Behavior of trapped electronic excitations in oxide crystals

S. V. Gorbunov, K. V. Bautin, S. V. Kudyakov, A. V. Kruzhalov, V. Yu Ivanov, V. Yu Yakovlev

Research output: Contribution to journalConference article

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 languageEnglish
Pages (from-to)95-101
Number of pages7
JournalRadiation Effects and Defects in Solids
Volume150
Issue number1-4
DOIs
Publication statusPublished - 1 Jan 1999
EventProceedings of the 1998 8th Europhysical Conference on Defects in Insulating Materials, EURODIM 98 - Keele, United Kingdom
Duration: 6 Jun 199811 Jun 1998

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ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Gorbunov, S. V., Bautin, K. V., Kudyakov, S. V., Kruzhalov, A. V., Ivanov, V. Y., & Yakovlev, V. Y. (1999). Behavior of trapped electronic excitations in oxide crystals. Radiation Effects and Defects in Solids, 150(1-4), 95-101. https://doi.org/10.1080/10420159908226214