Electrical properties of hot wall deposited PbTe–SnTe thin films
Abstract
Polycrystalline Pb1−xSnxTe (0.0 ≤ x ≤ 1.0) telluride alloys were synthesized by the direct fusion technique. Thin films of these materials were prepared by a hot wall deposition method on glass substrates at Tsub =230–330 ◦C and in a vacuum of about 10−5 Torr. The microstructure of the films was characterized by XRD, SEM, EDX and AES. The films showed a natural cubic structure. The thin films’ microstructure consisted of densely packed grains with dimensions of 50–300 nm and crystallite growth direction is perpendicular to substrate plane. The as-grown Pb1−xSnxTe films showed p-type conductivity. Thermoelectric measurements of the films showed high values for the room-temperature Seebeck coefficient ranging, from 20 to 400 µV·K−1, for SnTe to PbTe thin films, respectively. The conductivity of the films was in the range of 3·101–1·104 Ω−1·cm−1.
Supporting agencies: This work has been supported by Belarusian Republican Foundation for Fundamental Research and by Russian Foundation for Basic Research (grants 12-02-90029-Bel a, 13-0200381).
About the Authors
V. A. Ivanov
State Scientific and Production Association “Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus
Belarus
Belarus
P. Brovka Street 19, 220072 Minsk.
V. F. Gremenok
State Scientific and Production Association “Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus
Belarus
Belarus
P. Brovka Street 19, 220072 Minsk.
H. G. Seidi
State Scientific and Production Association “Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus
Belarus
Belarus
P. Brovka Street 19, 220072 Minsk.
S. P. Zimin
Yaroslavl State University
Russian Federation
Russian Federation
Sovetskaya Street 14, 150000 Yaroslavl.
E. S. Gorlachev
Yaroslavl State University
Russian Federation
Russian Federation
Sovetskaya Street 14, 150000 Yaroslavl.
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Review
For citations:
Ivanov V.A., Gremenok V.F., Seidi H.G., Zimin S.P., Gorlachev E.S. Electrical properties of hot wall deposited PbTe–SnTe thin films. Nanosystems: Physics, Chemistry, Mathematics. 2013;4(6):816-822.
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