| Abstract Scope |
In recent years, Germanium-tellurides (GeTe) alloys were viewed as promising thermoelectric materials. Due to the presence of Ge vacancies, GeTe featured with high carrier concentration, high electrical conductivity and high thermal conductivity. With the incorporation of minor amount of group-IB group-VA and elements, both the carrier concentration and thermal conductivity can be effectively reduced, yielding a high thermoelectric figure-of-merit zT. Specially, the optimization counts on an equilibrium phase diagram, which offers a new avenue toward high-performance TE materials. |