Band engineering and precipitation enhance thermoelectric performance of SnTe with Zn-doping

Chen Zhiyu¹, Wang Ruifeng^{2, 3}, Wang Guoyu^{2, 3}, Zhou Xiaoyuan⁴, Wang Zhengshang¹, Yin Cong¹, Hu Qing¹, Zhou Binqiang⁵, Tang Jun^{1, 6, ‡}, Ang Ran^{1, 6, †}

(color online) (a) Temperature-dependent dimensionless figure of merit zT for all samples. (b) Schematic diagram of band structure and schematic illustration of phonon scattering by precipitates embedded in a matrix derived from SEM images.