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J Am Chem Soc. 2011 Mar 9;133(9):2816-9. doi: 10.1021/ja109793s. Epub 2011 Feb 10.

Large-area graphene single crystals grown by low-pressure chemical vapor deposition of methane on copper.

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Department of Mechanical Engineering and the Texas Materials Institute, The University of Texas at Austin, 1 University Station C2200, Austin, Texas 78712-0292, USA.


Graphene single crystals with dimensions of up to 0.5 mm on a side were grown by low-pressure chemical vapor deposition in copper-foil enclosures using methane as a precursor. Low-energy electron microscopy analysis showed that the large graphene domains had a single crystallographic orientation, with an occasional domain having two orientations. Raman spectroscopy revealed the graphene single crystals to be uniform monolayers with a low D-band intensity. The electron mobility of graphene films extracted from field-effect transistor measurements was found to be higher than 4000 cm(2) V(-1) s(-1) at room temperature.


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