Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics

Detalhes bibliográficos
Autor(a) principal: Orrego, S. [UNESP]
Data de Publicação: 2018
Outros Autores: Cortés, J. A. [UNESP], Amoresi, R. A.C. [UNESP], Simões, A. Z. [UNESP], Ramírez, M. A. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.ceramint.2018.03.116
http://hdl.handle.net/11449/179678
Resumo: Sr2+ modified CaSrxCu3-xTi4O12 ceramic powders with x = ranging from 0.00 to 3.00 were prepared by solid-state reaction. The effects of Sr2+ CCTO powders were evaluated by X-ray diffraction (XRD) with Rietveld refinement revealing a mixture of multiple phases. The Raman spectroscopy analysis pointed out that Sr2+ addition produces an emission in the blue region, associated to TiO6 clusters. Optical properties by means of PL analysis showed emission near to blue region for the samples with x = 0.00, x = 0.15, x = 0.30, corresponding to oxygen vacancies. The emission in the violet region is associated to deep defects while emission in the other samples is linked to shallow defects typical of disordered crystalline structures. Less prominent emission in the green region with the increase of Sr2+ corresponds to less self-trapped charges, less interaction between electron and hole, and donor–acceptor recombination.
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spelling Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramicsCaCu3Ti4O12Photoluminescent behaviorSolid-state reactionSr2+ modified CaSrxCu3-xTi4O12 ceramic powders with x = ranging from 0.00 to 3.00 were prepared by solid-state reaction. The effects of Sr2+ CCTO powders were evaluated by X-ray diffraction (XRD) with Rietveld refinement revealing a mixture of multiple phases. The Raman spectroscopy analysis pointed out that Sr2+ addition produces an emission in the blue region, associated to TiO6 clusters. Optical properties by means of PL analysis showed emission near to blue region for the samples with x = 0.00, x = 0.15, x = 0.30, corresponding to oxygen vacancies. The emission in the violet region is associated to deep defects while emission in the other samples is linked to shallow defects typical of disordered crystalline structures. Less prominent emission in the green region with the increase of Sr2+ corresponds to less self-trapped charges, less interaction between electron and hole, and donor–acceptor recombination.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)São Paulo State University – UNESP Faculty of Engineering of Guaratinguetá, Ariberto Pereira da Cunha 333, Portal das ColinasSão Paulo State University – UNESP – Chemistry Institute, Rua Prof. Francisco Degni, 55, QuitandinhaSão Paulo State University – UNESP Faculty of Engineering of Guaratinguetá, Ariberto Pereira da Cunha 333, Portal das ColinasSão Paulo State University – UNESP – Chemistry Institute, Rua Prof. Francisco Degni, 55, QuitandinhaFAPESP: CEPID/CDMF – FAPESP: 2013/07296-2Universidade Estadual Paulista (Unesp)Orrego, S. [UNESP]Cortés, J. A. [UNESP]Amoresi, R. A.C. [UNESP]Simões, A. Z. [UNESP]Ramírez, M. A. [UNESP]2018-12-11T17:36:19Z2018-12-11T17:36:19Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.ceramint.2018.03.116Ceramics International.0272-8842http://hdl.handle.net/11449/17967810.1016/j.ceramint.2018.03.1162-s2.0-850439835922-s2.0-85043983592.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCeramics International0,784info:eu-repo/semantics/openAccess2023-12-06T06:19:00Zoai:repositorio.unesp.br:11449/179678Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-06T06:19Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
title Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
spellingShingle Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
Orrego, S. [UNESP]
CaCu3Ti4O12
Photoluminescent behavior
Solid-state reaction
title_short Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
title_full Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
title_fullStr Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
title_full_unstemmed Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
title_sort Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
author Orrego, S. [UNESP]
author_facet Orrego, S. [UNESP]
Cortés, J. A. [UNESP]
Amoresi, R. A.C. [UNESP]
Simões, A. Z. [UNESP]
Ramírez, M. A. [UNESP]
author_role author
author2 Cortés, J. A. [UNESP]
Amoresi, R. A.C. [UNESP]
Simões, A. Z. [UNESP]
Ramírez, M. A. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Orrego, S. [UNESP]
Cortés, J. A. [UNESP]
Amoresi, R. A.C. [UNESP]
Simões, A. Z. [UNESP]
Ramírez, M. A. [UNESP]
dc.subject.por.fl_str_mv CaCu3Ti4O12
Photoluminescent behavior
Solid-state reaction
topic CaCu3Ti4O12
Photoluminescent behavior
Solid-state reaction
description Sr2+ modified CaSrxCu3-xTi4O12 ceramic powders with x = ranging from 0.00 to 3.00 were prepared by solid-state reaction. The effects of Sr2+ CCTO powders were evaluated by X-ray diffraction (XRD) with Rietveld refinement revealing a mixture of multiple phases. The Raman spectroscopy analysis pointed out that Sr2+ addition produces an emission in the blue region, associated to TiO6 clusters. Optical properties by means of PL analysis showed emission near to blue region for the samples with x = 0.00, x = 0.15, x = 0.30, corresponding to oxygen vacancies. The emission in the violet region is associated to deep defects while emission in the other samples is linked to shallow defects typical of disordered crystalline structures. Less prominent emission in the green region with the increase of Sr2+ corresponds to less self-trapped charges, less interaction between electron and hole, and donor–acceptor recombination.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-11T17:36:19Z
2018-12-11T17:36:19Z
2018-01-01
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.ceramint.2018.03.116
Ceramics International.
0272-8842
http://hdl.handle.net/11449/179678
10.1016/j.ceramint.2018.03.116
2-s2.0-85043983592
2-s2.0-85043983592.pdf
url http://dx.doi.org/10.1016/j.ceramint.2018.03.116
http://hdl.handle.net/11449/179678
identifier_str_mv Ceramics International.
0272-8842
10.1016/j.ceramint.2018.03.116
2-s2.0-85043983592
2-s2.0-85043983592.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ceramics International
0,784
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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_ 1799965193734717440

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