期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 116, 期 40, 页码 21556-21562出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp307124d
关键词
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资金
- NSFC [90206048, 20771010, 10774003, 90606023, 11274016, 20731160012]
- MOST of China [2006CB932701, 2007AA03Z311, 2007CB936200, 2013CB932604]
- Fundamental Research Funds for the Central Universities
- National Foundation for Fostering Talents of Basic Science [J1030310, J1103205]
- MOE of China
- Department of Defense [W911NF-12-1-0083]
- NSF [EPS-1010094]
Interest in the two-dimensional MoS2 material is consistently increasing because of its many potential applications, in particular in the next-generation nanoelectronic devices. By means of density functional theory computations, we systematically examined the effect of vertical electric field on the electronic structure of MoS2 bilayer. The bandgaps of the bilayer MoS2 monotonically decrease with an increasing vertical electric field. The critical electric fields, at which the semiconductor-to-metal transition occurs, are predicted to be in the range of 1.0-1.5 V/angstrom depending on different stacked conformations. Ab initio quantum transport simulations of a dual-gated bilayer MoS2 channel clearly confirm that the vertical electric field continuously manipulates the transmission gap of bilayer MoS2.
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