Optimisation of the Thermoelectric Figure of Merit in Fine Grained Semiconductor Materials Based upon Lead Telluride.

Abstract

The programme of work follows that set out in the initial report and it is proceeding on schedule. A model has been formulated for the lead telluride system and the effect of phonon-grain boundary scattering, doping and alloying on the lattice thermal conductivity of lead telluride investigated. The preliminary results of this work are embodied in the attached paper. The paper entitled The Effect of Phonon-Grain Boundary Scattering, Doping and Alloying on the Lattice Thermal Conductivity of Lead Telluride 'has been submitted for publication in Journal of Physics D. The main conclusion we reach is that in moderately doped materials with a grain size of 1 micrometer, the reduction in lattice thermal conductivity would be in the range 4 to 6 per cent for unalloyed lead telluride and 11 to 13 per cent for highly disorded alloys.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA148722

Entities

People

  • C. M. Bhandari
  • D. M. Rowe

Organizations

  • University of Wales

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Conductivity
  • Dispersion Relations
  • Electrical Engineering
  • Electrical Properties
  • Electronics
  • Engineering
  • Experimental Data
  • Figure Of Merit
  • Grain Boundaries
  • Grain Size
  • Lead Tellurides
  • Literature Surveys
  • Materials
  • Semiconductors
  • Single Crystals
  • Tellurides
  • Thermal Conductivity

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.
  • Solar Photovoltaics and Thermoelectric Devices.

Technology Areas

  • Microelectronics