| Автор | A Bessière |
| Автор | P Dorenbos |
| Автор | C W E van Eijk |
| Автор | L Pidol |
| Автор | K W Krämer |
| Автор | H U Güdel |
| Дата выпуска | 2004-03-17 |
| dc.description | A 10 ns fast luminescence was observed at 270 nm in Cs<sub>2</sub>LiY Cl<sub>6</sub>:Ce<sup>3+</sup> in addition to the 5d<sub>t</sub>–4f Ce<sup>3+</sup> doublet emission at 370 and 405 nm. This anomalous luminescence occurs exclusively for an excitation of the 4f–5d<sub>e</sub> transitions of Ce<sup>3+</sup> around 210 nm. It is not excited under across band gap excitation which makes it an uncommon phenomenon. The emission shows a large Stokes shift of 1.2 eV that must be related to an excited state with a very strong electron–lattice interaction or possible involvement of conduction band states. The 270 nm emission undergoes thermal quenching between 140 and 250 K while the 5d<sub>t</sub>–4f Ce<sup>3+</sup> emission gains intensity. The shape of the decay time spectra of the 5d<sub>t</sub>–4f Ce<sup>3+</sup> emission reflects a temperature activated transfer from the anomalous state to the 5d<sub>t</sub> lowest Ce<sup>3+</sup> level. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | IOP Publishing Ltd |
| Название | Spectroscopy and anomalous emission of Ce doped elpasolite Cs<sub>2</sub>LiY Cl<sub>6</sub> |
| Тип | paper |
| DOI | 10.1088/0953-8984/16/10/019 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 16 |
| Первая страница | 1887 |
| Последняя страница | 1897 |
| Выпуск | 10 |
