Investigation of the shift of Raman modes of graphene flakes

M. Haluška, D. Obergfell, J.C. Meyer, G. Scalia, G. Ulbricht, B. Krauss, D.H. Chae, T. Lohmann, M. Lebert, M. Kaempgen, M. Hulman, J. Smet, S. Roth, K. Von Klitzing

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Abstract

In the present work, we use Raman spectroscopy as sensitive tool for the characterization of graphene samples. We observed diverse shifts in the position of the Raman mode close to 2650 cm-1in various as-prepared graphene flakes. In order to elucidate the reason for this variation, we checked different substrates (Si/SiO2and Si/Al2O3) and the effect of the annealing of graphene in argon. We find that most of as-prepared graphene flakes were non-intentional doped by holes, i.e. by physisorbed water and/or oxygen. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA,.
Original languageEnglish
Pages (from-to)4143 - 4146
Number of pages4
JournalPhysica Status Solidi (B): Basic Research
Volume244
Issue number11
DOIs
Publication statusPublished - Nov 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Haluška, M., Obergfell, D., Meyer, J. C., Scalia, G., Ulbricht, G., Krauss, B., ... Von Klitzing, K. (2007). Investigation of the shift of Raman modes of graphene flakes. Physica Status Solidi (B): Basic Research, 244(11), 4143 - 4146. https://doi.org/10.1002/pssb.200776202