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- W2800873497 abstract "We study theoretically the effect of heavy doping on the thermoelectric properties of p-type PbTe in the acceptor doping interval of 5 × 1019 to 4 × 1020 cm−3 and in the temperature range of 300 to 900 K. In our calculations, a three-band model of the PbTe electron energy spectrum is used that takes into account not only the light electron and hole bands but also the heavy-hole band. This so-called Σ-band plays an important role in the emergence of the figure-of-merit increase in this material at heavy acceptor doping. The calculated thermoelectric characteristics appear to be sensitive to the doping level. An increase in the figure-of-merit up to ZT ≈ 1.3 at 900 K was found at the doping level of 2 × 1020 cm−3. The maximum of ZT on the temperature axis is situated close to the temperature at which the light hole and heavy hole band edges coincide and hence, a prominent density-of-states singularity appears in the valence band, and the Fermi level lies near this singularity." @default.
- W2800873497 created "2018-05-17" @default.
- W2800873497 creator A5085199041 @default.
- W2800873497 date "2018-04-28" @default.
- W2800873497 modified "2023-10-16" @default.
- W2800873497 title "High doping effect on the thermoelectric properties of p-type lead telluride" @default.
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- W2800873497 doi "https://doi.org/10.1063/1.5025766" @default.
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