Xiong Yucheng, Tang Hao, Wang Xiaomeng, Zhao Yang, Fu Qiang, Yang Juekuan, Xu Dongyan
Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region, China.
School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, 210096, China.
Sci Rep. 2017 Oct 16;7(1):13252. doi: 10.1038/s41598-017-13792-4.
In this work, we experimentally investigated the effect of sulfur passivation on thermal transport in indium arsenide (InAs) nanowires. Our measurement results show that thermal conductivity can be enhanced by a ratio up to 159% by sulfur passivation. Current-voltage (I-V) measurements were performed on both unpassivated and S-passivated InAs nanowires to understand the mechanism of thermal conductivity enhancement. We observed a remarkable improvement in electrical conductivity upon sulfur passivation and a significant contribution of electrons to thermal conductivity, which account for the enhanced thermal conductivity of the S-passivated InAs nanowires.
在这项工作中，我们通过实验研究了硫钝化对砷化铟（InAs）纳米线热输运的影响。我们的测量结果表明，通过硫钝化，热导率可提高高达159%。对未钝化和硫钝化的InAs纳米线都进行了电流-电压（I-V）测量，以了解热导率增强的机制。我们观察到硫钝化后电导率有显著提高，并且电子对热导率有重大贡献，这解释了硫钝化的InAs纳米线热导率增强的原因。
