| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1495197 | Optical Materials | 2013 | 4 Pages |
Abstract
Mono-doped Ce:LYSO (Lu1.80Y0.2SiO5:Ce) and co-doped Ca,Ce:LYSO and Mg,Ce:LYSO single crystals were prepared by the Czochralski technique. Effects of the X-ray irradiation on the emission spectra and on the light yield are reported. A decrease of the longest wavelength emission (at about 500Â nm) and a light yield increase are observed after 1Â h under X-ray irradiation. As electron paramagnetic resonance (EPR) evidenced no change in the two cerium sites occupancy along with the irradiation time a mechanism based on the evolution of the oxygen vacancies as neighbors of Ce3+ ions is proposed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Samuel Blahuta, Aurélie Bessière, Didier Gourier, Vladimir Ouspenski, Bruno Viana,