Doping-dependent thermopower of PbTe from Boltzmann transport calculations

Journal Article · Thu May 27 04:00:00 EDT 2010 · Phys. Rev. B

DOI:https://doi.org/10.1103/PhysRevB.81.195217· OSTI ID:1065411

Singh, David J. ^[1]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

The thermopower of PbTe as a function of temperature and doping level is reported based on Boltzmann transport calculations using the first principles relativistic electronic structure as obtained with the Engel-Vosko generalized gradient approximation. The results are discussed in relation to experimental data. For p-type material there is an enhancement at high-doping levels due to the onset of an increased density of states starting ~0.2 eV below the valence band edge. This leads to agreement between the calculated thermopower and recent results on PbTe with heavy Tl doping.

• Research Organization: Energy Frontier Research Centers (EFRC); Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
• Sponsoring Organization: USDOE SC Office of Basic Energy Sciences (SC-22)
• DOE Contract Number: SC0001299; SC0001299
• OSTI ID: 1065411
• Journal Information: Phys. Rev. B, Journal Name: Phys. Rev. B Journal Issue: 19 Vol. 81; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
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mechanical behavior
optics
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solar (thermal)
solid state lighting
spin dynamics
synthesis (novel materials)
synthesis (scalable processing)
synthesis (self-assembly)
thermal conductivity
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