Abstract
The transient optical absorption spectra and their decay kinetics have been investigated by time-resolved absorption spectroscopy technique in Zn-doped BeO crystals. Comparing transient optical absorption properties of self-trapped excitons (STEs) and Zn-impurity-trapped excitons we have made conclusions about the similarity of their hole components and distinctive peculiarities of forbidden optical transitions in their electron components. The metastable optical absorption of Zn+-centers has been first found. It is shown that the Zn-impurity-trapped exciton formation occurs at the hole stages of recombination thermotunnel processes with the participation of electron Zn+-centers. It is found that high probability of electron and hole center recombination formed in BeO-Zn crystals by electron pulses may be related to a high degree of their space correlation.
Original language | English |
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Pages (from-to) | 95-101 |
Number of pages | 7 |
Journal | Radiation Effects and Defects in Solids |
Volume | 150 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 1 Jan 1999 |
Event | Proceedings of the 1998 8th Europhysical Conference on Defects in Insulating Materials, EURODIM 98 - Keele, United Kingdom Duration: 6 Jun 1998 → 11 Jun 1998 |
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Materials Science(all)
- Condensed Matter Physics