| Autor: |
Lukyanova, Lidia N., Kutasov, Vsevolod A., Konstantinov, Piotr P., Popov, Valeri V. |
| Zdroj: |
Advances in Science and Technology; October 2010, Vol. 74 Issue: 1 p77-82, 6p |
| Abstrakt: |
Thermoelectric and galvanomagnetic properties for solid solution based on bismuth and antimony chalcogenides were studied for the optimal compositions and carrier concentrations in the temperature interval 100-240 K. Galvanomagnetic properties were analyzed in the framework of the many–valley energy spectrum model with isotropic and anisotropic scattering of charge carries. The figure-of-merit is shown to be determined with optimal relations between the values of the density-of-states effective mass, the carrier mobility taking into account degeneration of charge carriers, and the lattice thermal conductivity. The figure-of-merit also depends on anisotropy of the constant energy surface and scattering mechanism. Average values of the figure-of-merit through the temperature interval 100-240 K are equal to (2.5-2.65) 10-3 K1 for optimal compositions and carrier concentrations. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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