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Chinese Journal of High Pressure Physics  > 2012  >  26(2): 141-147.
ZHANG Xiang-Guo, MU Xin, ZHANG Zeng-Ming, DING Ze-Jun. Thermoelectric Properties of Nanoparticle PbTe under Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 2012, 26(2): 141-147. doi: 10.11858/gywlxb.2012.02.004
Citation: ZHANG Xiang-Guo, MU Xin, ZHANG Zeng-Ming, DING Ze-Jun. Thermoelectric Properties of Nanoparticle PbTe under Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 2012, 26(2): 141-147. doi: 10.11858/gywlxb.2012.02.004
shu

Thermoelectric Properties of Nanoparticle PbTe under Hydrostatic Pressure

doi: 10.11858/gywlxb.2012.02.004
  • 1.

    National Laboratory for Physical Sciences at Microscaleand Department of Physics, University of Science and Technology of China, Hefei 230026, China;

  • 2.

    The Centre of Physical Experiments, School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China

  • Received Date: 30 Sep 2010
  • Rev Recd Date: 26 May 2011
  • Issue Publish Date: 15 Apr 2012
    Abstract
  • The thermoelectric properties of PbTe nanoparticles were studied from ambient pressure to 0.8 GPa by using self-built set-up. The electrical conductivity increased while Seebeck coefficient decreased with loading pressure and these properties can be recovered after pressure released. Moreover, Seebeck coefficient is extremely high, up to 565 V/K at ambient pressure. At 0.8 GPa, the electrical conductivity enhances four times, the power factor adds three times and Seebeck coefficient is only reduced by 20% comparing with those at ambient pressure. These results indicate that high pressure can improve the thermoelectric properties of PbTe nanoparticle. The contracted Femi-energy is also calculated based on the First Principle under high pressure from 0.4 to 4.0 GPa. The calculated values agree well with experimental data.

     

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