Abstract
PbSe thin films of thicknesses in the range 20 to about 170 nm have been prepared on glass substrates held at room temperature by thermal evaporation of the bulk alloy at a pressure of 5×10−5 torr. The thermoelectric power of these films has been evaluated as a function of temperature in the range 300 to 500 K from the thermal e.m.f. data. It was found that the thermoelectric power of all the films initially increases with increasing temperature, then reaches a maximum, and, with a further increase in temperature, decreases rapidly and also changes sign. The possible reasons for this peculiar behaviour have been given. It is also found that there is no systematic variation of thermoelectric power with thickness of the films. This is probably due to completely specular scattering at the external and internal surfaces of PbSe thin films or to changes in stoichiometry of different films.
Similar content being viewed by others
References
R. W. VASS and R. M. ANDERSEN,J. Appl. Phys. 45 (1974) 3463.
D. V. EDDALLA,Infrared Phys. 16 (1976) 47.
L. W. JAMES and R. L. MOON,Appl. Phys. Lett,26 (1975) 467.
A. G. FISCHER,Thin Solid Films 36 (1979) 469.
I. A. SMIRNOV, B. YA. MOIZHES and E. D. NENSBERG,Sov. Phys. Solid State 2 (1960) 1973.
H. ABRAHAMS and R. M. TAUBER,J. Appl. Phys. 40 (1969) 3868.
L. I. BYTENSKII, T. S. GUDKIN, E. K. IORDANISHVILLAI, S. A. KARMIN, V. I. KAIDANOV, S. A. NEMOV and YU. I. RAVICH,Sov. Phys. Semicond. 11 (1977) 894.
T. S. GUDKIN, I. A. DRABKIN, V. I. KAIDANOV and C. G. STERLYADKINA, ibid.8 (1975) 1453.
V. DAMODARA DAS, N. JAYAPRAKASH and N. SOUNDARARAJAN,J. Mater. Sci. 16 (1981) 3331.
V. DAMODARA DAS and J. CHANDRA MOHANTY,J. Appl. Phys. 54 (1983) 977.
V. DAMODARA DAS and K. SEETHARAMA BHAT, ibid.54 (1983) 6641.
K. SEETHARAMA BHAT and V. DAMODARA DAS,Phys. Rev. B 32 (1985) 6713.
R. M. CANDEA, R. TUREU, P. MARGINEANU and D. DADARLAT,Phys. Status Solidi (a)96 (1986) 337.
E. H. PUTLEY,Proc. Phys. Soc. London B68 (1955) 35.
R. A. SMITH,Physica 20 (1954) 910.
I. N. DUBROVSKAYA and YU. I. RAVICH,Sov. Phys. Solid State 8 (1966) 1160.
E. MILLER, K. KOMAREK and I. CADOFF,J. Appl. Phys. 32 (1961) 2457.
K. SEETHARAMA BHAT, PhD thesis, Indian Institute of Technology, Madras (1984).
V. DAMODARA DAS and K. SEETHARAMA BHAT,Phys. Rev. B. 40 (1989) 7696.
P. C. NEWMAN,Proc. Phys. Soc. London 79 (1962) 1299.
M. H. BRODSKY and J. N. ZEMEL,Phys. Rev. 155 (1967) 780.
L. I. BYTENSKII, S. A. KAZMIN, V. I. KAIDANOV, YU. I. RAVICH and A. V. SAVELEV,Sov. Phys. Semicond. 16 (1982) 712.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Das Damodara, V., Bhat, K.S. Temperature variation of thermoelectric power of vacuum deposited PbSe thin films and its thickness dependence. J Mater Sci: Mater Electron 1, 169–174 (1990). https://doi.org/10.1007/BF00696071
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00696071