Paper Title:
The Effect of Powder Size on Thermoelectric Properties of 95%Bi2Te3-5%Bi2Se3 Alloy
  Abstract

The n-type (95%Bi2Te3- 5%Bi2Se3) compound was newly fabricated by gas atomization and hot extrusion, which is considered to be a mass production technique of this alloy. The effect of powder size on thermoelectric properties of 0.04% SbI3 doped 95%Bi2Te3- 5%Bi2Se3 alloy were investigated. Seebeck coefficient (α) and Electrical resistivity (ρ) increased with increasing powder size due to the decrease in carrier concentration by oxygen content. With increasing powder size, the compressive strength of 95%Bi2Te3-5%Bi2Se3 alloy was increased due to the relative high density. The compound with ~300 μm size shows the highest power factor among the four different powder sizes. The rapidly solidified and hot extruded compound using 200~300 μm powder size shows the highest compressive strength.

  Info
Periodical
Solid State Phenomena (Volume 119)
Edited by
Chang Kyu Rhee
Pages
271-274
DOI
10.4028/www.scientific.net/SSP.119.271
Citation
S. J. Hong, K.S. Hwang, J. W. Byeon, M. K. Lee, C. K. Rhee, B. S. Chun, "The Effect of Powder Size on Thermoelectric Properties of 95%Bi2Te3-5%Bi2Se3 Alloy", Solid State Phenomena, Vol. 119, pp. 271-274, 2007
Online since
January 2007
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