Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor

Detalhes bibliográficos
Autor(a) principal: Deltreggia, Lucas Angelini [UNESP]
Data de Publicação: 2018
Outros Autores: Bernardi, Maria Inês Basso, Mesquita, Alexandre [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.scriptamat.2018.07.018
http://hdl.handle.net/11449/171262
Resumo: Pr3+-doped perovskite-based SrTiO3 phosphors have been developed as a potential red phosphor. In this paper, we report the substitution of La3+ ions for Sr2+ ions in order to promote Sr vacancies to further enhance photoluminescence. Given that the La content increases, an enhancement in the intensity of all emissions is observed, mainly for 1D2–3H4 and 3P0–3H6 transitions. This enhancement of photoluminescence emissions is associated with disorder in the lattice caused by La incorporation. Raman measurements and X-ray absorption near edge structure (XANES) spectra at the Ti K-edge identify this disorder as a function of the La content.
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spelling Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphorPr3+-doped perovskite-based SrTiO3 phosphors have been developed as a potential red phosphor. In this paper, we report the substitution of La3+ ions for Sr2+ ions in order to promote Sr vacancies to further enhance photoluminescence. Given that the La content increases, an enhancement in the intensity of all emissions is observed, mainly for 1D2–3H4 and 3P0–3H6 transitions. This enhancement of photoluminescence emissions is associated with disorder in the lattice caused by La incorporation. Raman measurements and X-ray absorption near edge structure (XANES) spectra at the Ti K-edge identify this disorder as a function of the La content.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Institute of Geosciences and Exact Sciences São Paulo State University (Unesp)São Carlos Institute of Physics University of São Paulo USPInstitute of Geosciences and Exact Sciences São Paulo State University (Unesp)FAPESP: 2013/12993-4CNPq: 302743/2014-6Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Deltreggia, Lucas Angelini [UNESP]Bernardi, Maria Inês BassoMesquita, Alexandre [UNESP]2018-12-11T16:54:38Z2018-12-11T16:54:38Z2018-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15-18application/pdfhttp://dx.doi.org/10.1016/j.scriptamat.2018.07.018Scripta Materialia, v. 157, p. 15-18.1359-6462http://hdl.handle.net/11449/17126210.1016/j.scriptamat.2018.07.0182-s2.0-850504993472-s2.0-85050499347.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScripta Materialia1,923info:eu-repo/semantics/openAccess2024-01-12T06:23:23Zoai:repositorio.unesp.br:11449/171262Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:44:48.787418Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
title Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
spellingShingle Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
Deltreggia, Lucas Angelini [UNESP]
title_short Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
title_full Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
title_fullStr Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
title_full_unstemmed Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
title_sort Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor
author Deltreggia, Lucas Angelini [UNESP]
author_facet Deltreggia, Lucas Angelini [UNESP]
Bernardi, Maria Inês Basso
Mesquita, Alexandre [UNESP]
author_role author
author2 Bernardi, Maria Inês Basso
Mesquita, Alexandre [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Deltreggia, Lucas Angelini [UNESP]
Bernardi, Maria Inês Basso
Mesquita, Alexandre [UNESP]
description Pr3+-doped perovskite-based SrTiO3 phosphors have been developed as a potential red phosphor. In this paper, we report the substitution of La3+ ions for Sr2+ ions in order to promote Sr vacancies to further enhance photoluminescence. Given that the La content increases, an enhancement in the intensity of all emissions is observed, mainly for 1D2–3H4 and 3P0–3H6 transitions. This enhancement of photoluminescence emissions is associated with disorder in the lattice caused by La incorporation. Raman measurements and X-ray absorption near edge structure (XANES) spectra at the Ti K-edge identify this disorder as a function of the La content.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-11T16:54:38Z
2018-12-11T16:54:38Z
2018-12-01
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.scriptamat.2018.07.018
Scripta Materialia, v. 157, p. 15-18.
1359-6462
http://hdl.handle.net/11449/171262
10.1016/j.scriptamat.2018.07.018
2-s2.0-85050499347
2-s2.0-85050499347.pdf
url http://dx.doi.org/10.1016/j.scriptamat.2018.07.018
http://hdl.handle.net/11449/171262
identifier_str_mv Scripta Materialia, v. 157, p. 15-18.
1359-6462
10.1016/j.scriptamat.2018.07.018
2-s2.0-85050499347
2-s2.0-85050499347.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Scripta Materialia
1,923
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15-18
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
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