Synthesis and Thermolelectric Properties of Bi2Te3-GeTe Pseudo Binary System |
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| Journal | Advances in Science and Technology (Volume 46) |
|---|---|
| Volume | Mass and Charge Transport in Inorganic Materials III |
| Edited by | P. VINCENZINI and V. BUSCAGLIA |
| Pages | 168-173 |
| DOI | 10.4028/www.scientific.net/AST.46.168 |
| Citation | Hitoshi Kohri et al., 2006, Advances in Science and Technology, 46, 168 |
| Online since | October, 2006 |
| Authors | Hitoshi Kohri, Ichiro Shiota, Masahiko Kato, Isao J. Ohsugi, Takashi Goto |
| Keywords | Germanium Telluride, Layer Structure, Tetradymite, Thermoelectric Material |
| Abstract | Bi2Te3 is the best compound for thermoelectric materials around the room temperature. If the temperature range is shifted to higher side, it is useful to obtain electrical energy from waste heat source which is abundant at the temperature around 500 K. In this experiment, Bi2Te3-GeTe pseudo binary compounds were investigated to shift the temperature range. The lattice thermal conductivity was remarkably decreased at 50 or 75 mol%GeTe by synergy effect of solid solution and grain boundaries. The peak temperature of figure of merit Z for Bi2Te3-GeTe pseudo binary compounds was higher than Bi2Te3. |
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