Abstract
PbTe-based materials are promising for efficient heat energy to electricity conversion. We present studies of the thermoelectric properties of the PbTe-SrTe system. X-ray diffraction patterns reveal that all the samples crystallize in the rock salt structure without noticeable secondary phase. Na2Te doping of the PbTe-SrTe materials resulting in a positive sign Hall coefficient indicating p-type conduction. Lattice thermal conductivity is significantly decreased with the insertion of SrTe in PbTe lattice. The ZT ∼ 1.3 of these materials is derived from their very low thermal conductivities and reasonably high power factor at 800 K.
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Biswas, K., He, J., Zhang, Q. et al. Investigation of the thermoelectric properties of the PbTe-SrTe system. MRS Online Proceedings Library 1267, 605 (2010). https://doi.org/10.1557/PROC-1267-DD06-05
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DOI: https://doi.org/10.1557/PROC-1267-DD06-05