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.
Volume 43, 2020
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