Thermoelectric Properties of Te Doped CoSb3 -4mol%Zn4 Sb3
Te doping effect on the thermoelectric properties of solid solution was investigated. 2at% Te doping was found to be most effective to improve the dimensionless figure of merit, ZT, of pseudo-binary CoSb3-4mol%Zn4Sb3. Maximum ZT of 0.69 was obtained at 450K in CoSb3- 4mol%Zn4Sb3 doped with 2at% Te. Heavy doping of Te above 3at% caused thermal conductivity to increase very high because of the formation of metallic CoSb2 phases and thus did not improve ZT.
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
K.W. Jang et al., "Thermoelectric Properties of Te Doped CoSb3 -4mol%Zn4 Sb3 ", Materials Science Forum, Vols. 510-511, pp. 1110-1113, 2006