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Trends in Physical Chemistry   Volumes    Volume 21 
Cathodoluminescence of zinc oxide crystals grown from melt under high pressure in the presence of ytterbium oxide
A. N. Baranov, M. V. Shestakov, M. V. Chukichev, V. A. Tafeenko, V. A. Mukhanov, V. L. Solozhenko
Pages: 81 - 86
Number of pages: 6
Trends in Physical Chemistry
Volume 21 

Copyright © 2021 Research Trends. All rights reserved

A mixture of poly- and single crystals of zinc and ytterbium (2 at.%) oxides were grown from the melt at high temperature (1430 °C) and high pressure (3.8 GPa). The crystals were transparent under examination with naked eye. The diameter of crystals was in the range from 0.005 to 2 mm. X-ray diffraction confirmed the presence of individual zinc and ytterbium oxides in the recovered samples. No change in zinc oxide lattice parameters was observed compared to pristine zinc oxide. Cathodoluminescence spectra of the mixture were recorded at 77 and 293 K. The collected spectra exhibit UV, green and near-infrared bands due to exciton recombination, presence of oxygen vacancies and ytterbium ions in ZnO crystals, respectively.
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