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SEM micrograph of PbTe1 fracture surface indicating to over grains distributed within a bulk material.
Resistivity and Seebeck coefficient of PbTe1 (circles) and PbTe2 (triangles) specimens from room temperature to .
Temperature dependent carrier concentration and mobility (inset) for PbTe1 (circles) and PbTe2 (triangles). Plotting the logarithm of yields an energy barrier of for both specimens.
Seebeck coefficient vs carrier concentration for the PbTe1 and PbTe2 nanocomposites (closed circles), two polycrystalline bulk PbTe compounds synthesized for this report (open circles), single crystal bulk PbTe (open triangles), and the calculated relationship (dashed line) from Ref. 22.
Room temperature percent theoretical density, resistivity , Seebeck coefficient , thermal conductivity , carrier concentration , and composition.
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