Dc conductivity and High Field Behavior of Se100-xTex Alloy

  • Mohsin Ganaie
  • Shabir Kumar
  • Adam A. Bahishti
  • M. ZulfequarEmail author
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


The dc conductivity has been carried out in vacuum-evaporated thin films of amorphous Se100-xTex(x = 4, 8, 12, 16) in the temperature range of (317–378 K). It is found that dc conductivity increases and the activation energy (ΔE) decreases with increase of Te concentration. The conduction is explained on the basis of tunneling of carrier in the band tail of localized state. The high field measurement has been observed at various fixed temperature, a dc voltage (0–400 V) was applies across the sample. I–V characteristic data show that at low electric fields an ohmic behavior is observed. However, at high electric field super ohmic behavior is observed. Analysis of the data show the absence of space charge limited conduction (SCLC) in all glassy alloys as ln I/V versus V curves are not found to be straight lines. Instead ln I/V versus V 1/2 are found to be straight line, with high correlation coefficient. This suggests the conduction process is either of the Pool-Frenkel or Schottky emission. A detailed analysis show that dominant mechanism is Pool-Frenkel type conduction.


Amorphous semiconductor DC conductivity High field conduction 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Mohsin Ganaie
    • 1
  • Shabir Kumar
    • 1
  • Adam A. Bahishti
    • 1
  • M. Zulfequar
    • 1
    Email author
  1. 1.Department of PhysicsJamia Millia IslamiaNew DelhiIndia

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