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Design and evaluation of n-type Si1-xGex as a thermoelectric-conversion material

  • Tomohiro Imai (a1), Tsutomu Iida (a2), Yuki Miyata (a3), Takashi Itoh (a2), Hiroki Funashima (a1), Yoshifumi Takanashi (a3) and Noriaki Hamada (a4)...

Abstract

Si1-xGex alloys show the high power generating efficiency as a thermoelectric- conversion material. We evaluate the thermoelectric power of the n-type SiGe system on the basis of the first principles calculations. The electronic-band-structure calculation is performed using all-electron full-potential linearized augmented-plane-wave (FLAPW) method within the local density approximation (LDA). The Seebeck coefficient is analyzed by the Bloch-Boltzmann equation. We find that the ordered rhombohedral SiGe has high Seebeck coefficient in comparison with zincblende SiGe. The efficiency of the thermoelectric power in Si1-xGex is gained by the local atomic configuration rather than the Ge concentration.

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1. Stohr, H. and Klemm, W., Z. Anorg. Allgem. Chem. 241, 305 (1954).
2. Schaffler, F., in Properties of Advanced SemiconductorMaterials GaN, AlN, InN, BN, SiC, SiGe. Eds. Levinshtein, M.E., Rumyantsev, S.L., Shur, M.S., John Wiley & Sons, Inc., New York, 2001, 149188.
3. Vosko, S. H., Wilk, L. and Nusair, M., Can. J. Phys. 58, 1200 (1980).
4. Painter, G. S., Phys. Rev. B 24, 4264 (1981).
5. Anderson, O. K., Phys. Rev. B 12, 3060 (1975).
6. Takeda, T. and Kübler, J., J. Phys. F 9, 661 (1979).
7. Dismukes, J. P., Ekstrom, L., and Paff, R.J., J. Phys. Chem. 68, 3021 (1964)
8. Ourmazd, A. and Bean, J. C., Phys. Rev. Lett. 55, 765 (1985)
9. LeGoues, F. K., Kesan, V. P., and Iyer, S. S., Phys. Rev. Lett. 64, 40 (1990)
10. Araki, T., Fujimura, N., Ito, T., Wakahara, A., Sasaki, A., J. Appl. Phys. 80, 3804 (1996)
11. Braunstein, R., Moore, A. R., and Herman, F., Phys. Rev. 109, 695 (1958)
12. Weber, J. and Alonso, M.I., Phys. Rev. B 40, 5683 (1989)

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Design and evaluation of n-type Si1-xGex as a thermoelectric-conversion material

  • Tomohiro Imai (a1), Tsutomu Iida (a2), Yuki Miyata (a3), Takashi Itoh (a2), Hiroki Funashima (a1), Yoshifumi Takanashi (a3) and Noriaki Hamada (a4)...

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