Dc conductivity and High Field Behavior of Se100-xTex Alloy

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

Abstract

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.

Keywords

Amorphous semiconductor DC conductivity High field conduction 

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References

  1. 1.
    K. Abe, H. Takebe, K. Morinaga, j. Non-Cryst.Solids 212, 168 (1987).Google Scholar
  2. 2.
    B. F. Carcia, F. D Kalk, P. E. Bierstedt, A. Ferretti, G. A. Jones, D. G. Swarizfager, J. Appl. Phys. 64, 1715 (1998).Google Scholar
  3. 3.
    Z. H. Khan, M. Zulfequar, T. P. Sharma, M. Husain, Optical Materials 6, 139 (1996).CrossRefGoogle Scholar
  4. 4.
    D. P. Gosain, T. Shimizu, M. Ohmura, T. Bando, S. Okano, J. Mater. Sci. 26, 3271 (1991).Google Scholar
  5. 5.
    N. F. Mott, Philos. Mag. 32, 961 (1975).Google Scholar
  6. 6.
    T. Shimizu, M. Kumeda, M. Ishikawa, J. Non-Cryst. Solids 1, 33 (1979).Google Scholar
  7. 7.
    R. M. Mehra, R. Shaym, P. C. Mathur, Phys. Rev. B 19, 6225 (1979).CrossRefGoogle Scholar
  8. 8.
    J. E. Hall, J. Non-Cryst. Solids 2, 125 (1970).Google Scholar
  9. 9.
    A. Kumar, S. Kumar, R. Arora, Solid State Common. 78, 65 (1991).Google Scholar
  10. 10.
    S. Kumar, R. Arora, A. Kimar, J. Mater. Sci.Lett. 10, 1280 (1991).Google Scholar
  11. 11.
    B. T. Kolomiets, E. Lebedev, Fiz. Tekh. Polu. Prov. 1, 815 (1976).Google Scholar
  12. 12.
    Servini A & jonscher A K, Thin Solid Films, 3, 341 (1969).CrossRefGoogle Scholar
  13. 13.
    Morgan M & Walley P A, Philos Mag, 23, 661 (1971).Google Scholar
  14. 14.
    Morgan M, Thin Solid Films, 7, 313 (1971).CrossRefGoogle Scholar
  15. 15.
    Khan H & Feltz A, Thin Solid Films, 150, 135 (1987).CrossRefGoogle Scholar
  16. 16.
    M. Kitao, K. Yoshii and S. Yamada, “Thermoelectric Power of Glassy As40Se60–xTex,” Physica Status Solidi (a), 91, 1 (1985), pp. 271–277. doi: 10.1002/pssa.2210910133.CrossRefGoogle Scholar
  17. 17.
    A. B. Gadkari and J. K. Zope, “Electrical Properties of Amorphous Semiconducting Se-Te-In System,” Journal of Non-Crystalline Solids, 103, 2–3 (1988), pp. 295–299. doi: 10.1016/0022-3093(88)90208-6.CrossRefGoogle Scholar
  18. 18.
    N. F. Mott, Philos. Mag. 22, 7 (1970).Google Scholar
  19. 19.
    N. F. Mott, E. A. Davis, Philos. Mag. 22, 903 (1970).Google Scholar
  20. 20.
    R. M. Hill, Philos.Mag. 20, 59 (1970).Google Scholar
  21. 21.
    A. S. Barriere, J. pichon, S. Lotfi, G. Gevers, Thin Solid Films 89, 77 (1982).CrossRefGoogle Scholar
  22. 22.
    T. Mahalingam, M. Radhakrishnan, C. Balasubramaniam, Thin Solid Films 78, 245 (1981).CrossRefGoogle Scholar
  23. 23.
    K. S. Chari, B. Mathur, Thin Solid Films 75, 157 (1981).CrossRefGoogle Scholar
  24. 24.
    M. J. A. Sarkar, M. A. R. Sarkar, Ind. J. Pure Appl. Phys. 38, 190 (2000).Google Scholar
  25. 25.
    Handbook of Electronic and Photonic Materials S. Kasap, P. Capper. @ c Springer 703 (2006).Google Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

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

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