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Thermoelectric performance of n-Type (PbTe)0.75(PbS)0.15(PbSe)0.1 composites
Australian Institute for Innovative Materials - Papers
  • Sima Aminorroaya Yamini, University of Wollongong
  • Heng Wang, California Institute of Technology
  • Dianta Ginting, University of Wollongong
  • David R. G Mitchell, University of Wollongong
  • S X Dou, University of Wollongong
  • G. Jeffrey Snyder, California Institute of Technology
RIS ID
92200
Publication Date
1-1-2014
Publication Details

Yamini, S. Aminorroaya., Wang, H., Ginting, D., Mitchell, D. R. G., Dou, S. Xue. & Snyder, G. Jeffrey. (2014). Thermoelectric performance of n-Type (PbTe)0.75(PbS)0.15(PbSe)0.1 composites. ACS Applied Materials and Interfaces, 6 (14), 11476-11483.

Abstract
Lead chalcogenides (PbQ, Q = Te, Se, S) have proved to possess high thermoelectric efficiency for both n-type and p-type compounds. Recent success in tuning of electronic band structure, including manipulating the band gap, multiple bands, or introducing resonant states, has led to a significant improvement in the thermoelectric performance of p-type lead chalcogenides compared to the n-type ones. Here, the n-type quaternary composites of (PbTe)0.75(PbS)0.15(PbSe)0.1 are studied to evaluate the effects of nanostructuring on lattice thermal conductivity, carrier mobility, and effective mass variation. The results are compared with the similar ternary systems of (PbTe)1-x(PbSe)x, (PbSe) 1-x(PbS)x, and (PbS)1-x(PbTe)x. The reduction in the lattice thermal conductivity owing to phonon scattering at the defects and interfaces was found to be compensated by reduced carrier mobility. This results in a maximum figure of merit, zT, of ∼1.1 at 800 K similar to the performance of the single phase alloys of PbTe, PbSe, and (PbTe) 1-x(PbSe)x.
Grant Number
ARC/DE130100310
Citation Information
Sima Aminorroaya Yamini, Heng Wang, Dianta Ginting, David R. G Mitchell, et al.. "Thermoelectric performance of n-Type (PbTe)0.75(PbS)0.15(PbSe)0.1 composites" (2014) p. 11476 - 11483
Available at: http://works.bepress.com/sxdou/606/