Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals

Detalhes bibliográficos
Autor(a) principal: Rocha, Poliana Lima
Data de Publicação: 2016
Outros Autores: Batista Barbosa, Diego Augusto, de Oliveira Lima, José Renato, Piedade Prazeres, Gilza Maria, de Araujo Paschoal, Carlos William, Li, Maximo Siu, Longo, Elson [UNESP], Maciel, Adeilton Pereira, Almeida, Marcio Aurélio Pinheiro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.matlet.2016.08.041
http://hdl.handle.net/11449/178323
Resumo: Bi2WO6 (BWO) powders synthesized via hydrothermal processes were studied in order to determine the effect of structure on photoluminescence (PL). BWO samples were characterized using X-Ray Powder Diffraction, UV–vis diffuse reflectance, field emission scanning electron microscopy, and PL intensity measurements. Orthorhombic structures were observed in all samples. A change in crystal microstructure and optical band gap was observed. The PL intensity obtained with different samples varied, with the highest intensity obtained with BWO fabricated with polyvinylpyrrolidone (PVP). Using Raman spectroscopy, a change in the microcrystal symmetry from P21ab to B2cb was observed and found to be responsible for the increase in photoluminescence.
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spelling Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystalsBismuth tungstatePhotoluminescenceStructural changeBi2WO6 (BWO) powders synthesized via hydrothermal processes were studied in order to determine the effect of structure on photoluminescence (PL). BWO samples were characterized using X-Ray Powder Diffraction, UV–vis diffuse reflectance, field emission scanning electron microscopy, and PL intensity measurements. Orthorhombic structures were observed in all samples. A change in crystal microstructure and optical band gap was observed. The PL intensity obtained with different samples varied, with the highest intensity obtained with BWO fabricated with polyvinylpyrrolidone (PVP). Using Raman spectroscopy, a change in the microcrystal symmetry from P21ab to B2cb was observed and found to be responsible for the increase in photoluminescence.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do MaranhãoFundação Cearense de Apoio ao Desenvolvimento Científico e TecnológicoCoordenação de Ciência de Tecnologia Universidade Federal do Maranhão Campus do BacangaDepartamento de Física Universidade Federal do Maranhão Campus do BacangaDepartamento de Química Universidade Federal do Maranhão Campus do BacangaDepartamento de Física Universidade Federal do Ceará Campus do PiciInstituto de Física de São Carlos-Universidade de São PauloInstituto de Química UNESP−Universidade Estadual PaulistaInstituto de Química UNESP−Universidade Estadual PaulistaFundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão: INFRA-03965/15Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão: UNIVERSAL-00563/15Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão: UNIVERSAL-00656/15Universidade Federal do MaranhãoUniversidade Federal do CearáUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Rocha, Poliana LimaBatista Barbosa, Diego Augustode Oliveira Lima, José RenatoPiedade Prazeres, Gilza Mariade Araujo Paschoal, Carlos WilliamLi, Maximo SiuLongo, Elson [UNESP]Maciel, Adeilton PereiraAlmeida, Marcio Aurélio Pinheiro2018-12-11T17:29:47Z2018-12-11T17:29:47Z2016-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article298-300application/pdfhttp://dx.doi.org/10.1016/j.matlet.2016.08.041Materials Letters, v. 184, p. 298-300.1873-49790167-577Xhttp://hdl.handle.net/11449/17832310.1016/j.matlet.2016.08.0412-s2.0-849900575882-s2.0-84990057588.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Lettersinfo:eu-repo/semantics/openAccess2023-11-18T06:12:52Zoai:repositorio.unesp.br:11449/178323Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-18T06:12:52Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
title Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
spellingShingle Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
Rocha, Poliana Lima
Bismuth tungstate
Photoluminescence
Structural change
title_short Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
title_full Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
title_fullStr Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
title_full_unstemmed Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
title_sort Enhancement of symmetry-induced photoluminescence in bismuth tungstate microcrystals
author Rocha, Poliana Lima
author_facet Rocha, Poliana Lima
Batista Barbosa, Diego Augusto
de Oliveira Lima, José Renato
Piedade Prazeres, Gilza Maria
de Araujo Paschoal, Carlos William
Li, Maximo Siu
Longo, Elson [UNESP]
Maciel, Adeilton Pereira
Almeida, Marcio Aurélio Pinheiro
author_role author
author2 Batista Barbosa, Diego Augusto
de Oliveira Lima, José Renato
Piedade Prazeres, Gilza Maria
de Araujo Paschoal, Carlos William
Li, Maximo Siu
Longo, Elson [UNESP]
Maciel, Adeilton Pereira
Almeida, Marcio Aurélio Pinheiro
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal do Maranhão
Universidade Federal do Ceará
Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Rocha, Poliana Lima
Batista Barbosa, Diego Augusto
de Oliveira Lima, José Renato
Piedade Prazeres, Gilza Maria
de Araujo Paschoal, Carlos William
Li, Maximo Siu
Longo, Elson [UNESP]
Maciel, Adeilton Pereira
Almeida, Marcio Aurélio Pinheiro
dc.subject.por.fl_str_mv Bismuth tungstate
Photoluminescence
Structural change
topic Bismuth tungstate
Photoluminescence
Structural change
description Bi2WO6 (BWO) powders synthesized via hydrothermal processes were studied in order to determine the effect of structure on photoluminescence (PL). BWO samples were characterized using X-Ray Powder Diffraction, UV–vis diffuse reflectance, field emission scanning electron microscopy, and PL intensity measurements. Orthorhombic structures were observed in all samples. A change in crystal microstructure and optical band gap was observed. The PL intensity obtained with different samples varied, with the highest intensity obtained with BWO fabricated with polyvinylpyrrolidone (PVP). Using Raman spectroscopy, a change in the microcrystal symmetry from P21ab to B2cb was observed and found to be responsible for the increase in photoluminescence.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-01
2018-12-11T17:29:47Z
2018-12-11T17:29:47Z
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.matlet.2016.08.041
Materials Letters, v. 184, p. 298-300.
1873-4979
0167-577X
http://hdl.handle.net/11449/178323
10.1016/j.matlet.2016.08.041
2-s2.0-84990057588
2-s2.0-84990057588.pdf
url http://dx.doi.org/10.1016/j.matlet.2016.08.041
http://hdl.handle.net/11449/178323
identifier_str_mv Materials Letters, v. 184, p. 298-300.
1873-4979
0167-577X
10.1016/j.matlet.2016.08.041
2-s2.0-84990057588
2-s2.0-84990057588.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Letters
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 298-300
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_ 1797789743673507840

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