| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7224825 | Optik - International Journal for Light and Electron Optics | 2018 | 5 Pages |
Abstract
Eu3+-activated Y2O3 phosphors doped with M (MÂ =Â Gd3+, La3+, Zn2+, Li+) were synthesized via a low temperature hydrothermal method with subsequent heat treatment. The photoluminescent properties of Eu3+-activated Y2O3 with different M ions under 147Â nm excitation were examined. The excitation spectra of all samples consisted of two bands with maxima at about 207Â nm and 239Â nm. The former band was ascribed to the band edge of Y2O3, and the latter band was assigned to the charge transfer transition between Eu3+ and O2â. At the same doping concentration, Gd3+ or Li+ doping had a positive effect on the luminescence of Y2O3:Eu3+, while La3+ or Zn2+ doping had a negative effect. The mechanism and role of different M ions were discussed.
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Authors
Lei Zhao, Deyin Wang, Dandan Meng, Wenbo Chen,