A simple method to produce almost perfect graphene on highly oriented pyrolytic graphite

Details A simple method to produce almost perfect graphene on highly oriented pyrolytic graphite A simple method to produce almost perfect graphene on highly oriented pyrolytic graphite

2011-03-31

arxiv.org/abs/1103.6177v1

Physics

Condensed Matter

Materials Science

Scientific paper

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 sp3 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.

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