[18a-C301-1~9] CS.11 Code-sharing Session of 9.4 & M

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)English Presentation

[18a-C301-9] Investigation of p-type thermoelectric properties for Mn doped β-FeSi₂

〇(M2)Umar Farooq¹, Sopheap Sam², Rio Oshita¹, Hiroshi Nakatsugawa¹ (1.Yokohama Nat Univ, 2.Nat Inst for Mat Sci)

Keywords:

Semiconductor,Thermoelectricity,Mn doping

Our research study deals with the substitution of Manganese doping in Iron Silicides to improve its ZT. For all Mn doped samples, the Seebeck coefficient S is positive indicating that all Mn doping contributed to the p-type nature of FeSi₂. Furthermore, Mn doping also contributed to the reduction of bipolar effect as compared to non-doped FeSi₂. The carrier concentration effect was dominant until Fe_0.95Mn_0.05Si₂ while the effect of effective mass gets dominant from Fe_0.96Mn_0.04Si₂. The maximum Power factor PF was availed for Fe_0.97Mn_0.03Si₂ sample because of which the maximum ZT that is achieved during this research study is also for Fe_0.97Mn_0.03Si₂.