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Research Article

Highly Textured N-Type SnSe Polycrystals with Enhanced Thermoelectric Performance

Figure 3

The temperature dependence of the electrical transport properties for the polycrystalline SnSe samples before and after texturing process; unfilled symbols and filled symbols present the properties measured along the directions that are perpendicular and parallel to the SPS pressure, respectively: (a) electrical conductivity, (b) Seebeck coefficient, (c) carrier mobility and carrier concentration, and (d) power factor; reported data [20, 34, 41] are also plotted for comparison; the inset shows the Pisarenko relationship; Seebeck coefficient as a function of carrier concentration, with different effective masses. The inset schematic figures show the measurement directions for electrical and thermal transport properties.

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