Category: Transient Plane Source
Keywords: EDS, Energy Dispersive Spectroscopy, Energy Dispersive Spectroscopy (EDS), Figure of Merit, Figure of Merit (ZT), Hydrothermal Methods, ICP-AES, Inductively Coupled Plasma-Atomic Emission Spectrometer, Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES), Materials, Nanovoltmeter, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), Seebeck Voltage, SEM, TE, TEM, Thermal Conductivity, Thermoelectric, Thermoelectric (TE) Materials, Transmission electron microscopy, Transmission electron microscopy (TEM), van der Pauw Method, X-ray Diffraction, X-ray diffraction (XRD), XRD, ZT
Abstract: A series of Bi(2-x)Sb(x)Te3 powders were prepared via hydrothermal methods by varying x (x=1.45, 1.50, 1.55, 1.56). These powders were then heavily characterized by XRD, EDS, ICP-AES, TEM, SEM and the TPS technique. A low thermal conductivity was desired, so as to give the highest thermoelectric figure of merit (ZT). It was determined that the highest figure of merit was obtained when x=1.55, which resulted in a value of 1.65 at 290 K.
Reference: Journal of Materials Chemistry, 22, 11 (2012) 4825-4831