| Zugriffsnummer | 19849 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Pressure-induced luminescence from broad-band to narrow-line emission in Cr3+-doped LiCaAlF6 at room temperature |
| Autor(in); Institution |
Sanz-Ortiz, M. N.; DCITIMAC, Universidad de Cantabria, Facultad de Ciencias, Santander, SPAIN
Rodríguez, F.; DCITIMAC, Universidad de Cantabria, Facultad de Ciencias, Santander, SPAIN
Hern.aacute.ndez, I.; DCITIMAC, Universidad de Cantabria, Facultad de Ciencias, Santander, SPAIN
Valiente, R.; Universidad de Cantabria, Facultad de Ciencias, Dpto. Física Aplicada, Santander, SPAIN
Kück, Stefan; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
|
| Quelle/Jahr | High Pressure Research: 26 (2006), 4, 345 - 348 |
| ISSN | 0895-7959 |
| DOI | |
| Verlag | London: Taylor & Francis |
| Freie Schlagworte | Spectroscopy ; High pressure ; Photoluminescence ; Cr3+ ; Excited-state crossover |
| Zusammenfassung | This work investigates pressure-induced excited-state-crossover phenomena in Cr3+-doped LiCaAlF6 at room temperature. The aim is to find the structural requirements yielding the change in the Cr3+ photoluminescence (PL) behaviour from a single broadband emission, which is located at 1.62 eV (765 nm) at ambient conditions, to a ruby-like narrow-line emission at 1.87 eV (662 nm). For this purpose, emission and excitation spectroscopy as well as lifetime measurements as a function of pressure were performed in the 0–35 GPa range. Interestingly, we have been able to transform the broadband Cr3+ PL at ambient pressure into a ruby-like emission at 28 GPa. This behaviour, together with the variations of the 2E and 4T2 excited-state energies, and the PL lifetime with pressure, can be explained on the basis of the electron–ion coupling associated with the 4T2 and 2E states. |
Zitierung
Sanz-Ortiz, M. N., Rodríguez, F., Hern.aacute.ndez, I., Valiente, R., & Kück, S. (2006). Pressure-induced luminescence from broad-band to narrow-line emission in Cr³⁺-doped LiCaAlF₆ at room temperature. High Pressure Research, 26(4), 345–348. https://doi.org/10.1080/08957950601104237