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The evolution of Raman spectrum of graphene with the thickness of SiO2 capping layer on Si substrate
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10.1063/1.4832063
/content/aip/journal/apl/103/21/10.1063/1.4832063
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/21/10.1063/1.4832063
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The optical microscope image of a sheet of monolayer graphene on a SiO/Si substrate with various SiO thicknesses.

Image of FIG. 2.
FIG. 2.

The evolution of Raman spectra with the thickness of SiO for (a) monolayer and (b) bilayer graphenes. Notably, the two additional signals (∼1450 cm−1 and ∼1530 cm−1) in (a) are the Raman signals of PMMA under 632.8 nm excitation.

Image of FIG. 3.
FIG. 3.

The intensities of D, G, 2D Raman bands, and / (a)–(d), respectively, SiO thickness for monolayer graphene. The scattered data are the experimental results. The red lines are the theoretical results.

Image of FIG. 4.
FIG. 4.

The intensities of D, G, 2D Raman bands, and / (a)–(d), respectively, SiO thickness for bilayer graphene. The scattered data are the experimental results. The red lines are the theoretical results.

Image of FIG. 5.
FIG. 5.

The Raman spectra of bilayer graphene on (a) a 300 nm SiO/Si substrate and (b) a 600 nm SiO/Si substrate.

Image of FIG. 6.
FIG. 6.

The calculated intensities of (a) D band, (b) G band, (c) 2D band, and (d) / of monolayer graphene SiO thickness (ranging from 0 to 10 m).

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/content/aip/journal/apl/103/21/10.1063/1.4832063
2013-11-18
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The evolution of Raman spectrum of graphene with the thickness of SiO2 capping layer on Si substrate
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/21/10.1063/1.4832063
10.1063/1.4832063
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