|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications V
||Thermoelectric Properties of PbTe-based Materials Fabricated by a Melt Spinning Method
||Preeyakarn Eaksuwanchai, Ken Kurosaki, Michihiro Ohta, Priyanka Jood, Yuji Ohishi, Hiroaki Muta, Shinsuke Yamanaka
|On-Site Speaker (Planned)
PbTe-based materials are well known as high performance thermoelectric materials because they have large Seebeck coefficient (<I>S</I>) and moderately low lattice thermal conductivity (κ<SUB>lat</SUB>). However, due to the bipolar conduction, the <I>S</I> decreases and the κ<SUB>lat</SUB> increases at high temperatures, which greatly decreases the <I>zT</I>. Here, we prepared <I>M</I>Te-PbTe nanocomposites, one example of <I>M</I> is Mg, by a melt-spinning method to suppress the bipolar conduction based on the minority carrier scattering concept. The size and the distribution of <I>M</I>Te in the PbTe matrix were controlled by changing mainly the cooling rate of the melt spinning. The microstructure and the thermoelectric properties of the <I>M</I>Te-PbTe nanocomposites will be presented.
||Planned: Supplemental Proceedings volume