Realized high power factor and thermoelectric performance in Cu2SnSe3. (15th January 2019) - Zhang, J.
Abstract: New thermoelectric compounds Cu2 Sn1− x Fe x Se3 (0 ≤ x ≤ 0.2) have been investigated, and the results indicate that the electrical conductivity of Cu2 Sn1− x Fe x Se3 ( x > 0) is obviously enhanced by Fe doping due to the increased carriers concentration, and then the significant improved power factor is obtained. As a result, the figure of merit reaches 1.1 at ~820 K for Fe-doped compounds Cu2 Sn1− x Fe x Se3 with x = 0.05 and 0.1 due to the higher power factor and moderate thermal conductivity, which is about 2.4 times that of pure Cu2 SnSe3 at the same temperature. Our results indicate that Fe-doped compounds Cu2 Sn1− x Fe x Se3 can be hoped to utilize as a potential environmental thermoelectric materials. Graphical abstract: Unlabelled Image