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Electrical conductivity and thermoelectric power of (TlInSe2)0.2(TlGaTe2)0.8 crystals

Electrical conductivity and thermoelectric power of (TlInSe2)0.2(TlGaTe2)0.8 crystals The compounds TlInSe2 and TlGaTe2 have been prepared by direct elemental synthesis, and the (TlInSe2)0.2(TlGaTe2)0.8 solid solution has been synthesized from them. Crystals of the (TlInSe2)0.2(TlGaTe2)0.8 solid solution with a tetragonal structure have been grown, and their dc electrical conductivity and thermo-electric power have been measured in the temperature range 77–347 K. The results demonstrate that, at low temperatures, in the region of hopping conduction, the thermoelectric power of (TlInSe2)0.2(TlGaTe2)0.8 is proportional to T. With increasing temperature, the thermoelectric power becomes inversely proportional to temperature when the conductivity begins to be dominated by charge carriers excited to the allowed band. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Inorganic Materials Springer Journals

Electrical conductivity and thermoelectric power of (TlInSe2)0.2(TlGaTe2)0.8 crystals

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References (15)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Chemistry; Inorganic Chemistry; Industrial Chemistry/Chemical Engineering; Materials Science, general
ISSN
0020-1685
eISSN
1608-3172
DOI
10.1134/S0020168515030115
Publisher site
See Article on Publisher Site

Abstract

The compounds TlInSe2 and TlGaTe2 have been prepared by direct elemental synthesis, and the (TlInSe2)0.2(TlGaTe2)0.8 solid solution has been synthesized from them. Crystals of the (TlInSe2)0.2(TlGaTe2)0.8 solid solution with a tetragonal structure have been grown, and their dc electrical conductivity and thermo-electric power have been measured in the temperature range 77–347 K. The results demonstrate that, at low temperatures, in the region of hopping conduction, the thermoelectric power of (TlInSe2)0.2(TlGaTe2)0.8 is proportional to T. With increasing temperature, the thermoelectric power becomes inversely proportional to temperature when the conductivity begins to be dominated by charge carriers excited to the allowed band.

Journal

Inorganic MaterialsSpringer Journals

Published: Feb 15, 2015

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