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Counting molecular-beam grown graphene layers
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10.1063/1.4811708
/content/aip/journal/apl/102/24/10.1063/1.4811708
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/24/10.1063/1.4811708
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the molecular-beam deposition. Inset: Expanded schematic of the growth of graphene layers on the silicon dioxide substrate.

Image of FIG. 2.
FIG. 2.

Typical Raman spectra from (a) isotropically arranged graphene layers, (b) the two-dimensional graphene growth parallel to the Si/SiO substrate surface and (c) the silicon substrate. Note, the different intensity scales in each case, for spectra taken under similar experimental conditions. Insets: Schematics representing the location of the laser beam on the graphene film.

Image of FIG. 3.
FIG. 3.

Ratios of the integrated intensity of the Raman G peak, I(G), and the first-order optical phonon peak of silicon, I(Si-1TO), for molecular-beam grown graphene (black filled circles) and for exfoliated graphene flakes (redopen circles). The graphene flakes are numbered in ascending I(G)/I(Si-1TO) order. The dashed line is a guide for the eye with the I(G)/I(Si-1TO) ratios for the given assigned number of layers based on the data of Figure 2 of Ref. .

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/content/aip/journal/apl/102/24/10.1063/1.4811708
2013-06-19
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Counting molecular-beam grown graphene layers
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/24/10.1063/1.4811708
10.1063/1.4811708
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