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The Enhancement of Thermoelectric Power and Scattering of Carriers in Bi2−xSnxTe3 Single Crystals

Published online by Cambridge University Press:  15 February 2011

V.A. Kulbachinskii ,
H. Negishi ,
M. Sasaki ,
Y. Giman  and
M. Inoue
V.A. Kulbachinskii
Affiliation:
Low Temperature Physics Department, Physics Faculty, Moscow State University, 119899, Moscow, Russia
H. Negishi
Affiliation:
Department of Material Science, Hiroshima University, Higashi-Hiroshima 739, Japan
M. Sasaki
Affiliation:
Department of Material Science, Hiroshima University, Higashi-Hiroshima 739, Japan
Y. Giman
Affiliation:
Department of Material Science, Hiroshima University, Higashi-Hiroshima 739, Japan
M. Inoue
Affiliation:
Department of Material Science, Hiroshima University, Higashi-Hiroshima 739, Japan
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Abstract

Thermoelectric power, electrical resistivity, and Hall effect of p-type Bi2−xSnxTe3 (0<x<0.03) singlecrystals have been measured in the temperature range 4.2–300K. By doping of Sn atoms into the host Bi2Te3 lattice, the enhancement in the thermoelectric power is observed in the intermediate temperature range 30–150 K for x≤0,0075. The activation type behaviour of Hall coefficient and resistivity are found which corresponds to the Sn-induced impurity band located above the second lower valence band.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 478: Symposium Q – Thermoelectric Materials - New Directions and Approaches , 1997 , 133
Copyright
Copyright © Materials Research Society 1997

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