Thermoelectric properties of compacted Bi_2-xSb_xTe₃ nanoplatelets with nominal composition of x = 1.5

Category: Transient Plane Source

Author(s): Chia-Jyi Liu, Gao-Jhih Liu, Liang-Ru Chen, Yen-Liang Liu

Keywords: bismuth antimony tellurides, hydrothermal synthesis, nanostructured bulk, Thermal Conductivity, Thermoelectric, Thermopower, Transient plane source (TPS) techniques

Abstract: Hydrothermal methods were used to synthesize nanoplatelets of Bi_2-xSb_xTe₃. In this article, the electrical conductivity, thermopower, and thermal conductivity were the temperature-dependent transport parameters that were determined to calculate the dimensionless figure of merit, ZT. The thermal conductivity measurements were carried out using the transient plane source (TPS) technique with the thermal constants analyzer. The alloy had a low thermal conductivity of 0.37 W/mK, which was low compared to the (Bi,Sb)2Te3 alloys that were fabricated using other methods. This could be attributed to the nanostructured nature of the compacted Bi_2-xSb_xTe₃.

Reference: AIP Conference Proceedings (2013), 1449

DOI: 10.1063/1.4731507

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