, Volume 4, Issue 12, pp 1208-1214
Date: 15 Sep 2011

Synthesis of large-area, few-layer graphene on iron foil by chemical vapor deposition

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We demonstrate a simple and controllable way to synthesize large-area, few-layer graphene on iron substrates by an optimized chemical vapor deposition (CVD) method using a mixture of methane and hydrogen. Based on an analysis of the Fe-C phase diagram, a suitable procedure for the successful synthesis of graphene on Fe surfaces was designed. An appropriate temperature and cooling process were found to be very important in the synthesis of highly crystalline few-layer graphene. Graphene-based field-effect transistor (FET) devices were fabricated using the resulting few-layer graphene, and showed good quality with extracted mobilities of 300–1150 cm2/(V·s). http://static-content.springer.com/image/art%3A10.1007%2Fs12274-011-0171-4/MediaObjects/12274_2011_171_Fig1_HTML.gif