Abstract
Temperature dependence of d.c. conductivity is studied ina- Se75In25-x Pb x thin films wherex is varied from 0–10. From these measurements, the values of the pre-exponential factor (σ0) and activation energy (ΔE) are calculated for each glassy alloy. An approximate linear dependence of ln σ0 on AE is observed in this glassy system with good agreement between the expected and calculated σ0 values using Meyer-Neldel rule. Linear dependence of ln σ0 on ΔE in case of amorphous materials indicates that the conduction band tails a finite energy distance towards the valence band and Fermi level is controlled by fixed dominant hole levels deeper in the gap.
Similar content being viewed by others
References
Arora R and Kumar A 1989Rev. Phys. Appl. 25 199
Arora R and Kumar A 1991Phys. Status Solidi (a) 125 273
Arora R, Tripathi S K and Kumar A 1990J. Mater. Sci. Letts 9 348
Bhatia K L, Malik S K, Kishore N and Singh S P 1992Philos. Mag. B66 587
Carlson D E and Wronski C R 1979Amorphous semiconduc- tors, Topics in applied physics (ed.) M H Brodsky (Berlin: Springer-Verlag) Ch. 10,Vol. 36
Dwivedi S K, Dixit M and Kumar A 1998J. Mater. Sci. Letts 17 233
Eley D D 1967J. Polym. Sci. C17 73
Goyal D R, Laxminarayan K N, Srivastava K K and Hufnagel F 1982Indian J. Pure Appl. Phys. 20 1001
Guintini J C, Zanchetta J V, Jullien D, Eholic R and Houenou P 1981J. Non-Cryst. Solids 45 57
Gutman F and Lynos L E 1967Organic semiconductors (New York: John Wiley & Sons) p. 428
Kastner M, Adler D and Fritzsche H 1976Phys. Rev. Lett. 37 1504
Kemeny G and Rosenberg B 1970J. Chem. Phys. 52 4151
Kohli S, Sachdev V K, Mehra R M and Mathur P C 1998Phys. Status Solidi (b) 209 389
Many A, Harnik E and Gerlick D 1955J. Chem. Phys. 23 1733
Mehra R M, Kohli S, Pundir A, Sachdev V K and Mathur P C 1997J. Appl. Phys. 81 7842
Meyer W and Neldel H 1937Z. Technol. Phys. 18 588
Mott N F 1977Philos. Mag. 34 1101;36 413
Mott N F and Davis E A 1979Electronic processes in non- crystalline materials (Oxford: Clarendon)
Phillips J C 1979J. Non-Cryst. Solids 34 153
Roberts G G 1971J. Phys. C4 3167
Spear W E, Allan D, Lecomber P and Gaith A 1980Philos. Mag. B41 419
Staebler D L and Wronski C R 1977Appl. Phys. Letts 21 292
Thoge N, Yamamoto Y, Minami T and Tanaka M 1979Appl. Phys. Lett. 34 640
Thoge N, Matsuo H and Minami T 1987J. Non-Cryst. Solids 95/96 809
Yelon A and Movaghar B 1997Appl. Phys. Lett. 71 3549
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kumar, D., Kumar, S. Pre-exponential factor ina-Se75In25-x Pb x thin films. Bull Mater Sci 27, 441–444 (2004). https://doi.org/10.1007/BF02708561
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02708561