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Studies of Li intercalation into epitaxial graphene on SiC(0001)
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
MAX-lab, Lund University, S-22100 Lund, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
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2012 (English)In: Materials Science Forum Vols 717 - 720, Trans Tech Publications Inc., 2012, Vol. 717-720, 653-656 p.Conference paper, Published paper (Refereed)
Abstract [en]

Detailed studies of Li deposition on monolayer graphene grown on the Si-face SiCsurface were performed using LEEM, μ-LEED, PES and ARPES. Li was found to intercalatedirectly after the deposition at room temperature. However, excess Li was also observed on thesurface and found to form a compound with carbon atoms. This compound is suggested to give riseto a new (√3x√3) R30° surface reconstruction. After annealing the (√3x√3) R30° reconstructionvanished and only a (1x1) graphene diffraction pattern was visible. At the same time a severechange was observed in the graphene morphology, especially from the ex-situ grown graphene, i.e.,extended areas of cracks/wrinkles were observed. These wrinkles/cracks did not disappear evenafter heating at temperature of 500-1000°C when no Li signal was detected.

Place, publisher, year, edition, pages
Trans Tech Publications Inc., 2012. Vol. 717-720, 653-656 p.
Keyword [en]
graphene, intercalation, functionalization, doping, electronic structure
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-78695DOI: 10.4028/www.scientific.net/MSF.717-720.653ISI: 000309431000156OAI: oai:DiVA.org:liu-78695DiVA: diva2:534769
Conference
The 2011 International Conference on Silicon Carbide and Related Materials (ICSCRM 2011), September 11 – 16, 2011, Cleveland, Ohio, USA
Available from: 2012-06-18 Created: 2012-06-18 Last updated: 2013-02-04Bibliographically approved

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Virojanadara, ChariyaWatcharinyanon, SomsakuYakimova, RositsaJohansson, Leif I.

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Virojanadara, ChariyaWatcharinyanon, SomsakuYakimova, RositsaJohansson, Leif I.
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