[16p-WL2_401-1~15] 9.4 Thermoelectric conversion

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-WL2_401-7] zT spatial distribution within a single powder-sintered BiTe bulk material by TDIS method

〇Hitoyuki Sato¹, Yasuhiro Hasegawa¹ (1.Saitama Univ.)

Keywords:

thermoelectrics,TDIS method

The time-domain impedance spectroscopy (TDIS) method is a measurement technique that enables evaluation of the thermoelectric figure of merit, zT, within a single sample by measuring the thermoelectric resistance arising from Peltier heat transport together with the ohmic resistance. In this study, the spatial distribution of zT along the longitudinal direction (5 mm) of an n-type Bi–Te bulk sample was evaluated at 300 K using the TDIS method, and the zT values were found to range from 0.413 to 0.447.