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A simple method to produce almost perfect graphene on highly oriented pyrolytic graphite
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
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2011 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 49, no 10, 3242-3249 p.Article in journal (Refereed) Published
Abstract [en]

A simple and effective stepwise-method has been developed to remove defects from the top graphene layers of highly orientated pyrolytic graphite. Using a combination of ozone exposure and moderately high temperature we have shown that a defect-rich graphite surface can be modified to generate a graphene-like surface containing a negligible amount of oxygen, hydrogen and sp(3) carbon. we report definitive X-ray photoelectron and X-ray absorption spectroscopy analysis after each stage of the process, suggest a mechanism by which the modification occurs and propose it as a route towards the preparation or manipulation of pristine graphene samples.

Place, publisher, year, edition, pages
2011. Vol. 49, no 10, 3242-3249 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-156119DOI: 10.1016/j.carbon.2011.03.050ISI: 000291959300012OAI: oai:DiVA.org:uu-156119DiVA: diva2:430505
Available from: 2011-07-11 Created: 2011-07-11 Last updated: 2011-07-11Bibliographically approved

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