Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1527177 | Materials Chemistry and Physics | 2008 | 5 Pages |
Abstract
Vycor glasses impregnated with Tb3+ and Ce3+(or Gd3+) were prepared as vacuum ultraviolet (VUV) and ultraviolet (UV) luminescent materials by adsorption of rare-earth ions into a special porous Vycor glass followed by reduction sintering in a CO atmosphere. In the presence of Ce3+(or Gd3+), the Tb3+ emissions under VUV and UV excitation were significantly enhanced owing to energy transfer from Ce3+(or Gd3+) to Tb3+. Furthermore, it was found that the intensity of Tb3+ emissions depended on the solution concentration of Ce3+(or Gd3+) ions under the excitation at 160Â nm but not at 231Â nm. The reason may be due to the direct and indirect excitation of Tb3+ under UV and VUV lights, respectively.
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Authors
Wei Liu, Danping Chen, Tomoko Akai,