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

Table 1

Comparison of electrical resistivity, carrier density, carrier mobility, and Seebeck coefficient of all samples measured by Hall-effect measurement at room temperature.

Sample	Electrical resistivity (mΩ·cm)	Carrier density (#/cm^3)	Carrier mobility (cm^2/Vs)	Seebeck coefficient (𝜇V/K)
BST	1.52	1.81×10^19	297	205
0.3 vol.%Al2O3/BST	1.50	1.32×10^19	280	225
0.5 vol.%Al2O3/BST	1.94	1.57×10^19	226	210
1.0 vol.%Al2O3/BST	2.46	1.45×10^19	195	225