State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and, Engineering, Tsinghua University, Beijing, 100084, PR China.
Adv Mater. 2013 Sep 25;25(36):5086-90. doi: 10.1002/adma.201301675. Epub 2013 Jul 30.
A high-performance thermoelectric oxyselenide BiCuSeO ceramic with ZT > 1.1 at 823 K and higher average ZT value (ZTave ≈0.8) is obtained. The heavy doping element and nanostructures can effectively tune its electronic structure, hole concentration, and thermal conductivity, resulting in substantially enhanced mobility, power factor, and thus ZT value. This work provides a path to high-performance thermoelectric ceramics.
一种高性能的氧硒化铋铜（BiCuSeO）陶瓷，在 823 K 时 ZT 超过 1.1，平均 ZT 值（ZTave≈0.8）更高。重掺杂元素和纳米结构可以有效地调节其电子结构、空穴浓度和热导率，从而显著提高迁移率、功率因子，进而提高 ZT 值。这项工作为高性能热电陶瓷提供了一条途径。
