对AgCuS用于灵活热电应用的散射机制和传输特性进行洞察
Ho Ngoc Nam1,2, Quan Manh Phung3,4, Katsuhiro Suzuki2
1Institute of Materials Innovation, Institutes of Innovation for Future Society, Nagoya University, Nagoya 464-8601, Japan.
ACS applied materials & interfaces
|September 7, 2023
概括
研究人员发现α-AgCuS具有出色的可塑性和有前途的热电特性. 减弱电子极光学声子相互作用可以进一步提高其性能,用于灵活的热电设备.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 固态化学 固态化学
背景情况:
- 灵活的热电器件需要具有柔性和高室温性能的材料.
- 目前很少有材料能够满足这些双重要求,这突显了研究中的关键差距.
研究的目的:
- 为了研究α-AgCuS.的柔性特性,电子结构和传输特性.
- 评估其作为灵活热电应用的p型材料的潜力.
主要方法:
- 使用第一原则计算来阐明材料的特性.
- 博尔茨曼运输理论被用来分析电子运输行为.
主要成果:
- α-AgCuS 由于其多层齐格扎格结构,具有良好的金属状柔性.
- 电子-极极光学声子相互作用显著影响传输特性.
- 在室温下预测的最大无维值值 (ZT) 为0.592,在最优化的孔度下.
结论:
- α-AgCuS 是灵活热电应用的有希望的候选物.
- 通过兴奋剂或合金来调整电子-极性光学声子相互作用,可以提高热电性能.
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