Differences between Graphene Grown on Si-Face and C-Face

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Abstract:

Epitaxial graphene growth is significantly different depending on the polarity of the 6H-SiC surface: Si- or C-face. On the Si-face, a uniform coverage of few layers on the whole sample can be obtained, but with electrical properties disturbed by the presence of a Carbon-rich buffer layer at the interface. On the contrary, on the C-face, we demonstrated that almost free-standing very large monolayers of graphene can be obtained by covering the sample with a graphitic cap during the growth.

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Materials Science Forum (Volumes 645-648)

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581-584

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April 2010

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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