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  Growth and electronic structure of nitrogen-doped graphene on Ni(111)

Koch, R. J., Weser, M., Zhao, W., Viñes, F., Gotterbarm, K., Kozlov, S. M., et al. (2012). Growth and electronic structure of nitrogen-doped graphene on Ni(111). Physical Review B, 86(7): 075401. doi:10.1103/PhysRevB.86.075401.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-1189-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-118C-8
Genre: Journal Article

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PhysRevB.86.075401.pdf (Publisher version), 966KB
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2012
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 Creators:
Koch, R. J.1, Author
Weser, Martin2, Author              
Zhao, W.3, Author
Viñes, F.4, Author
Gotterbarm, K.3, Author
Kozlov, S. M.4, Author
Höfert, O.3, Author
Ostler, M.1, Author
Papp, C.3, Author
Gebhardt, J.4, Author
Steinrück, H. -P.3, Author
Görling, A.4, Author
Seyller, Th.1, Author
Affiliations:
1Lehrstuhl für Technische Physik, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, escidoc:persistent22              
2Molecular Physics, Fritz Haber Institute, Max Planck Society, escidoc:634545              
3Lehrstuhl für Physikalische Chemie II, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, escidoc:persistent22              
4Lehrstuhl für Theoretiische Chemie , Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, escidoc:persistent22              

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 Abstract: We report on experimental and theoretical investigations of nitrogen-doped graphene. The incorporation of nitrogen was achieved during chemical-vapor deposition on Ni(111) using pyridine as a precursor. The obtained graphene layers were investigated using photoelectron spectroscopy. By studying C 1s and N 1s core levels, we show that the nitrogen content is influenced by the growth temperature and determine the atomic arrangement of the nitrogen atoms. Valence-band photoelectron spectra show that the incorporation of nitrogen leads to a broadening of the photoemission lines and a shift of the π band. Density functional calculations for two possible geometric arrangements, the substitution of carbon atoms by nitrogen and vacancies in the graphene sheet with pyridinic nitrogen at the edges, reveal that the two arrangements have opposite effects on the band structure. For the present experimental approach, vacancies with pyridinic nitrogen are dominant. In the latter case the vacancies generated by the nitrogen doping, not the nitrogen itself, have the main effect on the band structure. By intercalating gold between the doped graphene layer and the Ni(111) substrate electronic decoupling is achieved. After intercalation the doping remains.

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Language(s): eng - English
 Dates: 2012-06-142012-08-012012-08-15
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.86.075401
 Degree: -

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Title: Physical Review B
Source Genre: Journal
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Publ. Info: Woodbury, NY : Published by the American Physical Society through the American Institute of Physics
Pages: - Volume / Issue: 86 (7) Sequence Number: 075401 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925225008