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    • Observation of Meyer–Neldel rule in thermally activated Poole–Frenkel photoconduction in a-Se70Te$_{30−x}$Cd$_{x}$ thin films

      V S Kushwaha N Mehta A Kumar

      Brief Report Volume 74 Issue 3 March 2010 pp 475-480

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/074/03/0475-0480

    • Keywords

       

      Chalcogenide glasses; Poole–Frenkel conduction; Meyer–Neldel rule.

    • Abstract

       

      In the present paper, we report the compensation effect on photoconductivity of thin films of Se70Te$_{30−x}$Cd$_{x}$ ($x = 2, 4, 6$) alloys for high field conduction. Steady state photoconductivity measurements have been made in thin films for different electric fields. The photoconduction was found to be ohmic at low fields and Poole–Frenkel type at high fields. Meyer–Neldel rule (MN rule) for the pre-exponential factor $(\sigma_{\text{ph}})_{0}$ and activation energy ($\Delta E_{\text{ph}}$) of photoconduction in thin films of Se70Te$_{30−x}$Cd$_{x}$ is observed in the present study.

    • Author Affiliations

       

      V S Kushwaha1 N Mehta2 A Kumar3

      1. Department of Physics, Kanpur Institute of Technology, Kanpur 208 007, India
      2. Department of Physics, Banaras Hindu University, Varanasi 221 005, India
      3. Department of Physics, Harcourt Butler Technological Institute, Kanpur 208 002, India

    • Dates

       
      Published
      March 2010
      Manuscript received
      20 February 2009
      Manuscript revised
      12 September 2009
      Accepted
      5 November 2009

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