摘要
Functional gradient materials （FGMs） in thermoelectric materials can raise the maximal power output of the thermoelectric generator （TEG）. We report an FGM of n-PbTe with continuous carrier concentration successfully prepared by a unidirectional solidification method. The continuous carrier concentration for n-Pb Te was optimized by different dopants of PbI2, Al and Zr and solidifying temperature. The effective maximum outputting power for continuous FGM PbTe is about 30% larger than that for jointed FGM PbTe.
Functional gradient materials （FGMs） in thermoelectric materials can raise the maximal power output of the thermoelectric generator （TEG）. We report an FGM of n-PbTe with continuous carrier concentration successfully prepared by a unidirectional solidification method. The continuous carrier concentration for n-Pb Te was optimized by different dopants of PbI2, Al and Zr and solidifying temperature. The effective maximum outputting power for continuous FGM PbTe is about 30% larger than that for jointed FGM PbTe.
