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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)3492-3495
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number4
DOIs
Publication statusPublished - 2012
Externally publishedYes

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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