TY - JOUR AU - Kostyuk, O. AU - Dzundza, B. AU - Maksymuk, M. AU - Bublik, V. AU - Chernyak, L. AU - Dashevsky, Z. PY - 2020/12/30 Y2 - 2024/03/28 TI - Development of Spark Plasma Syntering (SPS) technology for preparation of nanocrystalline p-type thermoelctrics based on (BiSb)2Te3: Array JF - Physics and Chemistry of Solid State JA - Phys. Chem. Sol. State VL - 21 IS - 4 SE - Scientific articles DO - 10.15330/pcss.21.4.628-634 UR - https://journals.pnu.edu.ua/index.php/pcss/article/view/4412 SP - 628-634 AB - <p>Bismuth antimony telluride is the most commonly used commercial thermoelectric material for power generation and refrigeration over the temperature range of 200–400 K. Improving the performance of these materials is a complected balance of optimizing thermoelectric properties. Decreasing the grain size of Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> significantly reduces the thermal conductivity due to the scattering phonons on the grain boundaries. In this work, it is shown the advances of spark plasma sintering (SPS) for the preparation of nanocrystalline <em>p</em>-type thermoelectrics based on Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> at different temperatures (240, 350, 400<sup>o</sup>C). The complex study of structural and thermoelectric properties of Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3 </sub>were presented. The high dimensionless thermoelectric figure of merit <em>ZT</em> ~ 1 or some more over 300–400 K temperature range for nanocrystalline<em> p</em>-type Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> was obtained.</p> ER -