“…Assuming relaxation time, τ = 10 −15 s, a maximum power factor (PF) was calculated of 21, 23, 22, 11, and 15 µW/K 2 cm for CoVSn (at 0.26 p-type doping), CoNbSn (at 0.21 p-type doping), CoTaSn (at 0.23 p-type doping), CoMoIn (at 0.03 p-type doping), and CoWIn (at 0.03 p-type doping), respectively 14 . To establish the thermoelectric potential of any material, it is of key importance to evaluate the efficiency of a TE material given by the dimensionless figure of merit ZT = S 2 σT/κ (κ = κ e + κ l ), where S is Seebeck coefficient, σ is electrical conductivity, and κ is thermal conductivity comprising of electronic and lattice contributions [15][16][17][18] . Here we calculate the thermal conductivity, and thereby determine ZT, of p-type doped CoVSn, CoNbSn, CoTaSn, CoMoIn, and CoWIn combining a firstprinciples approach with semi-classical Boltzmann transport theory.…”