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Effect of oxygen and nitrogen functionalization on the physical and electronic structure of graphene
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Marsden, Alexander J., Brommer, Peter, Mudd, James J., Dyson, Mark Adam, Cook, Robert M., Asensio, María, Avila, José, Levy, Ana, Sloan, Jeremy, Quigley, David, Bell, Gavin R. and Wilson, Neil R. (2015) Effect of oxygen and nitrogen functionalization on the physical and electronic structure of graphene. Nano Research . pp. 1-16. doi:10.1007/s12274-015-0768-0
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Official URL: http://dx.doi.org/10.1007/s12274-015-0768-0
Abstract
Covalent functionalization of graphene offers opportunities for tailoring its properties and is an unavoidable consequence of some graphene synthesis techniques. However, the changes induced by the functionalization are not well understood. By using atomic sources to control the extent of the oxygen and nitrogen functionalization, we studied the evolution in the structure and properties at the atomic scale. Atomic oxygen reversibly introduces epoxide groups whilst, under similar conditions, atomic nitrogen irreversibly creates diverse functionalities including substitutional, pyridinic, and pyrrolic nitrogen. Atomic oxygen leaves the Fermi energy at the Dirac point (i.e., undoped), whilst atomic nitrogen results in a net n-doping; however, the experimental results are consistent with the dominant electronic effect for both being a transition from delocalized to localized states, and hence the loss of the signature electronic structure of graphene.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QC Physics T Technology > TS Manufactures |
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| Divisions: | Faculty of Science > Engineering Faculty of Science > Physics Faculty of Science > Centre for Scientific Computing |
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| Library of Congress Subject Headings (LCSH): | Graphene -- Structure, Density functionals, Chemical vapor deposition, Graphene -- Electric properties | ||||||||
| Journal or Publication Title: | Nano Research | ||||||||
| Publisher: | Tsinghua University Press | ||||||||
| ISSN: | 1998-0124 | ||||||||
| Official Date: | 16 July 2015 | ||||||||
| Dates: |
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| Number of Pages: | 16 | ||||||||
| Page Range: | pp. 1-16 | ||||||||
| DOI: | 10.1007/s12274-015-0768-0 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Seventh Framework Programme (European Commission) (FP7) | ||||||||
| Grant number: | EP/ K005200/1 (EPSRC), EP/H00341X/1 (EPSRC), EP/K000233/1 (EPSRC), 312284 (FP7) | ||||||||
| Open Access Version: |
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