Preparation and photoluminescence characteristics of In(OH) 3:xTb3+ obtained by Microwave-Assisted Hydrothermal method
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Elsevier
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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 5D4 → 7F6, 5D4 → 7F 5, 5D4 → 7F4, and 5D4 → 7F3 terbium transitions at 495, 550, 590 and 627 nm, respectively. Relative intensities of the Tb 3+ 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. © 2012 Elsevier B.V. All rights reserved.
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Indium hydroxide , Microwave-Assisted Hydrothermal , Terbium , Broadband emission , Diffuse reflectance , Emission spectrums , Hydrothermal methods , Low temperatures , Microwave-assisted , Photoluminescence characteristics , Photoluminescence measurements , Relative intensity , XRD , Emission spectroscopy , Nanostructures , Photoluminescence , Indium
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Inglês
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Journal of Alloys and Compounds, v. 553, p. 338-342.
