiro
dc.subject.por.fl_str_mv glasses
ytterbium
cooperative luminescence
topic glasses
ytterbium
cooperative luminescence
description Investigation of the blue cooperative luminescence in a binary composition of GeO2-PbO glasses with different Yb3+ concentrations is reported. High refractive index (1.96) and large transmission window (0.4 up to 5.0 µm) are characteristics of this vitreous system. Luminescence and lifetime measurements in the visible and near infrared regions were performed to investigate the spectroscopic characteristics of the glasses. Visible emission around 507 nm was detected in all samples. The visible emission intensity increases with the Yb2O3 content at least up to 2.0 wt. (%), that represents the maximum Yb2O3 concentration possible for this glass system. The visible lifetimes are about half of their respective near infrared ones, and the blue luminescence comes from a cooperative process. A rate equation was used to describe the behavior of the cooperative emission intensity as a function of Yb2O3 concentration; a good agreement with the calculated and measured cooperative luminescence was achieved.
publishDate 2006
dc.date.none.fl_str_mv 2006-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000100005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000100005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392006000100005
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.9 n.1 2006
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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