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

✍ Scribed by M.J. Webb; P. Palmgren; P. Pal; O. Karis; H. Grennberg

• Book ID: 104009542
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 608 KB
• Volume: 49
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/j.carbon.2011.03.050

✦ Synopsis

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.