中国物理B ›› 2018, Vol. 27 ›› Issue (11): 118106-118106.doi: 10.1088/1674-1056/27/11/118106
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Congcong Wang(王聪聪), Xuesheng Liu(刘学胜), Zhiyong Wang(王智勇), Ming Zhao(赵明), Huan He(何欢), Jiyue Zou(邹吉跃)
Congcong Wang(王聪聪), Xuesheng Liu(刘学胜), Zhiyong Wang(王智勇), Ming Zhao(赵明), Huan He(何欢), Jiyue Zou(邹吉跃)
摘要:
The band structure, density of states, optical properties, carrier mobility, and loss function of graphene, black phosphorus (BP), and molybdenum disulfide (MoS2) were investigated by the first-principles method with the generalized-gradient approximation. The graphene was a zero-band-gap semiconductor. The band gaps of BP and MoS2 were strongly dependent on the number of layers. The relationships between layers and band gap were built to predict the band gap of few-layer BP and MoS2. The absorption showed an explicit anisotropy for light polarized in (100) and (001) directions of graphene, BP, and MoS2. This behavior may be readily detected in spectroscopic measurements and exploited for optoelectronic applications. Moreover, graphene (5.27×104 cm2·V-1·s-1), BP (1.5×104 cm2·V-1·s-1),and MoS2(2.57×102 cm2·V-1·s-1) have high carrier mobility. These results show that graphene, BP, and MoS2 are promising candidates for future electronic applications.
中图分类号: (Graphene)