| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5398461 | Journal of Luminescence | 2016 | 6 Pages |
Abstract
Novel transparent nano-glass-ceramics comprising RE-doped Sr2LuF7 nanocrystals have been obtained by thermal treatment of precursor sol-gel glasses. The precipitated Sr2LuF7 nanocrystals with sizes from 4.5 to 11.5Â nm, confirmed by X-Ray Diffraction and Transmission Electron Microscopy images, show a cubic phase structure. The luminescent features of Eu3+ ions, used as structural probes, evidence the distribution of RE ions into the fluoride nanocrystals. Under 980Â nm laser excitation, intense UV, vis and NIR up-conversion emissions were observed and studied in Yb3+-Tm3+, Yb3+-Er3+ and Yb3+-Ho3+ co-doped nano-glass-ceramics. These results suggest considering these nano-glass-ceramics for potential optical applications as high efficient UV up-conversion materials in UV solid state lasers, infrared tuneable phosphors and photonic integrated devices.
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Authors
A.C. Yanes, J. del-Castillo, D. Luis, J. Puentes,