Optical characterization of europium-doped indium hydroxide nanocubes obtained by Microwave-Assisted Hydrothermal method

Optical characterization of europium-doped indium hydroxide nanocubes obtained by Microwave-Assisted Hydrothermal method

Author Motta, Fabiana Villela da Google Scholar
Marques, Ana Paula de Azevedo Autor UNIFESP Google Scholar
Araújo, Vinícius Dantas de Google Scholar
Tavares, Mara Tatiane de Souza Google Scholar
Delmonte, Mauricio Roberto Bomio Google Scholar
Paskocimas, Carlos Alberto Google Scholar
Li, Máximo Siu Google Scholar
Nascimento, Rubens Maribondo do Google Scholar
Longo, Elson Google Scholar
Institution Universidade Federal do Rio Grande do Norte Centro de Tecnologia Departamento de Engenharia de Materiais
Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Universidade Estadual Paulista (UNESP)
Abstract Crystalline europium-doped indium hydroxide (In(OH)3:Eu) nanostructures were prepared by rapid and efficient Microwave-Assisted Hydrothermal (MAH) method. Nanostructures were obtained at 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 europium-doped indium hydroxide (IH:xEu) samples under excitation (350.7 nm) presented broad band emission regarding the indium hydroxide (IH) matrix and 5D0 → 7F0, 5D0 → 7F1, 5D0 → 7F2, 5D0 → 7F3 and 5D0 → 7F4 europium transitions at 582, 596, 618, 653 and 701 nm, respectively. Relative intensities of Eu3+ emissions increased as the concentration of this ion increased from 0, 1, 2, 4 and 8 mol %, of Eu3+, but the luminescence is drastically quenched for the IH matrix.
Keywords indium hydroxide
europium
Microwave-Assisted Hydrothermal
nanostructures
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Grant number FAPESP: 2013/07296-2
Date 2014-08-01
Published in Materials Research. ABM, ABC, ABPol, v. 17, n. 4, p. 933-939, 2014.
ISSN 1516-1439 (Sherpa/Romeo, impact factor)
Publisher ABM, ABC, ABPol
Extent 933-939
Origin http://dx.doi.org/10.1590/S1516-14392014005000084
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000342348700017
SciELO ID S1516-14392014000400017 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/8522

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