Photoluminescent behavior of BaWO4 powders processed in microwave-hydrothermal
dc.contributor.author | Cavalcante, L. S. | |
dc.contributor.author | Sczancoski, J. C. | |
dc.contributor.author | Espinosa, J. W. M. | |
dc.contributor.author | Varela, José Arana [UNESP] | |
dc.contributor.author | Pizani, P. S. | |
dc.contributor.author | Longo, Elson [UNESP] | |
dc.contributor.institution | Universidade Federal de São Carlos (UFSCar) | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T15:32:14Z | |
dc.date.available | 2014-05-20T15:32:14Z | |
dc.date.issued | 2009-04-17 | |
dc.description.abstract | Photoluminescence (PL) at room temperature was observed in BaWO4 powders processed in microwave-hydrothermal at 140 degrees C for different times. The phases were characterized by X-ray diffraction (XRD) and Fourier transform Raman (FT-Raman) measurements. XRD and FT-Raman analyses revealed that the BaWO4 powders present a tetragonal structure and free of deleterious phases. Ultraviolet-visible absorption spectroscopy was employed to determine the optical band gap of this material. PL measurements at room temperature showed a maximum emission at around 543 nm (green emission) when excited with 488 nm wavelength. PL behavior was attributed to the existence of distortions on the [WO4] tetrahedron groups caused by microwave radiation. (C) 2008 Elsevier B.V. All rights reserved. | en |
dc.description.affiliation | Universidade Federal de São Carlos (UFSCar), LIEC, Dept Quim & Fis, BR-13565905 São Carlos, SP, Brazil | |
dc.description.affiliation | Univ Estadual Paulista, IQ, BR-14801907 Araraquara, SP, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista, IQ, BR-14801907 Araraquara, SP, Brazil | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.description.sponsorship | FAPESR | |
dc.format.extent | 195-200 | |
dc.identifier | http://dx.doi.org/10.1016/j.jallcom.2008.06.049 | |
dc.identifier.citation | Journal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 474, n. 1-2, p. 195-200, 2009. | |
dc.identifier.doi | 10.1016/j.jallcom.2008.06.049 | |
dc.identifier.issn | 0925-8388 | |
dc.identifier.uri | http://hdl.handle.net/11449/41190 | |
dc.identifier.wos | WOS:000266952000042 | |
dc.language.iso | eng | |
dc.publisher | Elsevier B.V. Sa | |
dc.relation.ispartof | Journal of Alloys and Compounds | |
dc.relation.ispartofjcr | 3.779 | |
dc.relation.ispartofsjr | 1,020 | |
dc.rights.accessRights | Acesso restrito | pt |
dc.source | Web of Science | |
dc.subject | Optical materials | en |
dc.subject | Precipitation | en |
dc.subject | Crystal structure | en |
dc.subject | Optical properties | en |
dc.subject | Luminescence | en |
dc.title | Photoluminescent behavior of BaWO4 powders processed in microwave-hydrothermal | en |
dc.type | Artigo | pt |
dcterms.license | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
dcterms.rightsHolder | Elsevier B.V. Sa | |
dspace.entity.type | Publication | |
relation.isOrgUnitOfPublication | bc74a1ce-4c4c-4dad-8378-83962d76c4fd | |
relation.isOrgUnitOfPublication.latestForDiscovery | bc74a1ce-4c4c-4dad-8378-83962d76c4fd | |
unesp.campus | Universidade Estadual Paulista (UNESP), Instituto de Química, Araraquara | pt |
unesp.department | Bioquímica e Tecnologia - IQAR | pt |
unesp.department | Físico-Química - IQAR | pt |
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