High Temperature Transport Properties of Tetrahedrite Cu_12−xM_xSb_4−yTe_yS₁₃ (M = Zn, Ni) Compounds

Yohan Bouyrie (1) , Christophe Candolfi (1) , Jean-Baptiste Vaney (1) , Anne Dauscher (1) , Bertrand Lenoir (1)

1 IJL - Institut Jean Lamour

Natural and synthetic tetrahedrites are currently the focus of attention in thermoelectricity due to their abundance, numerous possibilities of substitution, and their complex crystal structure (I-43m) resulting in extremely low lattice thermal conductivity (below 1 W m⁻¹ K⁻¹ above 300 K). Here, we report on the synthesis, structural and chemical characterizations, and high-temperature thermoelectric properties of polycrystalline Cu_12−xM_xSb_4−yTe_yS₁₃ (M = Zn, Ni) tetrahedrites. Upon substituting on both the Cu and Sb sites, we successfully improved the thermoelectric properties with respect to the ternary compound Cu₁₂Sb₄S₁₃ with peak ZT values of 0.7 at 700 K.

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Chimie inorganique; Matériaux

Yohan Bouyrie, Christophe Candolfi, Jean-Baptiste Vaney, Anne Dauscher, Bertrand Lenoir. High Temperature Transport Properties of Tetrahedrite Cu_12−xM_xSb_4−yTe_yS₁₃ (M = Zn, Ni) Compounds. Journal of Electronic Materials, 2016, 45 (3), pp.1601-1605. ⟨10.1007/s11664-015-4128-3⟩. ⟨hal-01299691⟩