A simple method to produce almost perfect graphene on highly oriented pyrolytic graphite
2011 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 49, no 10, 3242-3249 p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:uu:diva-156119DOI: 10.1016/j.carbon.2011.03.050ISI: 000291959300012OAI: oai:DiVA.org:uu-156119DiVA: diva2:430505