Category: Transient Plane Source
Author(s): Josh Whaley, Karla R. Reyes-Gil, Nancy Yang, Ryan Nishimoto
Keywords: automotive waste, Bi2Te3 B alloys, characterization, characterization techniques, Contact resistance, environmental, figure of merit (ZT value), heating and cooling applications, Sandia National Laboratories (SNL), Seebeck coefficient, Temperature, Thermal Conductivity, thermal resistivity, thermoelectric generators, Transient plane source (TPS), Transient plane source (TPS) method, transport properties measurements
Abstract: Thermoelectric (TE) generators have very important applications, such as emerging automotive waste heat recovery and cooling applications. This study investigates how thermal conductivity, seebeck coefficient, and resistivity of bismuth telluride changes with increasing isothermal aging. The thermal conductivity was tested with the Transient Plane Source (TPS) method. Both bismuth telluride n and p type were tested for 2 wk, 8 wk, 6 mo, 1 yr, and 2 yr of isothermal aging at 240 degrees Celsius. The thermal conductivity was observed to increase with longer thermal aging.
Reference: MRS Proceedings, 1774 (2015) 7-12
DOI: 10.1557/opl.2015.578