Abstract
Strain engineering has been proven as an effective approach to modify electronic and thermal properties of materials. Recently, strain effects on two-dimensional materials have become important relevant topics in this field. We performed density functional theory studies on the electronic and heat transport properties of bilayer boronitrene samples under an isotropic strain. We demonstrate that the strain will reduce the band gap width but keep the band gap type robust and direct. The strain will enhance the thermal conductivity of the system because of the increase in specific heat. The thermal conductivity was studied as a function of the phonon mean-free path.
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Acknowledgements
The authors are grateful for financial support from the National Natural Science Foundation of China under Grant Nos. 51606192, 51336009 the Natural Science Foundation of Hebei Province under Grant No. A2017201219, the Ministry of Science and Technology of PRC under Grant No. 2013YQ120355, the Technology Foundation for Selected Overseas Chinese Scholar, MOHRSS and the CAS Pioneer Hundred Talents Program. Calculations were performed on the supercomputer at CNIC-CAS and on the cluster at IET-CAS.
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Selected paper from Asian Thermophysical Properties Conference.
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Yang, M., Sun, FY., Wang, RN. et al. Strain Modulation of Electronic and Heat Transport Properties of Bilayer Boronitrene. Int J Thermophys 38, 155 (2017). https://doi.org/10.1007/s10765-017-2287-6
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DOI: https://doi.org/10.1007/s10765-017-2287-6