High-Entropy Alloys (HEA) are emerging compositionally complex materials that show promise in structural and functional properties . Before the invention of HEAs, multi-element-alloy approach had been employed to improve the thermoelectric properties. One example was TAGS (Te-Sb-Ge-Ag) that showed a figure of merit near 1. Other examples have included half-Heusler and chalcogenide compounds . Some of these materials resembled HEAs. Since the discovery of high-entropy alloys in 2004, a new concept has emerged for the systematic exploration of crystal structure, lattice disorder, electronic structure, and microstructure in finding new thermoelectric alloys. This talk will highlight the recent development by providing specific examples and also looking into the future .
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