Reduction of Lattice Thermal Conductivity in PbTe Induced by Artificially Generated Pores

Figure 2

(a) Schematics of pore generation in the PbTe host matrix using PVA or NaCl. Scanning electron microscopy images of the fractured surfaces for (b) before and (c) after sonication for PbTe + PVA samples and (d) before and (e) after sonication for PbTe + NaCl, respectively.

(a)

(b)

(c)

(d)

(e)