Optical characterization of europium-doped indium hydroxide nanocubes obtained by Microwave-Assisted Hydrothermal method
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Data
2014-08-01
Autores
Motta, Fabiana Villela Da
Marques, Ana Paula De Azevedo
Araújo, Vinícius Dantas De
Tavares, Mara Tatiane De Souza
Delmonte, Mauricio Roberto Bomio
Paskocimas, Carlos Alberto
Li, Máximo Siu
Nascimento, Rubens Maribondo Do
Longo, Elson [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
ABM, ABC, ABPol
Resumo
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.
Descrição
Palavras-chave
Indium hydroxide, Europium, Microwave-Assisted Hydrothermal, Nanostructures
Como citar
Materials Research. ABM, ABC, ABPol, v. 17, n. 4, p. 933-939, 2014.