Thermoelectric Properties of Bi&lt;SUB&gt;2&lt;/SUB&gt;Te&lt;SUB&gt;3&lt;/SUB&gt;–PbTe Pseudo Binary Near the Eutectic Composition

Kyooho Jung; Ho Won Jang; Chong‐Yun Kang; Myong‐Jae Yoo; Won Chel Choi; Jin-Sang Kim

doi:10.1166/jnn.2012.5581

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Ho Won Jang

Thermoelectric Properties of Bi2Te3–PbTe Pseudo Binary Near the Eutectic Composition

Article 2012 en

Authors

KJ
Kyooho Jung
Ho Won Jang
CK
Chong‐Yun Kang

Abstract

1 min read

(Bi2Te3)(1-x)(PbTe)(x) binary systems near eutectic composition were prepared by melting of elemental metals and a sequential water quenching process and their microstructures and thermoelectric properties were investigated. Multiple phases such as Bi2Te3, BiPbTe and PbTe were observed due to phase separation when the composition x was higher than the eutectic point. Also the electrical conduction type of the alloys converted from p-type to n-type in the phase separated alloys. The lattice thermal conductivities in the phase-separated alloys are lower than those in alloys without phase separation, attributable to increased boundary scattering.

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