CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Structural, electronic, and optical properties of hexagonal and triangular SiC NWs with different diameters |
Yan-Jing Li(李彦景)1, Ya-Lin Li(李亚林)2, Shu-Long Li(李树龙)1, Pei Gong(龚裴)1, Xiao-Yong Fang(房晓勇)1 |
1 School of Science, Yanshan University, Qinhuangdao 066004, China; 2 Liren College, Yanshan University, Qinhuangdao 066004, China |
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Abstract Silicon carbide (SiC) is a wideband gap semiconductor with great application prospects, and the SiC nanomaterials have attracted more and more attention because of their unique photoelectric properties. According to the first-principles calculations, we investigate the effects of diameter on the electronic and optical properties of triangular SiC NWs (T-NWs) and hexagonal SiC NWs (H-NWs). The results show that the structure of H-NWs is more stable than T-NWs, and the conduction band bottom of H-NWs is more and more deviated from the valence band top, while the conduction band bottom of T-NWs is closer to the valence band top. What is more, H-NWs and T-NWs have anisotropic optical properties. The result may be helpful in developing the photoelectric materials.
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Received: 12 December 2016
Revised: 03 February 2017
Accepted manuscript online:
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11574261) and the Natural Science Foundation of Hebei Province, China (Grant No. A2015203261). |
Corresponding Authors:
Xiao-Yong Fang
E-mail: fang@ysu.edu.cn
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Cite this article:
Yan-Jing Li(李彦景), Ya-Lin Li(李亚林), Shu-Long Li(李树龙), Pei Gong(龚裴), Xiao-Yong Fang(房晓勇) Structural, electronic, and optical properties of hexagonal and triangular SiC NWs with different diameters 2017 Chin. Phys. B 26 047309
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