Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jlumin.2016.06.033 http://hdl.handle.net/11449/164743 |
Resumo: | In this work, BZT (Ba (ZrxTi1-x)O-3), composite ceramic powder with x=0, 0.25, 0.50, 0.75 and 1 (mol) was prepared by the microwave-assisted hydrothermal method. The structural, morphological and optical properties of the compounds were determined by XRD, SEM, Raman, UV-vis and photo-luminescence analysis. The results showed that the stability of the BZ phase was strongly influenced by the isomorphic Zr/Ti substitution, and that the BZ sample had the greatest structural order for short and long distances compared to the other. The BZT ceramic composite showed optical behavior also influenced by the concentration of Zr, resulting in a growing photoluminescence emission with increasing Zr ion in the network. The BZ sample showed higher photoluminescent intensity in a region including the entire visible spectrum. Although the effect of photoluminescence in these materials is dependent on the presence of defects, which produce excitons for radiative recombination, in the BZ compound, there might have been other effects causing the intense photoluminescence. In this case, high emission is associated with the a charge transfer between neighboring clusters [ZrO6] in a nanoparticle surface interface, which in turn are joined to form BZ mesocrystals on a micrometer scale. The photoluminescence observed in the BZT compound had a predominantly white color, a feature that gives it high potential for applications in white light-emitting devices. (C) 2016 Elsevier B.V. All rights reserved. |
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Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3BZTPhotoluminescenceDefectsCharge transferIn this work, BZT (Ba (ZrxTi1-x)O-3), composite ceramic powder with x=0, 0.25, 0.50, 0.75 and 1 (mol) was prepared by the microwave-assisted hydrothermal method. The structural, morphological and optical properties of the compounds were determined by XRD, SEM, Raman, UV-vis and photo-luminescence analysis. The results showed that the stability of the BZ phase was strongly influenced by the isomorphic Zr/Ti substitution, and that the BZ sample had the greatest structural order for short and long distances compared to the other. The BZT ceramic composite showed optical behavior also influenced by the concentration of Zr, resulting in a growing photoluminescence emission with increasing Zr ion in the network. The BZ sample showed higher photoluminescent intensity in a region including the entire visible spectrum. Although the effect of photoluminescence in these materials is dependent on the presence of defects, which produce excitons for radiative recombination, in the BZ compound, there might have been other effects causing the intense photoluminescence. In this case, high emission is associated with the a charge transfer between neighboring clusters [ZrO6] in a nanoparticle surface interface, which in turn are joined to form BZ mesocrystals on a micrometer scale. The photoluminescence observed in the BZT compound had a predominantly white color, a feature that gives it high potential for applications in white light-emitting devices. (C) 2016 Elsevier B.V. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)INCTMNUniv Estadual Paulista, Fac Ciencias & Tecnol, Presidente Prudente, SP, BrazilUniv Sao Paulo, Inst Fis, Sao Carlos, SP, BrazilUniv Estadual Paulista, Inst Quim, Araraquara, SP, BrazilUniv Estadual Paulista, Fac Ciencias & Tecnol, Presidente Prudente, SP, BrazilUniv Estadual Paulista, Inst Quim, Araraquara, SP, BrazilFAPESP: 2013/07296-2CNPq: 573636/2008-7INCTMN: 2008/57872-1Elsevier B.V.Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Souza, Agda E. [UNESP]Sasaki, Guilherme S. [UNESP]Camacho, Sabrina A. [UNESP]Teixeira, Silvio R. [UNESP]Li, Maximo S.Longo, Elson [UNESP]2018-11-26T17:55:55Z2018-11-26T17:55:55Z2016-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article132-138application/pdfhttp://dx.doi.org/10.1016/j.jlumin.2016.06.033Journal Of Luminescence. Amsterdam: Elsevier Science Bv, v. 179, p. 132-138, 2016.0022-2313http://hdl.handle.net/11449/16474310.1016/j.jlumin.2016.06.033WOS:000384384800019WOS000384384800019.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Luminescence0,694info:eu-repo/semantics/openAccess2023-10-24T06:06:31Zoai:repositorio.unesp.br:11449/164743Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-24T06:06:31Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 |
title |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 |
spellingShingle |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 Souza, Agda E. [UNESP] BZT Photoluminescence Defects Charge transfer |
title_short |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 |
title_full |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 |
title_fullStr |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 |
title_full_unstemmed |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 |
title_sort |
Defects or charge transfer: Different possibilities to explain the photoluminescence in crystalline Ba(ZrxTi1-x)O-3 |
author |
Souza, Agda E. [UNESP] |
author_facet |
Souza, Agda E. [UNESP] Sasaki, Guilherme S. [UNESP] Camacho, Sabrina A. [UNESP] Teixeira, Silvio R. [UNESP] Li, Maximo S. Longo, Elson [UNESP] |
author_role |
author |
author2 |
Sasaki, Guilherme S. [UNESP] Camacho, Sabrina A. [UNESP] Teixeira, Silvio R. [UNESP] Li, Maximo S. Longo, Elson [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Souza, Agda E. [UNESP] Sasaki, Guilherme S. [UNESP] Camacho, Sabrina A. [UNESP] Teixeira, Silvio R. [UNESP] Li, Maximo S. Longo, Elson [UNESP] |
dc.subject.por.fl_str_mv |
BZT Photoluminescence Defects Charge transfer |
topic |
BZT Photoluminescence Defects Charge transfer |
description |
In this work, BZT (Ba (ZrxTi1-x)O-3), composite ceramic powder with x=0, 0.25, 0.50, 0.75 and 1 (mol) was prepared by the microwave-assisted hydrothermal method. The structural, morphological and optical properties of the compounds were determined by XRD, SEM, Raman, UV-vis and photo-luminescence analysis. The results showed that the stability of the BZ phase was strongly influenced by the isomorphic Zr/Ti substitution, and that the BZ sample had the greatest structural order for short and long distances compared to the other. The BZT ceramic composite showed optical behavior also influenced by the concentration of Zr, resulting in a growing photoluminescence emission with increasing Zr ion in the network. The BZ sample showed higher photoluminescent intensity in a region including the entire visible spectrum. Although the effect of photoluminescence in these materials is dependent on the presence of defects, which produce excitons for radiative recombination, in the BZ compound, there might have been other effects causing the intense photoluminescence. In this case, high emission is associated with the a charge transfer between neighboring clusters [ZrO6] in a nanoparticle surface interface, which in turn are joined to form BZ mesocrystals on a micrometer scale. The photoluminescence observed in the BZT compound had a predominantly white color, a feature that gives it high potential for applications in white light-emitting devices. (C) 2016 Elsevier B.V. All rights reserved. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-11-01 2018-11-26T17:55:55Z 2018-11-26T17:55:55Z |
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.jlumin.2016.06.033 Journal Of Luminescence. Amsterdam: Elsevier Science Bv, v. 179, p. 132-138, 2016. 0022-2313 http://hdl.handle.net/11449/164743 10.1016/j.jlumin.2016.06.033 WOS:000384384800019 WOS000384384800019.pdf |
url |
http://dx.doi.org/10.1016/j.jlumin.2016.06.033 http://hdl.handle.net/11449/164743 |
identifier_str_mv |
Journal Of Luminescence. Amsterdam: Elsevier Science Bv, v. 179, p. 132-138, 2016. 0022-2313 10.1016/j.jlumin.2016.06.033 WOS:000384384800019 WOS000384384800019.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Luminescence 0,694 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
132-138 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1797789493609103360 |