Photoluminescent behavior of BaWO4 powders processed in microwave-hydrothermal
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
20/05/2014
20/05/2014
17/04/2009
|
| Resumo |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 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. |
| Formato |
195-200 |
| Identificador |
http://dx.doi.org/10.1016/j.jallcom.2008.06.049 Journal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 474, n. 1-2, p. 195-200, 2009. 0925-8388 http://hdl.handle.net/11449/41190 10.1016/j.jallcom.2008.06.049 WOS:000266952000042 |
| Idioma(s) |
eng |
| Publicador |
Elsevier B.V. Sa |
| Relação |
Journal of Alloys and Compounds |
| Direitos |
closedAccess |
| Palavras-Chave | #Optical materials #Precipitation #Crystal structure #Optical properties #Luminescence |
| Tipo |
info:eu-repo/semantics/article |
