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

Author(s)

Fabiana Villela da Motta ^[1] ; Ana Paula de Azevedo Marques ^[2] ; Vinícius Dantas de Araújo ^[3] ; Mara Tatiane de Souza Tavares ^[4] ; Mauricio Roberto Bomio Delmonte ^[5] ; Carlos Alberto Paskocimas ^[6] ; Máximo Siu Li ^[7] ; Rubens Maribondo do Nascimento ^[8] ; Elson Longo ^[9]

Affiliation

^[1] Universidade Federal do Rio Grande do Norte. Centro de Tecnologia. Departamento de Engenharia de Materiais - Brasil

^[2] Universidade Federal de São Paulo - Brasil

^[3] Universidade Federal do Rio Grande do Norte. Centro de Tecnologia. Departamento de Engenharia de Materiais - Brasil

^[4] Universidade Federal do Rio Grande do Norte. Centro de Tecnologia. Departamento de Engenharia de Materiais - Brasil

^[5] Universidade Federal do Rio Grande do Norte. Centro de Tecnologia. Departamento de Engenharia de Materiais - Brasil

^[6] Universidade Federal do Rio Grande do Norte. Centro de Tecnologia. Departamento de Engenharia de Materiais - Brasil

^[7] Universidade de São Paulo. Instituto de Física de São Carlos - Brasil

^[8] Universidade Federal do Rio Grande do Norte. Centro de Tecnologia. Departamento de Engenharia de Materiais - Brasil

^[9] Universidade Estadual Paulista. Instituto de Química. Laboratório Interdisciplinar de Eletroquímica e Cerâmica - Brasil

• Document type: Journal article
• Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 17, n. 4, p. 933-939, 2014-06-13.

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 Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC