Preparation and photoluminescence characteristics of In(OH)(3):xTb(3+) obtained by Microwave-Assisted Hydrothermal method

Preparation and photoluminescence characteristics of In(OH)(3):xTb(3+) obtained by Microwave-Assisted Hydrothermal method

Autor Motta, F. V. Google Scholar
Marques, A. P. A. Autor UNIFESP Google Scholar
Li, M. S. Google Scholar
Abreu, M. F. C. Google Scholar
Paskocimas, C. A. Google Scholar
Bomio, M. R. D. Google Scholar
Souza, R. P. Google Scholar
Varela, J. A. Google Scholar
Longo, E. Google Scholar
Instituição Univ Fed Rio Grande do Norte
Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Universidade Federal de São Carlos (UFSCar)
UNESP
Resumo Crystalline terbium-doped indium hydroxide structures were prepared by a rapid and efficient Microwave-Assisted Hydrothermal (MAH) method. Nanostructures were obtained at a low temperature. FE-SEM images confirm that these samples are composed of 3D nanostructures. XRD, optical diffuse reflectance and photoluminescence (PL) measurements were used to characterize the products. Emission spectra of terbium-doped indium hydroxide (In(OH)(3):xTb(3+)) samples under excitation (350.7 nm) presented broad band emission referent to the indium hydroxide matrix and D-5(4)-> F-7(6), D-5(4)-> F-7(5), D-5(4)-> F-7(4), and D-5(4)-> F-7(3) terbium transitions at 495, 550, 590 and 627 nm, respectively. Relative intensities of the Tb3+ emissions increased as the concentration of this ion increased from 0, 1, 2, 4 and 8 mol%, of Tb3+, but the luminescence is drastically quenched for the In(OH) 3 matrix. (C) 2012 Elsevier B.V. All rights reserved.
Palavra-chave Indium hydroxide
Terbium
Microwave-Assisted Hydrothermal
Idioma Inglês
Financiador Brazilian research financing institution: RECAM (Rede de Catalisadores Ambientais)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Número do financiamento FAPESP: 98/14324-8
Data de publicação 2013-03-15
Publicado em Journal of Alloys and Compounds. Lausanne: Elsevier Science Sa, v. 553, p. 338-342, 2013.
ISSN 0925-8388 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 338-342
Fonte http://dx.doi.org/10.1016/j.jallcom.2012.11.063
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000314640600058
Endereço permanente http://repositorio.unifesp.br/handle/11600/36088

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