| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1495432 | Optical Materials | 2012 | 5 Pages |
The Ce3+ and Dy3+ co-doped oxyfluoride glasses and glass ceramics containing CeOF or CeF3 nanocrystals have been prepared in the reducing atmosphere. The crystallinity increased significantly with the Ce3+ concentration, while the crystal size of nanocrystals is mainly influenced by the annealing temperatures. The glasses and glass ceramics emitted white light, deriving from a combination of the Ce3+ blue and the Dy3+ yellow light. The emission intensity and CIE chromaticity coordinates of the Ce3+ and Dy3+ co-doped glasses can be tuned by adjusting the ratio of Ce3+/Dy3+ concentration or the annealing temperature.
► CeOF: Dy3+ nanocrystals are precipitated in fluorosilicate glass ceramics. ► Energy transfers from Ce3+ to Dy3+ more efficiently in CeOF: Dy3+ than in glass. ► The glass ceramics emit white light with CIE coordinates close to (0.3, 0.3). ► The CIE coordinates can be tuned by adjusting the ratio of Ce3+/Dy3+. ► The luminescence can be enhanced largely by annealing processes.
