Improved Extruded Thermoelectric Materials
| Autor: | M. P. Volkov, I. A. Drabkin, L. B. Ershova, M. G. Lavrentev |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Thermoelectric cooling Materials science TEC chemistry.chemical_element 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology Condensed Matter Physics Thermoelectric materials 01 natural sciences Electronic Optical and Magnetic Materials Bismuth chemistry.chemical_compound chemistry Electrical resistivity and conductivity 0103 physical sciences Materials Chemistry Extrusion Bismuth telluride Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Journal of Electronic Materials. 49:2937-2942 |
| ISSN: | 1543-186X 0361-5235 |
| Popis: | Using improved extrusion technology for bismuth antimony tellurides, RMT has developed new extruded thermoelectric materials (TEM) with increased thermoelectric figure of merit (Z). The p-type materials exhibit maximum Z values of 3.28 × 10−3 K−1 to 3.32 × 10−3 K−1 in the electrical conductivity range from 900 Ω−1 cm−1 to 1100 Ω−1 cm−1. The corresponding Z values for the n-type materials lie in the similar range of 2.82 × 10−3 K−1 to 2.87 × 10−3 K−1. The wide variation of the electrical conductivity allows their application in miniature thermoelectric coolers (TEC) for cooling and temperature stabilization in the temperature range from 225 K to 350 K. Using the improved TEM, miniature TECs with pellet height of 0.3 mm were manufactured and tested; the test results showed that the maximum temperature difference was 2 K to 3 K higher while the energy consumption was 10% to 15% lower than for standard RMT miniature TEC. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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