Blue cooperative emission in Yb3+ - doped GeO2 - PbO glasses
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
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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Materials research (São Carlos. Online) |
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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 |
_version_ |
1754212658155880448 |