#6692. The room-temperature thermoelectric property of PbTe enhanced by mean-free-path filtering

August 2026publication date
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Journal’s subject area:
Mechanical Engineering;
Metals and Alloys;
Mechanics of Materials;
Materials Chemistry;
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Abstract:
In order to obtain excellent thermoelectric property of PbTe at room temperature, the most e?ective approach so far has been reducing the phonon thermal conductivity while maintaining the electronic performance. Based on the first-principles calculation, the scattering mechanisms of electrical transport and thermal transport are clarified. The electrical transport as well as thermal transport of PbTe under various mean free path are studied by taking into account electron/hole mean free path and phonon mean free path. The order of contribution to electrical transport is mean free path scattering>polar optical phonon scattering>acoustic deformation potential scattering>ionized impurity scattering.
Keywords:
Electrical transport; Mean-free-path filtering; Scattering mechanism; Thermal transport

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