| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5402656 | Journal of Luminescence | 2009 | 4 Pages |
Abstract
The spectral and kinetic parameters of M1âxCexF2+x (x=0.35, M=Ca, Sr, Ba) crystals luminescence have been studied. These characteristics are compared to the luminescence of solution base hosts: MF2:Ce and CeF3. The emission bands of heavily Ce-doped alkali earth fluorides are closed to the spectrum of perturbed Ce-center in CeF3 at T=9Â K. Luminescence of M0.65Ce0.35F2.35 crystals reveals the efficient excitation in the UV and VUV ranges. The main feature of the emission and excitation spectra of Ce3+ luminescence is the displacement to the low-energy range according to the bandgap decrease in the Ca-, Sr- and Ba-based fluorides, respectively. Small Stokes shift leads to the reabsorption and light yield decrease. Luminescence peculiarities of M1âxCexF2+x solid solution and the role of Ce-enriched inclusions are discussed.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
A. Gektin, N. Shiran, V. Nesterkina, Y. Boyarintseva, V. Baumer, G. Stryganyuk, K. Shimamura, E. Villora,