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2018 | 133 | 4 | 940-942
Article title

Conductivity Effects in Bi₂TeO₅ Single Crystals

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Abstracts
EN
The current-voltage characteristics (I-V) of non-stoichiometric bismuth tellurite crystals were studied in a range of temperatures from 150°C to 350°C and fields up to 2.5 kV/cm with asymmetric contacts (In-Ga eutectic and Na₂SiO₃). The I-V curves and observed monopolar injection are described by the approximation of space charge limited currents. In the composition of 47% Bi₂O₃-53% TeO₂ electronic conduction is prevailed. In the composition 43% Bi₂O₃-57% TeO₂ the conductivity is contributed by electrons and holes. The spectrum of local states in the band gap of the studied crystals is quasicontinuous, which cannot be described by models of a discrete or exponential distribution.
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EN
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Year
Volume
133
Issue
4
Pages
940-942
Physical description
Dates
published
2018-04
Contributors
author
  • Oles Honchar National University, 49010, Dnipro, Ukraine
author
  • Oles Honchar National University, 49010, Dnipro, Ukraine
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv133n4p42kz
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