硫属化合物半导体热电材料的电热输运协同调控

Synergistic Optimization of Electrical and Thermal Transport Properties in Chalcogenides Thermoelectric Materials

热电材料作为一种新型的清洁能源材料,能够直接实现热能和电能之间相互转换,有望为提高能源的利用率、缓解环境污染问题提供一种综合协调的选择,因此在能源危机越来越严重的21世纪,热电材料的研究引起了各国研究者的广泛兴趣。然而,电热输运的协同调制一直是一个历史性的难题。硫属化合物半导体作为最重要的一类热电材料,近年来其电热输运性质的协同调控受到了广泛的关注。本文综述了硫属化合物半导体热电材料在电热输运协同调控方面所取得的最新研究进展,分析了其电热输运协同调控及热电性能优化的内在物理机制,并展望这些新的调控策略在热电材料发展的应用前景。

Over the past few years, thermoelectric materials have redrawn considerable attentions among physics, chemistry, and materials researchers due to their capability of direct conversion between heat and electricity, which is today well recognized as viable renewable-energy sources. However, it is still one of the biggest challenges hitherto to independently optimize these three parameters for obtaining high-performance thermoelectric materials with large ZT value. Chalcogenide semiconductors as the most important class of thermoelectric materials, the synergistic optimization of their electrical-thermal transport properties has attracted widespread attentions. Herein, we reviewed the latest development of the synergistic optimization in Chalcogenide semiconductors. We also analyzed the inherent physical mechanisms within the synergistic optimization. Finally, we summarized the prospects of these new strategies in thermoelectric materials development.