Conductivity Effects in Bi₂TeO₅ Single Crystals

• Authors: K. Agarkov , L. Sadovskaya
• Languages of publication: EN

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.

Keywords

EN

72.20.Jv

Discipline

• 72.20.Jv: Charge carriers: generation, recombination, lifetime, and trapping

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 4
• Pages: 940-942

Dates

published

2018-04

Contributors

author

K. Agarkov

• Oles Honchar National University, 49010, Dnipro, Ukraine

author

L. Sadovskaya

• Oles Honchar National University, 49010, Dnipro, Ukraine

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Identifiers

DOI

10.12693/APhysPolA.131.940