期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 1, 期 11, 页码 2131-2135出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tc00629h
关键词
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资金
- NSFC [61274123, 60801005, 60990320, 60990322, 61006077, 61150110487, 61275183, 10834004]
- Foundation for the Author of National Excellent Doctoral Dissertation of PR China [200950]
- ZJNSF [LR12F04001]
- Fundamental Research Funds for the Central Universities
- SRFDP [20100101120045]
- Chinese Scholarship Council Foundation [2011833070]
- Program for New Century Excellent Talents in University [NCET-12-0489]
- State Key Laboratory of Modern Optical Instrumentation [111306*A61001]
- China postdoctoral science foundation [20100480083, 201104714]
- King's College, Cambridge
- Royal Academy of Engineering
Two-dimensional graphene-like silicon carbide (2d-SiC) has emerged as an intriguing new class of layered nanostructure. Using density functional theory, key electronic and optical properties of 2d-SiC nanosheets, in particular, of mono-and bilayer 2d-SiC, are investigated. The properties of these nanosheets are found to be highly dependent on their physical thickness and geometric configuration. Multilayer 2d-SiC exhibits an indirect bandgap. We find that monolayer 2d-SiC, on the other hand, has a direct bandgap (similar to 2.5 eV) that can be tuned through in-plane strain. We also show that the optical conductivity of multilayer 2d-SiC is sensitive to the interlayer spacing. The results suggest that unlike graphene, silicene and even multilayer 2d-SiC, monolayer 2d-SiC could be a good candidate for optoelectronic devices such as light-emitting diodes.
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