Abstract
High-density compacts of lead tin telluride with grain sizes,L, in the range 25<L<60 µm, 10<L<25 µm, 5<L<10 µm andL<5 µm and with good mechanical properties have been prepared using a two-stage pressing technique. Preliminary measurements of the thermoelectric transport properties of cold-compacted and hot-pressed material are reported. The lattice thermal conductivity decreases with a reduction in grain size. In the cold-compacted material this reduction more than offsets the accompanying reduction in the electrical power factor and results in a significant improvement in the thermoelectric figure of merit.
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Rowe, D.M., Clee, M. Preparation of high-density small grain size compacts of lead tin telluride. J Mater Sci: Mater Electron 1, 129–132 (1990). https://doi.org/10.1007/BF00694731
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DOI: https://doi.org/10.1007/BF00694731