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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Optical Characterization of Europium-doped Indium Hydroxide Nanocubes Obtained by Microwave-Assisted Hydrothermal Method

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Author(s):
da Motta, Fabiana Villela [1] ; de Azevedo Marques, Ana Paula [2] ; de Araujo, Vinicius Dantas [1] ; de Souza Tavares, Mara Tatiane [1] ; Bomio Delmonte, Mauricio Roberto [1] ; Paskocimas, Carlos Alberto [1] ; Li, Maximo Siu [3] ; do Nascimento, Rubens Maribondo [1] ; Longo, Elson [1, 4]
Total Authors: 9
Affiliation:
[1] Univ Fed Rio Grande do Norte UFRN, Ctr Tecnol CT, Dept Engn Mat DEMAT, BR-59072970 Natal, RN - Brazil
[2] Univ Fed Sao Paulo UNIFESP, BR-09972270 Diadema, SP - Brazil
[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
[4] Univ Estadual Paulista UNESP, Inst Quim, Lab Interdisciplinar Eletroquim & Ceram, BR-14801907 Araraquara, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 17, n. 4, p. 933-939, Ago. 2014.
Web of Science Citations: 3
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. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC