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- W2367799406 abstract "Nanometer Ce~(3+)-doped SiO_2 was prepared by sol-gel method, and it is photoluminescent property was studied. The structure of samples was found to be amorphous with powder size between 20 and 30 nm determined by X-ray diffraction (XRD) and transmission electron microscope (TEM) techniques. The photoluminescence spectrum of the Ce~(3+)-doped SiO_2 annealed at 450 shows a very strong UV luminescence band at 346 nm under 230 nm excitation. A wide band with multipeaks was also observed under the excitation of 380 nm. Compared with the Cu~(2+)-doped and undoped silica a conclusion can be drawn that the UV luminescence band at 346 nm is originated from the natural defect of silica but not the characteristic luminescence of d-f transition of Ce~(3+). Based on the relationship of 346 nm band emission intensity with the heat treatment temperature and the concentration of Ce~(3+) ions in SiO_2, the structure model of the 346 nm band was discussed." @default.
- W2367799406 created "2016-06-24" @default.
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- W2367799406 date "2005-01-01" @default.
- W2367799406 modified "2023-09-25" @default.
- W2367799406 title "Photoluminescence Studies of Nanometer Ce~(3+)-Doped SiO_2 Synthesized by Sol-Gel Method" @default.
- W2367799406 hasPublicationYear "2005" @default.
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