Thermal properties of high quality single crystals of bismuth telluride—Part II: Mixed-scattering model
| Autor: | Jean-Pierre Fleurial, H. Scherrer, S. Scherrer, L. Gailliard, R. Triboulet |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Condensed matter physics
Phonon scattering Chemistry Scattering Fermi level General Chemistry Condensed Matter Physics chemistry.chemical_compound symbols.namesake Effective mass (solid-state physics) Electrical resistivity and conductivity Thermoelectric effect symbols Figure of merit General Materials Science Bismuth telluride |
| Zdroj: | Journal of Physics and Chemistry of Solids. 49:1249-1257 |
| ISSN: | 0022-3697 |
| DOI: | 10.1016/0022-3697(88)90183-7 |
| Popis: | From the preceding experimental study on the thermoelectric properties of Bi2Te3, a mixedscattering model was used to fit the sharp variations of the various parameters with stoichiometric deviations. First a one-band model was developed: the Fermi level and the main scattering mechanism were determined and values for the Hall factor, the Lorenz number, the effective mass and the relaxation time constant found for both n- and p-type material. Using a two-band model permitted the fitting of the behaviour of the thermoelectric parameters in the vicinity of the change in type. The optimum Fermi level for the maximum of the figure of merit was found just at the bottom of the conduction band. |
| Databáze: | OpenAIRE |
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