Fabrication and Enhanced Thermoelectric Properties of Alumina Nanoparticle-Dispersed Bi_0.5Sb_1.5Te₃ Matrix Composites

Figure 1

(a) FE-SEM image of Al₂O₃ nanoparticles used in this study, (b) size distribution of the nanoparticles in solvent with different concentration, (c) surface morphology of p-type Bi_0.5Sb_1.5Te₃ nanopowders prepared from MCP, (d) XRD patterns of fabricated p-type Bi_0.5Sb_1.5Te₃ nanopowders, (e) the surface morphology of the fabricated Al₂O₃/BST composite powders, and (f) TEM image showing Al₂O₃ nanoparticles dispersed in BST matrix powders.

(a)

(b)

(c)

(d)

(e)

(f)