Thermoelectric properties of the hot-pressed (Bi,Sb){sub 2}(Te,Se){sub 3} alloys
Thermoelectric properties of the (Bi,Sb){sub 2}Te{sub 3} and Bi{sub 2}(Te,Se){sub 3} single crystals were well characterized for the whole composition range of the Bi{sub 2}Te{sub 3}-Sb{sub 2}Te{sub 3} and Bi{sub 2}Te{sub 3}-Bi{sub 2}Se{sub 3} systems. However, the same work has been seldom conducted for the hot-pressed alloys. Thermoelectric properties of the hot-pressed (Bi,Sb){sub 2}Te{sub 3} and Bi{sub 2}(Te,Se){sub 3} alloys have been investigated mainly at the compositions of (Bi{sub 0.25}Sb{sub 0.75}){sub 2}Te{sub 3} and Bi{sub 2}(Te{sub 0.95}Se{sub 0.05}){sub 3} where the maximum figure-of-merits of p-type and n-type, respectively, were obtained for the single crystals with doping. In this study, thermoelectric properties of the hot-pressed (Bi,Sb){sub 2}(Te,Se){sub 3} alloys, prepared by powder metallurgy such as melting/grinding and mechanical alloying, were measured at room temperature and compared with the characteristics of the single crystals grown by the Bridgman technique for a wide range of compositions of the alloys.
- Research Organization:
- Hong Ik Univ., Seoul (KR)
- OSTI ID:
- 20075952
- Journal Information:
- Scripta Materialia, Vol. 42, Issue 9; Other Information: PBD: Apr 2000; ISSN 1359-6462
- Country of Publication:
- United States
- Language:
- English
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