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Advanced Materials

Ultrahigh Thermoelectric Performance by Electron and Phonon Critical Scattering in Cu2Se1-xIx

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Abstract

Iodine-doped Cu2Se shows a significantly improved thermoelectric performance during phase transitions by electron and phonon critical scattering, leading to a dramatic increase in zT by a factor of 3–7 times culminating in zT values of 2.3 at 400 K.

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