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    • Keywords


      Amorphous germanium; annealing; substrate temperature; density of states; optical energy gap; d.c. electrical conductivity

    • Abstract


      The influence of substrate temperature on electrical and optical properties of the amorphous germanium films deposited under well-defined conditions has been investigated. DC electrical conductivity in the temperature range of 80–573°K has been measured. In the low temperature region Mott’sT−1/4 law of conductivity is obeyed. The estimated values ofT0 andN show significant decrease with change inTs in steps of 50°K. Similar results are seen in annealed films. The values of activation energy and optical energy increase withTs.

    • Author Affiliations


      S V Chandole1 2 Ujwala V Hulsurkar1 S S Shah1

      1. Department of Physics, Marathwada University, Aurangabad - 431 004, India
      2. Department of Physics, Deogiri College, Aurangabad - 431 005, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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