基于PbSe的具有成本效益的对称装置用于热电冷却
Liqing Xu1, Tao Hong2, Shibo Liu2
1School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China.
Advanced materials (Deerfield Beach, Fla.)
|April 29, 2025
概括
本研究介绍了一种具有成本效益的化 (PbSe) 热电装置,用于冷却应用. 新型PbSe设备显示了高冷却性能和优越的成本效益,与传统的甲化物 (Bi2Te3) 材料相比.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 热电工程 热电工程
背景情况:
- 热电冷却对于各种应用至关重要,但由于二 (Te) 在二 (Bi2Te3) 材料中的高成本而受到阻碍.
- 开发具有成本效益的替代品对于热电冷却技术的广泛采用至关重要.
研究的目的:
- 开发一种低成本,高性能的热电冷却装置,使用化 (PbSe).
- 研究合铜的PbSe的载体和声子传输特性,以提高热电性能.
主要方法:
- 使用p型Pb0.988Cu0.002Se和n型Pb1.02Cu0.002Se.制造一个对称的基于PbSe的热电装置.
- 在不同的热面温度下,设备的冷却温度差异 (ΔT_C) 的表征.
- 对p型材料的载体度,功率因子,晶格导热率和功率 (ZT) 数据的分析.
主要成果:
- PbSe装置取得了令人印象深刻的32.8K (在303K热面) 和41.0K (在343K热面) 的ΔT_C值.
- 这种p型的Pb0.988Cu0.002Se显示了优化的载体密度和最大功率系数为28.69μW cm−1 K−2.2.
- 对于p型材料,实现了低晶格导热率 (1.10 W m−1 K−1) 和高ZT值 (0.6在室温下,0.68在300-573 K之间的平均值).
结论:
- 与Bi2Te3设备相比,低成本的基于PbSe的设备为室温附近的热电冷却提供了更高的成本效益.
- 增强的性能归因于优化载体传输,并显著阻碍了p型PbSe.Se中的声子传播.
- 聚乙烯 (PbSe) 是一种有前途的材料,可用于开发负担得起且高效的热电冷却解决方案.
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