Abstract:

n-PbTe with continuous carrier concentration gradient as a functional graded material (FGM) was successfully solidified along the unidirectional temperature grade. The carrier concentration gradient was optimized by different dopants of PbI₂,Al and Zr and solidifying temperature grade. The  effective maximum output power for continuous FGM PbTe is near 30％ larger than that for jointed FGM PbTe with the same carrier concentration.

Key words: functional graded material (FGM), carrier concentration; , PbTe, effective output power