Thermoelectric Properties of InSb Whiskers
| Authors | A.A. Druzhinin , I.P. Ostrovskii , Yu.M. Khoverko , N.S. Liakh-Kaguy |
| Affiliations |
Lviv Polytechnic National University, 12, S. Bandera St., 29013 Lviv, Ukraine |
| Е-mail | |
| Issue | Volume 12, Year 2020, Number 5 |
| Dates | Received 08 July 2020; revised manuscript received 15 October 2020; published online 25 October 2020 |
| Citation | A.A. Druzhinin, I.P. Ostrovskii, Yu.M. Khoverko, N.S. Liakh-Kaguy, J. Nano- Electron. Phys. 12 No 5, 05017 (2020) |
| DOI | https://doi.org/10.21272/jnep.12(5).05017 |
| PACS Number(s) | 72.20. |
| Keywords | Whiskers (3) , InSb, Thermo-emf, Thermal conductivity (3) , Figure of merit. |
| Annotation |
The article deals with studies of thermoelectric parameters of InSb whiskers with tin concentration of about 4.4·1018 cm – 3 in the temperature range 4.2-300 K. The resistance and Seebeck coefficient were measured experimentally. The InSb whiskers have shown rather high values of Seebeck coefficient exceeding the values of bulk materials by 2-3 times. Using a special method of heat transfer in the whisker joints, the thermal conductivity of the whisker was simulated. The obtained threshold on the temperature dependence of thermal conductivity for InSb whiskers and nanowires in the range of about 100 K connecting with phonon capture of charge carriers indicates high reliability of the data obtained. As a result, ZT parameter of InSb whiskers versus temperature in the temperature range 4.2-300 K was calculated. The obtained value of ZT parameter 0.15 at room temperature indicates a possibility of the whisker use for thermal converters design. |
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