中国物理B ›› 2017, Vol. 26 ›› Issue (4): 47309-047309.doi: 10.1088/1674-1056/26/4/047309
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
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)
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
摘要: 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.
中图分类号: (Other inorganic semiconductors)