Numéro |
J. Phys. III France
Volume 4, Numéro 3, March 1994
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Page(s) | 493 - 501 | |
DOI | https://doi.org/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. Sharma21 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)
Abstract
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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