Jpn. J. Appl. Phys. 11 (1972) pp. 1472-1479  |Next Article|  |Table of Contents|
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Ac Conductivity of Amorphous As₂Se₃

Michihiko Kitao

(Received November 30, 1971)

Electrical conduction in amorphous As₂Se₃ is investigated at frequencies from 30 Hz to 10.3 GHz in the temperature range -180° to 500°C. The observed conductivity σ can be expressed as a sum of dc conductivity σ_dc and ac conductivity σ_ac, namely σ=σ_dc+σ_ac. The quantity σ_dc depends exponentially on reciprocal temperature. The contribution of σ_ac to σ is negligible at high temperature. At low temperature, σ_ac is nearly independent of temperature but strongly depends on the frequency. The frequency dependence of σ_ac is linear and quadratic in the frequency range up to 10⁶ Hz and between 10⁶ and 10⁸ Hz, respectively, and above 10⁸ Hz, σ_ac has no frequency dependence. The experimental results of the conductivity of amorphous As₂Se₃ cannot be interpreted by the hopping conduction only, and the effects of spatial inhomogeneity may be responsible for the conduction mechanisms in amorphous As₂Se₃.

URL: http://jjap.jsap.jp/link?JJAP/11/1472/
DOI: 10.1143/JJAP.11.1472

References | Citing Articles (28)

1. A. F. Ioffe and A. R. Regel: Progress in Semiconductors ed. A. F. Gibson (Heywood & Co. Ltd., London, 1960) Vol. 3, p. 237.
2. A. I. Gubanov: Quantum Electron Theory of Amorphous Conductors (Consultants Bureau, New York, 1965).
3. M. H. Cohen, H. Fritzsche and S. R. Ovshinsky: Phys. Rev. Lett. 22 (1969) 1065[APS].
4. E. A. Davis and N. F. Mott: Philos. Mag. 22 (1970) 903.
5. M. Pollak: Proc. Intern. Conf. Physics Semiconductors, Exeter, 1962 (Institute of Physics and the Physical Society, London, 1962) p. 86.
6. E. B. Ivkin and B. T. Kolomiets: J. Non-Cryst. Solids 3 (1970) 41.
7. A. I. Lakatos and M. Abkowitz: Phys. Rev. B 3 (1971) 1791[APS].
8. C. Crevecoeur and H. J. de Wit: Solid State Commun. 9 (1971) 445.
9. A. E. Owen and J. M. Robertson: J. Non-Cryst. Solids 2 (1970) 40[CrossRef].
10. M. Kitao, F. Araki and S. Yamada: Phys. Status Solidi 37 (1970) K119.
11. R. A. Street, G. Davies and A. D. Yoffe: J. Non-Cryst. Solids 5 (1971) 276.
12. M. Kitao, N. Asakura and S. Yamada: Jpn. J. Appl. Phys. 8 (1969) 499[JSAP].
13. A. D. Pearson: J. Electrochem. Soc. 111 (1964) 753.
14. H. M. Altschuler: Handbook of Microwave Measurement ed. M. Sucher and J. Fox (Polytechnic Press of the Polytechnic Institute, Brokklyn, 1963) Vol. 2, p. 530.
15. M. Pollak: Philos. Mag. 23 (1971) 519.
16. M. Pollak and T. H. Geballe: Phys. Rev. 122 (1961) 742[APS].
17. H. Fritzsche: J. Non-Cryst. Solids 6 (1971) 49[CrossRef].
18. J. Volger: Progress in Semiconductors ed. A. F. Gibson (Heywood & Co. Ltd., London, 1960) Vol. 4, p. 206.