Graphene-like Boron-Carbon-Nitrogen Monolayers
| Autor: | Peter A. Dowben, E. Charles H. Sykes, James Hooper, Axel Enders, Sumit Beniwal, Daniel P. Miller, Eva Zurek, Gang Chen, Paulo S. Costa, Shih-Yuan Liu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Graphene General Engineering General Physics and Astronomy chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention X-ray photoelectron spectroscopy Electron diffraction Chemical engineering chemistry law Covalent bond Monolayer General Materials Science Density functional theory Scanning tunneling microscope 0210 nano-technology Boron |
| Zdroj: | ACS nano. 11(3) |
| ISSN: | 1936-086X |
| Popis: | A strategy to synthesize a 2D graphenic but ternary monolayer containing atoms of carbon, nitrogen, and boron, h-BCN, is presented. The synthesis utilizes bis-BN cyclohexane, B2N2C2H12, as a precursor molecule and relies on thermally induced dehydrogenation of the precursor molecules and the formation of an epitaxial monolayer on Ir(111) through covalent bond formation. The lattice mismatch between the film and substrate causes a strain-driven periodic buckling of the film. The structure of the film and its corrugated morphology is discussed based on comprehensive data from molecular-resolved scanning tunneling microscopy imaging, X-ray photoelectron spectroscopy, low-energy electron diffraction, and density functional theory. First-principles calculations further predict a direct electronic band gap that is intermediate between gapless graphene and insulating h-BN. |
| Databáze: | OpenAIRE |
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