MULTIPLICATION OF ANION AND CATION ELECTRONIC EXCITATIONS IN WIDE-GAPKCL AND CSCL CRYSTALS

Authors
KIRM M MARTINSON I LUSHCHIK A KALDER K KINK R LUSHCHIK C LOHMUS A
Citation
M. Kirm et al., MULTIPLICATION OF ANION AND CATION ELECTRONIC EXCITATIONS IN WIDE-GAPKCL AND CSCL CRYSTALS, Solid state communications, 90(11), 1994, pp. 741-744
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
90
Issue
11
Year of publication
1994
Pages
741 - 744
Database
ISI
SICI code
0038-1098(1994)90:11<741:MOAACE>2.0.ZU;2-9
Abstract
Luminescence of self-trapped excitons, extrinsic recombinational lumin escence and crossluminescence on the excitation by synchrotron radiati on (7.7-30 eV) have been investigated for KCl and CsCl crystals at 6-8 0 K. The following mechanisms of multiplication of electronic excitati on are discussed: (i) decay of cation excitons with the formation of a double amount of anion excitons (KCl); (ii) photoionization of anions and cations with the subsequent formation of secondary excitons and e lectron-hole pairs by fast electrons.