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http://acervodigital.unesp.br/handle/11449/40191
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DC Field | Value | Language |
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dc.contributor.author | Pereira, P. F. S. | - |
dc.contributor.author | de Moura, A. P. | - |
dc.contributor.author | Nogueira, I. C. | - |
dc.contributor.author | Lima, M. V. S. | - |
dc.contributor.author | Longo, Elson | - |
dc.contributor.author | de Sousa Filho, P. C. | - |
dc.contributor.author | Serra, O. A. | - |
dc.contributor.author | Nassar, E. J. | - |
dc.contributor.author | Rosa, I. L. V. | - |
dc.date.accessioned | 2014-05-20T15:30:54Z | - |
dc.date.accessioned | 2016-10-25T18:06:35Z | - |
dc.date.available | 2014-05-20T15:30:54Z | - |
dc.date.available | 2016-10-25T18:06:35Z | - |
dc.date.issued | 2012-06-15 | - |
dc.identifier | http://dx.doi.org/10.1016/j.jallcom.2012.02.083 | - |
dc.identifier.citation | Journal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 526, p. 11-21, 2012. | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | http://hdl.handle.net/11449/40191 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/40191 | - |
dc.description.abstract | In this paper, we investigate the influence of temperature on the structural and luminescent properties of Eu3+-doped strontium tungstate oxide (SrWO4) prepared by the non-hydrolytic sol-gel route. X-ray diffraction (XRD) analyses showed that the SrWO4:Eu scheelite type structure was formed in a unique phase at 900 and 1000 degrees C over 2 h. Raman spectra indicated only one type of [WO4] tetrahedron. The optical properties were investigated by ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements at room and liquid N-2 temperatures. PL study showed D-5(0)-> F-7(2) electric dipole transition is dominant when Eu3+ occupies a non-centrosymmetric environment. The (FEG-SEM) images indicated that an increase in the annealing temperature contributed to the coalescence process which promoted the growth of aggregated particles of a polydisperse nature. A qualitative analysis of the powders obtained by dispersive X-ray detector (EDS) indicated that the samples are composed of Sr, W and O while Eu3+ ion was not observed due to it low concentration. (C) 2012 Elsevier B. V. All rights reserved. | en |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | - |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | - |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. Sa | - |
dc.source | Web of Science | - |
dc.subject | Non-hydrolytic sol-gel | en |
dc.subject | Strontium tungstate | en |
dc.subject | Scheelite | en |
dc.subject | Europium | en |
dc.title | Study of the annealing temperature effect on the structural and luminescent properties of SrWO4:Eu phosphors prepared by a non-hydrolytic sol-gel process | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Federal de São Carlos (UFSCar) | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.contributor.institution | Universidade de São Paulo (USP) | - |
dc.contributor.institution | Univ Franca UNIFRAN | - |
dc.description.affiliation | Universidade Federal de São Carlos (UFSCar), BR-13565905 São Carlos, SP, Brazil | - |
dc.description.affiliation | Univ Estadual Paulista Julio de Mesquita Filho UN, BR-14801907 Araraquara, SP, Brazil | - |
dc.description.affiliation | Univ São Paulo FFCLRP USP, BR-14040901 Ribeirao Preto, SP, Brazil | - |
dc.description.affiliation | Univ Franca UNIFRAN, BR-14404600 Franca, SP, Brazil | - |
dc.description.affiliationUnesp | Univ Estadual Paulista Julio de Mesquita Filho UN, BR-14801907 Araraquara, SP, Brazil | - |
dc.identifier.doi | 10.1016/j.jallcom.2012.02.083 | - |
dc.identifier.wos | WOS:000302770400003 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Journal of Alloys and Compounds | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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