Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
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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Repositório Institucional da UNESP |
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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/openAccess2024-07-02T15:03:55Zoai:repositorio.unesp.br:11449/179678Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:38:16.519048Repositório 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_ |
1808129098500800512 |