Department of Materials Science, California Institute of Technology, Pasadena, CA 91125, USA.
Adv Mater. 2011 Dec 15;23(47):5674-8. doi: 10.1002/adma.201103153. Epub 2011 Nov 4.
The band structure of PbTe can be manipulated by alloying with MgTe to control the band degeneracy. This is used to stabilize the optimal carrier concentration, making it less temperature dependent, demonstrating a new strategy to improve overall thermoelectric efficiency over a broad temperature range.
通过与 MgTe 合金化来控制能带简并度,可以操纵 PbTe 的能带结构。这用于稳定最佳载流子浓度,使其对温度的依赖性降低,展示了在较宽温度范围内提高整体热电效率的新策略。