Evolution of defect structures leading to high ZT in GeTe-based thermoelectric materials

• Published in: Nature communications Vol. 13; no. 1; pp. 6087 - 9
• Main Authors: Jiang, Yilin, Dong, Jinfeng, Zhuang, Hua-Lu, Yu, Jincheng, Su, Bin, Li, Hezhang, Pei, Jun, Sun, Fu-Hua, Zhou, Min, Hu, Haihua, Li, Jing-Wei, Han, Zhanran, Zhang, Bo-Ping, Mori, Takao, Li, Jing-Feng
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 14.10.2022; Nature Publishing Group; Nature Portfolio
• Subjects: 147/143; 639/301/1005/1007; 639/301/299/2736; Carrier mobility; Evolution; Figure of merit; Humanities and Social Sciences; Lattice vacancies; Lead free; Maximization; multidisciplinary; Optimization; Performance enhancement; Point defects; Power factor; Scattering; Science; Science (multidisciplinary); Synergistic effect; Thermal conductivity; Thermoelectric materials; Transport properties

GeTe is a promising mid-temperature thermoelectric compound but inevitably contains excessive Ge vacancies hindering its performance maximization. This work reveals that significant enhancement in the dimensionless figure of merit ( ZT ) could be realized by defect structure engineering from point d...