Photoluminescence imaging of Eu(III), Eu(III)/Ag, Eu(III)/Tb(III), and Euallipab(III)/Ag-doped Gd(OH)(3) and Gd2O3 nanorods
- Photoluminescence imaging of Eu(III), Eu(III)/Ag, Eu(III)/Tb(III), and Euallipab(III)/Ag-doped Gd(OH)(3) and Gd2O3 nanorods
- 손영구; 김원주; 곽진석; 강준길[강준길]
- HIGHLY UNIFORM GD(OH)(3); LARGE-SCALE SYNTHESIS; LUMINESCENCE PROPERTIES; HYDROTHERMAL SYNTHESIS; NANOSTRUCTURES; FACILE; NANOPHOSPHORS; NANOPARTICLES; NANOTUBES; PHOSPHOR
- Issue Date
- ELSEVIER SCI LTD
- CERAMICS INTERNATIONAL, v.40, no.8, pp.12035 - 12044
- Eu(III), Eu(III)/Ag, Eu(III)/Tb(III) and Eu(III)/Tb(III)/Ag-doped Gd(OH)(3) and Gd2O3 nanorods were prepared by a hydrothermal method and then examined by scanning electron microscopy, X-ray diffraction analysis, UV-visible absorption and photoluminescence spectroscopy. The synthesized nanorods were commonly found to be 40-50 nm wide and 250-300 nm long. Gd2O3 nanorods with a cubic crystal structure were obtained by thermal annealing of Gd(OH)(3) nanorods with a hexagonal phase. We obtained full 2D and 3D-photoluminescence imaging profiles, and the emissions from Eu(III) and Tb(III) activators were assigned to D-5(0)-> F-7(J) (J=0,1,2,3,4) and D-5(4)-> F-7(J) (J=6,5,4,3) transitions, respectively. In addition to the effects of Ag-doping, a significant change in photoluminescence was observed as the crystal structure was changed by thermal annealing. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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