1992-08-03

Search for New High Temperature Thermoelectric Materials 929424

Although important efforts are actually devoted to improve Si-Ge materials, their thermoelectric energy conversion efficiency remains relatively low and the adimensional ZT value does not exceed 1. Higher values can be obtained by investigating new materials. A search for new high temperature thermoelectric materials identified a certain number of compounds between transition metals and bismuth, antimony and germanium as potential candidates. Results of the preliminary synthesis of samples by a variety of techniques (Bridgman, mechanical alloying…) are presented as well as some electrical measurements. Some compounds showed interesting properties and need to be investigated in more details.

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