Bandgap engineering of graphene by corrugation on lattice-mismatched MgO (111)
- Title
- Bandgap engineering of graphene by corrugation on lattice-mismatched MgO (111)
- Author
- 정용재
- Keywords
- DENSITY-FUNCTIONAL THEORY; METAL-SURFACES; QUANTUM DOTS; SEMICONDUCTORS; ADSORPTION; STABILITY; RU(0001); SI
- Issue Date
- 2013-02
- Publisher
- Royal Society of Chemistry
- Citation
- Journal of Materials Chemistry C, Feb 2013, 1(8), P.1595-1600
- Abstract
- The corrugation pattern and electronic structure of graphene on MgO (111), which is a lattice-mismatched substrate, were investigated using the ab initio method. On Mg-terminated octo-polar reconstructed MgO (111), graphene was physisorbed and shaped into a stripe-like corrugation pattern. Due to weak charge transfer at the interface, the graphene was of the n-type doped, and its low effective mass was preserved. On the other hand, graphene on O-terminated octo-polar reconstructed MgO (111) showed a larger corrugation triggered by periodic oxygen-carbon chemisorption. In addition, a band-gap opening, which was induced by the periodic chemisorption, of 0.294 eV was observed. The results indicate that a corrugation structure induced by the lattice-mismatched substrate is highly effective for band-gap engineering treatment.
- URI
- http://pubs.rsc.org/en/Content/ArticleLanding/2013/TC/c2tc00257d#!divAbstracthttp://hdl.handle.net/20.500.11754/43779
- ISSN
- 2050-7526; 2050-7534
- DOI
- 10.1039/c2tc00257d
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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