Thermoelectric properties of SiGe whiskers with various morphology

Anatoly Druzhinin; Ihor Ostrovskii; Natalia Liakh-Kaguy; Tomasz Zyska; Azhar Tuleshova; Maksabek Satymbekov; Aigul Iskakova

doi:10.1117/12.2280895

7 August 2017 Thermoelectric properties of SiGe whiskers with various morphology

Anatoly Druzhinin, Ihor Ostrovskii, Natalia Liakh-Kaguy, Tomasz Zyska, Azhar Tuleshova, Maksabek Satymbekov, Aigul Iskakova

Author Affiliations +

Proceedings Volume 10445, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2017; 1044556 (2017) https://doi.org/10.1117/12.2280895
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2017, 2017, Wilga, Poland

Abstract

Thermoelectric properties of Si_1-xGe_x (x = 0.03) solid solution whiskers doped with B impurities to the concentrations 10¹⁷ – 10¹⁹ cm^-3 were studied in temperature range 300 - 420K. An influence of the whisker morphology, in particular their diameters and obliquity, on Seebeck coefficient, thermal conductivity and resistance was investigated. Seebeck coefficient and resistance was shown to increase, while thermal conductivity to decrease when the whisker diameter drops from 100 to 10μm, that is accompanied by a rise of figure of merit (up to 0,12 at 300K). Use of the whiskers with large obliquity leads to a small rise (of about 10 – 15%) increase of their Seebeck coefficient.

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Anatoly Druzhinin, Ihor Ostrovskii, Natalia Liakh-Kaguy, Tomasz Zyska, Azhar Tuleshova, Maksabek Satymbekov, and Aigul Iskakova "Thermoelectric properties of SiGe whiskers with various morphology", Proc. SPIE 10445, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2017, 1044556 (7 August 2017); https://doi.org/10.1117/12.2280895

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