Raman investigation of few-layer graphene on different substrate structures

Jong Kwon Lee, Shiro Yamazaki, Do Hyun Kim, Gyu-Tae Kim, Urszula Dettlaff-Weglikowska, Siegmar Roth

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report Raman analysis of few-layer graphene (FLG) transferred on flat and patterned substrate structures. These different surface structures created by patterning an area of a Si-substrate produce differences in the interaction between FLG and the substrate surface. The topography measurement performed by scanning tunneling potentiometry shows that the FLG on the patterned substrate was deformed periodically with 3-4nm depth variation. Raman spectroscopy reveals that two important features related to the G- and 2D-modes in graphitic structures show different sensitivity to the interaction with the substrate for single-layer graphene (SLG), FLG, and graphite. Whereas SLG and FLG placed on the patterned substrate demonstrate a strong shift of both 2D- and G-peaks to lower frequencies with respect to the flat part, the multilayer graphene in a graphite flake shows almost no difference between patterned and non-patterned substrates. We identified the origin of the observed changes in the Raman spectra of SLG and FLG as effects created by the underlying substrate. Especially, substrate induced periodic strain and surface interaction were taken into account to interpret the results.

Original languageEnglish
Pages (from-to)2534-2537
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Volume249
Issue number12
DOIs
Publication statusPublished - 2012 Dec 1

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Graphite
Graphene
graphene
Substrates
graphite
potentiometric analysis
flakes
interactions
Surface structure
Topography
surface reactions
Raman spectroscopy
Raman scattering
topography
Multilayers
Raman spectra
low frequencies
Scanning
scanning

Keywords

  • Few-layer graphene
  • Raman spectroscopy
  • Substrate structures

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Raman investigation of few-layer graphene on different substrate structures. / Lee, Jong Kwon; Yamazaki, Shiro; Kim, Do Hyun; Kim, Gyu-Tae; Dettlaff-Weglikowska, Urszula; Roth, Siegmar.

In: Physica Status Solidi (B) Basic Research, Vol. 249, No. 12, 01.12.2012, p. 2534-2537.

Research output: Contribution to journalArticle

Lee, JK, Yamazaki, S, Kim, DH, Kim, G-T, Dettlaff-Weglikowska, U & Roth, S 2012, 'Raman investigation of few-layer graphene on different substrate structures', Physica Status Solidi (B) Basic Research, vol. 249, no. 12, pp. 2534-2537. https://doi.org/10.1002/pssb.201200606
Lee, Jong Kwon ; Yamazaki, Shiro ; Kim, Do Hyun ; Kim, Gyu-Tae ; Dettlaff-Weglikowska, Urszula ; Roth, Siegmar. / Raman investigation of few-layer graphene on different substrate structures. In: Physica Status Solidi (B) Basic Research. 2012 ; Vol. 249, No. 12. pp. 2534-2537.
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