Near-infrared luminescence in TlCl:Bi crystal
Abstract
Experimental and theoretical studies of spectral properties of crystalline TlCl:Bi are performed. Two broad near-infrared luminescence bands with a lifetime about 0.25 ms are observed: a strong band near 1.18 mkm excited by 0.40, 0.45, 0.70 and 0.80 mkm radiation, and a weak band at > 1.5 mkm excited by 0.40 and 0.45 mkm radiation. Computer modeling of Bi-related centers in TlCl lattice suggests that Bi^+__V^-(Cl) center (Bi^+ in Tl site and a negatively charged Cl vacancy in the nearest anion site) is most likely responsible for the IR luminescence.
- Publication:
-
Optics Letters
- Pub Date:
- February 2013
- DOI:
- 10.1364/OL.38.000362
- arXiv:
- arXiv:1302.0474
- Bibcode:
- 2013OptL...38..362P
- Keywords:
-
- Physics - Optics;
- Condensed Matter - Materials Science
- E-Print:
- 5 pages, 3 figures