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Raman Spectra of Epitaxial Graphene on SiC and of Epitaxial Graphene Transferred to SiO2
Open accessAbstract
Raman spectra were measured for mono-, bi-, and trilayer graphene grown on SiC by solid state graphitization, whereby the number of layers was preassigned by angle-resolved ultraviolet photoemission spectroscopy. It was found that the only unambiguous fingerprint in Raman spectroscopy to identify the number of layers for graphene on SiC(0001) is the line width of the 2D (or D*) peak. The Raman spectra of epitaxial graphene show significant differences as compared to micromechanically cleaved graphene obtained from highly oriented pyrolytic graphite crystals. The G peak is found to be blue-shifted. The 2D peak does not exhibit any obvious shoulder structures, but it is much broader and almost resembles a single-peak even for multilayers. Flakes of epitaxial graphene were transferred from SiC onto SiO2 for further Raman studies. A comparison of the Raman data obtained for graphene on SiC with data for epitaxial graphene transferred to SiO2 reveals that the G peak blue-shift is clearly due to the SiC substrate. The broadened 2D peak however stems from the graphene structure itself and not from the substrate.
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Cites
Two-dimensional gas of massless Dirac fermions in graphene
Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Katsnelson, M. I., Grigorieva, I. V., Dubonos, S. V., & Firsov, A. A. (2005) · Nature · doi:10.1038/nature04233 · Cited by 21,611
Experimental observation of the quantum Hall effect and Berry's phase in graphene
Zhang, Y., Tan, Y.-W., Stormer, H. L., & Kim, P. (2005) · Nature · doi:10.1038/nature04235 · Cited by 13,435
Cited by
Kumar, R., Sahoo, S., Joanni, E., Singh, R. K., Tan, W. K., Kar, K. K., & Matsuda, A. (2019) · Progress in Energy and Combustion Science · doi:10.1016/j.pecs.2019.100786 · Cited by 554
Graphene transfer: key for applications
Kang, J., Shin, D., Bae, S., & Hong, B. H. (2012) · Nanoscale · doi:10.1039/c2nr31317k · Cited by 474
Reina, A., Thiele, S., Jia, X., Bhaviripudi, S., Dresselhaus, M. S., Schaefer, J. A., & Kong, J. (2009) · Nano Research · doi:10.1007/s12274-009-9059-y · Cited by 473
Direct Chemical Vapor Deposition of Graphene on Dielectric Surfaces
Ismach, A., Druzgalski, C., Penwell, S., Schwartzberg, A., Zheng, M., Javey, A., Bokor, J., & Zhang, Y. (2010) · Nano Letters · doi:10.1021/nl9037714 · Cited by 470
Progress and Challenges in Transfer of Large‐Area Graphene Films
Chen, Y., Gong, X., & Gai, J. (2016) · Advanced Science · doi:10.1002/advs.201500343 · Cited by 357
Metadata
- Authors
- Lee, D. S., Riedl, C., Krauss, B., von Klitzing, K., Starke, U., & Smet, J. H.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-11-07
- Volume
- 8
- Issue
- 12
- Pages
- 4320-4325
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2071957899
- Cited by
- 427
- References
- 2
- FWCI
- 13.30
- Type
- journal article
- Language
- en
- Open access
- green
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