Ultrahigh thermoelectric performance by electron and phonon critical scattering in Cu2 Se1-x Ix.

Liu, Huili; Yuan, Xun; Lu, Ping; Shi, Xun; Xu, Fangfang; He, Ying; Tang, Yunshan; Bai, Shengqiang et al. · Adv Mater · 2013

basic_science · Level V

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Abstract

Iodine-doped Cu2 Se 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.