Excitonic processes in Li- and Na-DOPED CaF2

Authors
Denks, V Maaroos, A Nagirnyi, V Savikhina, T Vassiltsenko, V
Citation
V. Denks et al., Excitonic processes in Li- and Na-DOPED CaF2, RADIAT EFF, 149(1-4), 1999, pp. 297-301
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
RADIATION EFFECTS AND DEFECTS IN SOLIDS
ISSN journal
10420150 → ACNP
Volume
149
Issue
1-4
Year of publication
1999
Pages
297 - 301
Database
ISI
SICI code
1042-0150(1999)149:1-4<297:EPILAN>2.0.ZU;2-I
Abstract
The optical properties of nominally pure CaF2 crystals as well as those of pure and Li+ and Na+-doped CaF2 powders are compared. The emission band pea king at 3.85 eV and the excitation band in the region of 10-10.6 eV, observ ed in CaF2 : Li and CaF2 : Na powders, are ascribed to the radiative decay of a self-trapped exciton perturbed by an anion vacancy.