Synthesis and electrical properties of Bi{sub 2}Te{sub 3}-based thermoelectric materials doped with Er, Tm, Yb, and Lu

Journal Article · Thu Jun 15 00:00:00 EDT 2017 · Semiconductors

DOI:https://doi.org/10.1134/S106378261706029X· OSTI ID:22756500

Lyubushkin, R. A.; Soklakova, O. N.; Ivanov, O. N. ^[1]

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1. Belgorod National Research University (Russian Federation)

Nanopowders of Bi{sub 2}Te{sub 3} and R{sub 0.1}Bi{sub 1.9}Te{sub 3} (where R = Er, Tm, Yb, Lu) are obtained by microwave solvothermal synthesis. The powder-like materials are compacted by cold isostatic compression followed by annealing in argon. The influence of the doping agent on the structure and characteristics of the derived materials are investigated. It is demonstrated that the introduction of rare-earth elements (2 at %) into the bismuth-telluride lattice leads to a decrease in the electrical resistivity and to an increase in the Seebeck coefficient. The best thermoelectric properties are obtained for the sample of bismuth telluride doped with thulium.

• OSTI ID: 22756500
• Journal Information: Semiconductors, Vol. 51, Issue 6; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH TELLURIDES
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
HYDROTHERMAL SYNTHESIS
MICROWAVE RADIATION
THERMOELECTRIC MATERIALS
THERMOELECTRIC PROPERTIES