Journal of Electronic Materials

, Volume 41, Issue 9, pp 2307–2312

Measurement of Thermal Conductivity Using Steady-State Isothermal Conditions and Validation by Comparison with Thermoelectric Device Performance

Authors

    • Sensors and Electron Devices DirectorateUS Army Research Laboratory
  • Jay R. Maddux
    • Sensors and Electron Devices DirectorateUS Army Research Laboratory
  • Parvez N. Uppal
    • Sensors and Electron Devices DirectorateUS Army Research Laboratory
Article

DOI: 10.1007/s11664-012-2178-3

Cite this article as:
Taylor, P.J., Maddux, J.R. & Uppal, P.N. Journal of Elec Materi (2012) 41: 2307. doi:10.1007/s11664-012-2178-3

Abstract

A new technique for measuring thermal conductivity with significantly improved accuracy is presented. By using the Peltier effect to counterbalance an imposed temperature difference, a completely isothermal, steady-state condition can be obtained across a sample. In this condition, extraneous parasitic heat flows that would otherwise cause error can be eliminated entirely. The technique is used to determine the thermal conductivity of p-type and n-type samples of (Bi,Sb)2(Te,Se)3 materials, and thermal conductivity values of 1.47 W/m K and 1.48 W/m K are obtained respectively. To validate this technique, those samples were assembled into a Peltier cooling device. The agreement between the Seebeck coefficient measured individually and from the assembled device were within 0.5%, and the corresponding thermal conductivity was consistent with the individual measurements with less than 2% error.

Keywords

Thermoelectric power generation thermal conductivity Seebeck coefficient

Copyright information

© TMS (outside the USA) 2012