High-thermoelectric performance of nanostructured bismuth antimony telluride bulk alloys.

  title={High-thermoelectric performance of nanostructured bismuth antimony telluride bulk alloys.},
  author={Bed Poudel and Qing Hao and Yi Ma and Yucheng Lan and Austin J Minnich and Bo Yu and Xiao Yi Yan and Dezhi Wang and Andrew Muto and Daryoosh Vashaee and Xiaoyuan Chen and Junming Liu and Mildred S. Dresselhaus and Gang Chen and Zhifeng Ren},
  volume={320 5876},
The dimensionless thermoelectric figure of merit (ZT) in bismuth antimony telluride (BiSbTe) bulk alloys has remained around 1 for more than 50 years. We show that a peak ZT of 1.4 at 100 degrees C can be achieved in a p-type nanocrystalline BiSbTe bulk alloy. These nanocrystalline bulk materials were made by hot pressing nanopowders that were ball-milled from crystalline ingots under inert conditions. Electrical transport measurements, coupled with microstructure studies and modeling, show… CONTINUE READING
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