caa a22 4500 475822064 CHVBK 20180406123821.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF02509605 doi (NATIONALLICENCE)springer-10.1007/BF02509605 Relaxation, self-trapping, and decay of electron excitations in wide-gap oxides [Elektronische Daten] [Ch. Lushchik, A. Lushchik, T. Kyarner, M. Kirm, S. Dolgov] Emission spectra ofMgO, Al 2O3, Y2O3, andSc 2O3 crystals, excited at 8 K by photons with energies 5-40 eV, are measured. The luminescence of free excitons andGe 2+ centers forMgO, the self-trapped exciton emission (STEE) forAl 2O3 andY 2O3, and the tunnel self-luminescence forScO 3 are studied. A distinction between hole polarons in oxides and self-trapped holes in halides leads to a sharp difference in the mechanisms of STEE creation on electronhole recombination for these two classes of solids. The electron-hole, hole-electron, and exciton mechanisms of excitation multiplication are identified. The high radioresistance of wide-gap oxides and the behavior of oxygen interstitials inMgO crystals are discussed. Kluwer Academic/Plenum Publishers, 2000 Lushchik Ch aut Lushchik A. aut Kyarner T. aut Kirm M. aut Dolgov S. aut Russian Physics Journal Kluwer Academic Publishers-Plenum Publishers 43/3(2000-03-01), 171-180 1064-8887 43:3<171 2000 43 11182 https://doi.org/10.1007/BF02509605 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02509605 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lushchik Ch aut NATIONALLICENCE 700 1- Lushchik A. aut NATIONALLICENCE 700 1- Kyarner T. aut NATIONALLICENCE 700 1- Kirm M. aut NATIONALLICENCE 700 1- Dolgov S. aut NATIONALLICENCE 773 0- Russian Physics Journal Kluwer Academic Publishers-Plenum Publishers 43/3(2000-03-01), 171-180 1064-8887 43:3<171 2000 43 11182 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer