通过调节载体度与共振水平兴奋剂相结合,提高InSb的热电性能
Qing Wang1, Zhiliang Li2, Jianglong Wang2
1State Key Laboratory of New Ceramics Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|January 12, 2026
概括
锡兴奋剂增强了用于热电应用的抗氧化物 (InSb). 这种优化提高了电气性能,降低了导热率,实现了高功率 (zT) 的高效能源转换.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 能源转换 能源转换
背景情况:
- 抗 (InSb) 半导体由于其无毒性和稳定性等有利性质,为中温热电设备提供了潜在的潜力.
- 在优化InSb电气性能方面的挑战源于其单一的导电带,小的有效质量和狭窄的载波运输范围.
研究的目的:
- 通过 (Sn) 剂来增强InSb的热电性能.
- 调查Sn-doping对InSb.电气和热传输特性的影响.
主要方法:
- 使用sn-doping引入接近费米水平的共振水平,并优化INSb中的载体度.
- 测量了热电特性,包括功率系数和热导率.
- 评估了热电设备的性能.
主要成果:
- Sn-doping显著改善了电导率,并保持了InSb中的高Seebeck系数,导致功率系数为~5.60 mW m-1 K-2.
- 对于InSn0.00125Sb,在723 K时达到0.80的zT峰值,与内在InSb相比增加了67%,这是由于功率因子增强和热导率降低.
- 一个基于InSb的模块在320K的温度差异下显示了94mV的开放电路电压和2885μW的输出功率.
结论:
- Sn-doping是一种有效的策略,可以优化基于InSb的材料的热电性能.
- 增强的InSb对实际的热电能转换应用,包括太阳能热电设备,具有很大的潜力.
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