[17p-C301-1~11] 9.4 Thermoelectric conversion

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[17p-C301-7] Preparation of Fe-Doped Ge Clathrates and Investigation of their Thermoelectric Properties

〇(M1)Yuhi Kimura¹, Katsuaki Hashikuni², Hiroaki Anno¹ (1.Sanyo-Onoda City Univ., 2.Kyushu Univ.)

Keywords:

thermoelectric conversion,clathrate,thermoelectric properties

In this study, Fe-substituted samples were prepared for Ba₈Ga₁₆Ge₃₀ clathrate and their thermoelectric properties were investigated to search for the possibility of new element substitution. In Fe-substituted samples, the electrical conductivity increased and the Seebeck coefficient decreased, but the effective mass increased, compared with Ba₈Ga₁₆Ge₃₀. It is suggested that the thermoelectric performance will be enhanced if the carrier concentration can be decreased by fixing the amount of Fe substitution with the increased effective mass and by controlling the Ga/Ge ratio.