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      https://www.ias.ac.in/article/fulltext/pram/050/01/0025-0033

    • Keywords

       

      Chalcogenide glasses; amorphous; semiconductors; a.c. conductivity; electrical properties

    • Abstract

       

      This paper reports conduction mechanism in a-Sb2Se3 over a wide range of temperature (238 to 338 K) and frequency (5 Hz to 100 kHz). 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-Sb2Se3 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.

    • Author Affiliations

       

      Sanjeev Gautam1 D K Shukla1 Shelly Jain1 N Goyal1

      1. Centre of Advanced Study in Physics, Panjab University, Chandigarh - 160 014, India
    • Dates

       
  • Pramana – Journal of Physics | News

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