Rapid synthesis and thermoelectric properties of In0.1Co4sb11Te0.8Ge0.2 alloys via high temperature and high pressure

In0.1Co4sb11Te0.8Ge0.2 skutterudite alloys were synthesized by high temperature and high pressure (HTHP) method, and the effect of the In filling and Te, Ge co-doping atoms on thermoelectric properties was investigated under different pressures. The synthetic time was sharply reduced from a few days to 30 min. A fairly good ZT value of 1.12 at 773 K was obtained due to both the remarkably enhanced power factor and the low thermal conductivity.