| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7905880 | Optical Materials | 2018 | 7 Pages |
Abstract
We report on the synthesis and comprehensive characterization of Ce3+ doped LiLa9(SiO4)6O2 (LLSO) crystals, grown using the slow cooling flux method. The luminescence and optical spectroscopic properties and luminescence decay kinetics were studied upon excitation with UV, VUV, X-ray photons and cathode rays. Two impurity Ce3+ centres substituting for La3+- ions in two nonequivalent crystal positions are observed in LLSO:Ce3+. They are well distinguished spectroscopically in the UV range both in emission and excitation spectra. Apart from emission associated with Ce3+ 5â¯dâ4f interconfigurational transitions, a low-temperature defect-related emission has been observed upon UV-VUV and higher energy X-ray excitation. Processes lying behind the temperature quenching and host-to-impurity energy transfer are analyzed and discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Vladimir A. Pustovarov, Konstantin V. Ivanovskikh, Qiufeng Shi, Yan Huang, Marco Bettinelli,