Excessively Doped PbTe with Ge-Induced Nanostructures Enables High-Efficiency Thermoelectric Modules
Excessively Doped PbTe with Ge-Induced Nanostructures Enables High-Efficiency Thermoelectric Modules
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DOI：
10.1016/j.joule.2018.04.025
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发表时间：
2018-07-18
期刊：
影响因子：
39.8
通讯作者：
Kanatzidis, Mercouri G.
中科院分区：
文献类型：
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作者：
Jood, Priyanka;Ohta, Michihiro;Kanatzidis, Mercouri G.
热电在废热回收中的应用需要高转换效率，这最好通过结合渐进的性能增强策略来实现。在这项研究中，我们将 PbTe 基热电材料中的工程掺杂、纳米结构和模块制造结合起来，生成高 ZT 材料和高效模块。使用过量的 Na (4%) 作为 p 型掺杂剂，通过在高温下产生额外的电荷载流子，大大提高了热电功率因数。添加微量的 Ge (
The application of thermoelectrics in waste heat recovery requires high conversion efficiency, which is best achieved through the combination of progressive performance-enhancing strategies. In this study, we combined engineered doping, nanostructuring, and module fabrication in PbTe-based thermoelectrics to generate high-ZT materials along with high-efficiency modules. The use of excess Na (4%) as a p-type dopant greatly enhanced the thermoelectric power factor by generating extra charge carriers at high temperature. The addition of minute amounts of Ge (