Artificially atomic-scale ordered superlattice alloys for thermoelectric applications

S. Cho, Y. Kim, A. DiVenere, G. K L Wong, Arthur J Freeman, J. B. Ketterson, L. J. Olafsen, I. Vurgaftman, J. R. Meyer, C. A. Hoffman, G. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report artificially atomic-scale ordered superlattice alloy systems, new scheme to pursue high-zt materials. We have fabricated Bi/Sb superlattice alloys that are artificially ordered on the atomic scale using MBE, confirmed by the presence of XRD superlattice satellites. We have observed that the electronic structure can be modified from semimetal, through zero-gap, to semiconductor by changing the superlattice period and sublayer thicknesses using electrical resistivity, thermopower, and magneto-transport measurements. InSb/Bi superlattice alloys have also been prepared and studied using XRD and thermopower measurements, which shows that their thermoelectric transport properties can be modified in accordance with structural modification. This superlattice alloy scheme gives us one more tool to control and tune the electronic structure and consequently the thermoelectric properties.

Original languageEnglish
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
Volume4
Publication statusPublished - 2001
EventIEEE International Symposium on Circuits and Systems (ISCAS 2001) - Sydney, NSW, Australia
Duration: May 6 2001May 9 2001

Other

OtherIEEE International Symposium on Circuits and Systems (ISCAS 2001)
CountryAustralia
CitySydney, NSW
Period5/6/015/9/01

Fingerprint

Thermoelectric power
Electronic structure
Metalloids
Molecular beam epitaxy
Transport properties
Satellites
Semiconductor materials

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Cho, S., Kim, Y., DiVenere, A., Wong, G. K. L., Freeman, A. J., Ketterson, J. B., ... Chen, G. (2001). Artificially atomic-scale ordered superlattice alloys for thermoelectric applications. In Proceedings - IEEE International Symposium on Circuits and Systems (Vol. 4)

Artificially atomic-scale ordered superlattice alloys for thermoelectric applications. / Cho, S.; Kim, Y.; DiVenere, A.; Wong, G. K L; Freeman, Arthur J; Ketterson, J. B.; Olafsen, L. J.; Vurgaftman, I.; Meyer, J. R.; Hoffman, C. A.; Chen, G.

Proceedings - IEEE International Symposium on Circuits and Systems. Vol. 4 2001.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cho, S, Kim, Y, DiVenere, A, Wong, GKL, Freeman, AJ, Ketterson, JB, Olafsen, LJ, Vurgaftman, I, Meyer, JR, Hoffman, CA & Chen, G 2001, Artificially atomic-scale ordered superlattice alloys for thermoelectric applications. in Proceedings - IEEE International Symposium on Circuits and Systems. vol. 4, IEEE International Symposium on Circuits and Systems (ISCAS 2001), Sydney, NSW, Australia, 5/6/01.
Cho S, Kim Y, DiVenere A, Wong GKL, Freeman AJ, Ketterson JB et al. Artificially atomic-scale ordered superlattice alloys for thermoelectric applications. In Proceedings - IEEE International Symposium on Circuits and Systems. Vol. 4. 2001
Cho, S. ; Kim, Y. ; DiVenere, A. ; Wong, G. K L ; Freeman, Arthur J ; Ketterson, J. B. ; Olafsen, L. J. ; Vurgaftman, I. ; Meyer, J. R. ; Hoffman, C. A. ; Chen, G. / Artificially atomic-scale ordered superlattice alloys for thermoelectric applications. Proceedings - IEEE International Symposium on Circuits and Systems. Vol. 4 2001.
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AU - Olafsen, L. J.

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