Min, Bongki Lim, Sang-Soon Jung, Sung-Jin Kim, Gareoung Lee, Byeong hyeon Won, Sung Ok Kim, Seong Keun Rhyee, Jong-Soo Kim, Jin-Sang Baek, Seung-Hyub 2024-01-19T21:33:55Z 2024-01-19T21:33:55Z 2021-09-05 2018-10 0925-8388 https://pubs.kist.re.kr/handle/201004/120845 The electrical resistance of a thermoelectric module is an important parameter as well as the thermoelectric figure-of-merit for the application of both waste energy harvesters and solid-state cooling devices. High resistance causes energy dissipation through Joule heating, leading to the degradation of the device's generating or cooling performance. Therefore, it is highly desirable to reduce the electric resistivity of the thermoelectric materials. Here, we report a hot extrusion technique to fabricate p-type bismuth antimony tellurides that has low electrical resistivity. Extrusion is a promising tool to fabricate a fiber-like texture of the microstructure, where the 001 normal vector of grains is pointing perpendicular to the extrusion direction. Such a textured microstructure can enhance the mobility of electrical carriers along the extrusion direction due to the anisotropic nature of electrical transport in bismuth telluride-based alloys. Beyond bismuth telluride-based thermoelectric materials, we believe that our result will offer a simple tool to manipulate physical properties of any two-dimensional, layered materials by controlling microstructure. (C) 2018 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA Texture-induced reduction in electrical resistivity of p-type (Bi,Sb)(2)Te-3 by a hot extrusion Article 10.1016/j.jallcom.2018.06.026 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.764, pp.261 - 266 JOURNAL OF ALLOYS AND COMPOUNDS 764 261 266 N scie scopus 000444058300031 2-s2.0-85048540066 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article THERMOELECTRIC PROPERTIES PERFORMANCE ALLOYS Thermoelectric Extrusion Resistivity Bismuth antimony telluride Mobility