Synthesis and Transport Properties of In4(Se1−x Te x )3

Abstract

Polycrystalline samples of In 4 (Se 1Àx Te x ) 3 were synthesized by using a melting-quenching-annealing process. The thermoelectric performance of the samples was evaluated by measuring the transport properties from 290 K to 650 K after sintering using the spark plasma sintering (SPS) technique. The results indicate that Te substitution can effectively reduce the thermal conductivity while maintaining good electrical transport properties. In 4 Te 3 shows the lowest thermal conductivity of all compositions tested.