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SnTe基热电材料及器件的研究进展与展望

Research Progress and Prospects of SnTe-based Thermoelectric Materials and Devices

  • 摘要: SnTe材料具有环保无毒和多价带结构特性,在热电领域备受关注。目前,通过载流子浓度优化、能带结构调控和多尺度缺陷构建等策略,SnTe的热电优被显著提高;通过界面材料设计和焊接工艺优化,开发出了转换效率约为10%的SnTe基热电模块。本文从SnTe晶体结构和能带结构的特点出发,详细介绍了SnTe基材料的性能优化策略,探讨了SnTe基器件的界面材料选择难题,总结了SnTe基热电器件的构筑,并展望了SnTe热电材料及其器件的未来研究。

     

    Abstract: SnTe materials are of interest in the thermoelectric field due to their environmentally friendly, non-toxic properties and multivalent band structure. Currently, the thermoelectric figure of merit of SnTe has been significantly improved through carrier concentration optimization, band structure engineering, and multi-scale defect construction. Following interface material design and welding process optimization, SnTe-based thermoelectric modules with conversion efficiencies of ~10% have been developed. This review begins by examining the crystal and electronic band structure characteristics of SnTe. It then details strategies for optimizing the strategy of SnTe-based materials, discusses the challenges associated with selecting interface materials for SnTe-based devices, and summarizes the construction approaches of SnTe-based thermoelectric devices. Finally, it presents an outlook on the future research for SnTe thermoelectric materials and devices.

     

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