Electrical properties of a-antimony selenide
Sanjeev Gautam, D. K. Shukla, Shelly Jain, N. Goyal
Abstract
This paper reports conduction mechanism in a- over a wide range of temperature (238K to 338K) and frequency (5Hz to 100kHz). The d.c. conductivity measured as a function of temperature shows semiconducting behaviour with activation energy ΔE= 0.42 eV. Thermally induced changes in the electrical and dielectric properties of a- have been examined. The a.c. conductivity in the material has been explained using modified CBH model. The band conduction and single polaron hopping is dominant above room temperature. However, in the lower temperature range the bipolaron hopping dominates.
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