Thermoelectric properties of Bi 2Te 3-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

Thermoelectric properties of Bi ₂Te ₃-PbTe pseudo binary near the eutectic composition

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

KU-KIST Graduate School of Converging Science and Technology

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

(Bi ₂Te ₃) _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 Bi ₂Te ₃, 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.

Original language	English
Pages (from-to)	3492-3495
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	12
Issue number	4
DOIs	https://doi.org/10.1166/jnn.2012.5581
Publication status	Published - 2012 Jul 6

Keywords

PbTe
Phase separation
Thermal conductivity
Thermoelectric

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Biomedical Engineering
Materials Science(all)
Condensed Matter Physics

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Jung, K., Jang, H. W., Kang, C. Y., Yoo, M. J., Choi, W. C., & Kim, J. S. (2012). Thermoelectric properties of Bi ₂Te ₃-PbTe pseudo binary near the eutectic composition. Journal of Nanoscience and Nanotechnology, 12(4), 3492-3495. https://doi.org/10.1166/jnn.2012.5581

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