TITLE

May quasicrystals be good thermoelectric materials?

AUTHOR(S)
Maciá, Enrique
PUB. DATE
November 2000
SOURCE
Applied Physics Letters;11/6/2000, Vol. 77 Issue 19
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present a theoretical analysis of quasicrystals (QCs) as potential thermoelectric materials. We consider a self-similar density of states model and extend the framework introduced in [G. D. Mahan and J. O. Sofo, Proc. Natl. Acad. Sci. U.S.A. 93, 7436 (1996)] to systems exhibiting correlated features in their electronic structure. We show that relatively high values of the thermoelectric figure of merit, ranging from 0.01 up to 1.6 at room temperature, may be expected for these systems. We compare our results with available experimental data on transport properties of QCs and suggest some potential candidates for thermoelectric applications. © 2000 American Institute of Physics.
ACCESSION #
4413237

 

Related Articles

  • Influence of dimensionality on thermoelectric device performance. Kim, Raseong; Datta, Supriyo; Lundstrom, Mark S. // Journal of Applied Physics;Feb2009, Vol. 105 Issue 3, pN.PAG 

    The role of dimensionality on the electronic performance of thermoelectric devices is clarified using the Landauer formalism, which shows that the thermoelectric coefficients are related to the transmission, T(E), and how the conducting channels, M(E), are distributed in energy. The Landauer...

  • Rigorous calculation of the Seebeck coefficient and mobility of thermoelectric materials. Ramu, Ashok T.; Cassels, Laura E.; Hackman, Nathan H.; Lu, Hong; Zide, Joshua M. O.; Bowers, John E. // Journal of Applied Physics;Apr2010, Vol. 107 Issue 8, p083707 

    The Seebeck coefficient of a typical thermoelectric material is calculated without recourse to the relaxation time approximation (RTA). To that end, the Boltzmann transport equation is solved in one spatial and two k-space coordinates by a generalization of the iterative technique first...

  • Efficient thermoelectric van der Pauw measurements. de Boor, Johannes; Schmidt, Volker // Applied Physics Letters;7/11/2011, Vol. 99 Issue 2, p022102 

    The development of powerful thermoelectric materials requires fast and simple characterization techniques. We combine three measurements to obtain a complete thermoelectric characterization. The electrical conductivity is measured by the van der Pauw method, while ZT is determined directly by...

  • Distribution of local Seebeck coefficient in M/T/M and M/T/M/T/M (M=Cu or Ni and T=Bi or Bi0.88Sb0.12) composite materials. Yamashita, Osamu; Odahara, Hirotaka // Journal of Applied Physics;6/15/2006, Vol. 99 Issue 12, p123721 

    The local Seebeck coefficient αl was measured at a step of 0.5 mm along the cylindrical M/T/M and M/T/M/T/M (M=Cu or Ni and T=Bi or Bi0.88Sb0.12) composites welded with T, using two thermocouples set at an interval of 2 mm, in order to investigate the reason why the resultant Seebeck...

  • Dynamic in situ observations of electrical and structural changes in thin thermoelectric (Bi0.15Sb0.85)2Te3 films. Bertram, Katrin; Stordeur, Matthias; Heyroth, Frank; Leipner, Hartmut S. // Journal of Applied Physics;Sep2009, Vol. 106 Issue 6, p063711-1 

    Thin films of (Bi0.15Sb0.85)2Te3 were prepared by dc magnetron sputter deposition on different substrates. It is well known that thermal treatment of as-deposited p-type (Bi0.15Sb0.85)2Te3 films leads to an enhancement of the power factor. Whereas up to now only the initial (as deposited) and...

  • Effect of substitutions on the thermoelectric figure of merit of half-Heusler phases at 800 °C. Culp, Slade R.; Poon, S. Joseph; Hickman, Nicoleta; Tritt, Terry M.; Blumm, J. // Applied Physics Letters;1/23/2006, Vol. 88 Issue 4, p042106 

    The merit of thermally stable MNiSn (M=Ti, Zr, Hf) half-Heusler phases, as n-type thermoelectric materials, for high-temperature power generation has been examined. Sb doping at the Sn site is shown to increase both the figure of merit, ZT, and the temperature at which ZT is maximized. The...

  • Thermoelectric properties of FeGa3-type narrow-bandgap intermetallic compounds Ru(Ga,In)3: Experimental and calculational studies. Takagiwa, Y.; Kitahara, K.; Matsubayashi, Y.; Kimura, K. // Journal of Applied Physics;Jun2012, Vol. 111 Issue 12, p123707 

    The thermoelectric properties of polycrystalline binary narrow-bandgap intermetallic RuGa3 and RuIn3 compounds have been investigated in the temperature range from 373 K to 973 K. These compounds exhibit semiconductor-like transport properties with large Seebeck coefficients of -560 μV/K and...

  • Correlation of local and global thermoelectric properties in laterally structured thermoelectric materials. Homm, G.; Gather, F.; Kronenberger, A.; Becker, M.; Meyer, B. K.; Klar, P. J.; Ziolkowski, P.; Müller, E. // AIP Conference Proceedings;6/26/2012, Vol. 1449 Issue 1, p389 

    Interfaces are a promising way to perturb or even block the propagation of phonons through a solid to reduce its thermal conductivity. Therefore, a better understanding of the influence of the interface-structure on the thermoelectric transport parameters is essential for improving the figure of...

  • Thermoelectric standardisation - Reference materials and characterisation. Ziolkowski, P.; Blaschkewitz, P.; Stiewe, C.; Karpinski, G.; Müller, E. // AIP Conference Proceedings;6/26/2012, Vol. 1449 Issue 1, p365 

    Thermoelectric materials for working temperatures between 300 K and 1000 K become continuously more important for energy recuperation applications. The efficiency is determined by the transport properties (electrical and thermal conductivity and Seebeck coefficient), which form the known...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics