A simple method to produce almost perfect graphene on highly oriented pyrolytic graphite
Carbon (2011)
- ISSN: 00086223
- DOI: 10.1016/j.carbon.2011.03.050
Available from linkinghub.elsevier.com
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Abstract
A simple and effective stepwise-method was developed to remove defects from the top graphene layers of highly oriented pyrolytic graphite. Using a combination of ozone exposure and moderately high temp. we have shown that a defect-rich graphite surface can be modified to generate a graphene-like surface contg. a negligible amt. of oxygen, hydrogen and sp3 carbon. We report definitive X-ray photoelectron and X-ray absorption spectroscopy anal. after each stage of the process, suggest a mechanism by which the modification occurs and propose it as a route towards the prepn. or manipulation of pristine graphene samples. on SciFinder(R)
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