J. Phys. III France
Volume 4, Numéro 3, March 1994
Page(s) 493 - 501
DOI: 10.1051/jp3:1994141
J. Phys. III France 4 (1994) 493-501

Investigation of electrical conductivity and optical absorption in amorphous In XSe 100-X alloys

A. S. Maan1, D. R. Goyal1, Sachin K. Sharma1 and T. P. Sharma2

1  Physics Department, Maharshi Dayanand University, Rohtak - 124 001, Haryana, India
2  Department of Physics, Meerut University, Meerut - 250 004, India

(Received 30 June 1993, revised 10 December 1993, accepted 14 December 1993)

Results related to the d.c. conductivity made over a wide temperature range (130-380 K) in amorphous thin films of various glassy compositions of In XSe 100-X alloys are presented in this paper. D.C. conductivity in present set of glasses comprises of three well-known regions and from these observations a number of parameters have been calculated. The conduction has been discussed in terms of known transport mechanisms. Also included are the optical absorption studies in thin films of the present set of alloys. These measurements have been made on the as prepared and annealed samples. The annealing of samples has an important effect on the optical properties and causes a reduction in the energy range of tail states, thus an increase in the optical energy gap in all the alloys. The mechanism of optical absorption seems to follow the rule of nondirect transitions. The results obtained for different samples are compared with each other and reasonable curves for optical absorption are found.

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