Seebeck coefficient of SnTe is largely enhanced by large band effective mass or decrease of energy separation through synergistic effect including resonance level and band convergence.

The peak zT value of 1.1 has achieved for Pb0.995Sb0.005Te alloy at 723 K, which is comparable with the Sb doped PbTe alloys with higher doping concentration.

SiC is firstly introduced into SnTe. The created lattice mismatch and interfaces via hand milling are responsible for the enhanced zT, which is comparable with doped samples. Besides, the hardness of samples is got improved with SiC compositing.

No abstract

No abstract