Abstract

In article number 2005612, Pai-Chun Wei, Hsin-Jay Wu, and co-workers leverage the interplay between the spinodal decomposition and athermal phase transition in GeTe-based thermoelectric materials. The exquisite microstructure, featured by strong composition fluctuations and the coexistence of rhombohedral- and cubic-GeTe, yield high zT values of >2.6. This work provides a new thermodynamic route to developing higher-performance thermoelectric materials in general.

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