Il Nuovo Cimento D

, Volume 15, Issue 9, pp 1149–1157 | Cite as

Composition dependence of photoconductivity in amorphous thin films of Se70Te30−xSbx

  • P. K. Dwivedi
  • S. K. Srivastava
  • A. Kumar
Article

Summary

The present paper reports the composition dependence of steady-state and transient photoconductivity in amorphous thin films of Se70Te30-xSbx, wherex is varied from 0 to 10. The results indicate that photoconductivity is highly composition dependent in this system and a discontinuity in various electrical parameters is observed at 4 at. % of Sb. This is explained in terms of increased disorder up to 4 at. % of Sb. However, at higher concentration of Sb, an ordered structure may be established due to the formation of microcrystalline phases as observed in X-ray diffraction patterns.

PACS 73.50

Electronic transport phenomena in thin films 

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Copyright information

© Società Italiana di Fisica 1993

Authors and Affiliations

  • P. K. Dwivedi
    • 1
  • S. K. Srivastava
    • 1
  • A. Kumar
    • 1
  1. 1.Department of PhysicsHarcourt Butler Technological InstituteKanpurIndia

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