Enhanced Thermoelectric Performance of Lightly Pb-Doped Sb₂Te₃ Polycrystalline Alloys for Power Generation in Midtemperature Range

Figure 3

Carrier transport properties of the Sb_2–PbTe₃ samples. (a) Hall carrier concentration and (b) Hall mobility, as functions of doping content. DOS effective mass as a function of doping content along (c) PE and (d) PA directions. The insets in (c) and (d) show the logarithmic carrier concentration as a function of the absolute Seebeck coefficient along the PE and PA directions, respectively.

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