Vacancy-induced dislocations within grains for high-performance PbSe thermoelectrics

• Published in: Nature communications Vol. 8; no. 1; p. 13828
• Main Authors: Chen, Zhiwei, Ge, Binghui, Li, Wen, Lin, Siqi, Shen, Jiawen, Chang, Yunjie, Hanus, Riley, Snyder, G. Jeffrey, Pei, Yanzhong
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 04.01.2017; Nature Publishing Group; Nature Portfolio
• Subjects: 639/301/119/1000; 639/301/299/2736; Civil engineering; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Electrons; Grain boundaries; Heat conductivity; Humanities and Social Sciences; Materials science; multidisciplinary; Point defects; Science; Science (multidisciplinary); Semiconductors; Solid solutions; thermoelectrics; Beijing China; China

To minimize the lattice thermal conductivity in thermoelectrics, strategies typically focus on the scattering of low-frequency phonons by interfaces and high-frequency phonons by point defects. In addition, scattering of mid-frequency phonons by dense dislocations, localized at the grain boundaries,...