Ultraviolet Raman Spectroscopy of Single and Multi-layer Graphene
arXiv:0903.1922 · doi:10.1063/1.3197065
Abstract
We investigated Raman spectra of single-layer and multi-layer graphene under ultraviolet laser excitation at the wavelength of 325 nm. It was found that while the G peak of graphene remains pronounced in UV Raman spectra, the 2D band intensity undergoes severe quenching. The evolution of the ratio of the intensities of the G and 2D peaks, I(G)/I(2D), as the number of graphene layers n changes from n=1 to n=5, is different in UV Raman spectra from that in conventional visible Raman spectra excited at the 488 nm and 633 nm wavelengths. The 2D band under UV excitation shifts to larger wave numbers and is found near 2825 1/cm. The observed UV Raman features of graphene were explained by invoking the resonant scattering model. The obtained results contribute to the Raman nanometrology of graphene by providing an additional metric for determining the number of graphene layers and assessing its quality.
18 pages; 5 figures; submitted for publication on February 20, 2009
References in corpus (20)
- Electric Field Effect in Atomically Thin Carbon Films
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- The Raman Fingerprint of Graphene
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Ultrahigh electron mobility in suspended graphene
- Detection of Individual Gas Molecules Absorbed on Graphene
- Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene-based nanoelectronics
- Giant Intrinsic Carrier Mobilities in Graphene and Its Bilayer
- Spatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene
- Chaotic Dirac billiard in graphene quantum dots
- Raman scattering from high frequency phonons in supported n-graphene layer films
- Born-Oppenheimer Breakdown in Graphene
- Raman Fingerprint of Charged Impurities in Graphene
- Magnetic Correlations at Graphene Edges
- Thermal conductivity of graphene flakes: Comparison with bulk graphite
- Modification of Graphene Properties due to Electron-Beam Irradiation
- Graphene-on-Sapphire and Graphene-on-Glass: Raman Spectroscopy Study
- Theory of resonant multiphonon Raman scattering in graphene
- Flicker Noise in Bilayer Graphene Transistors
- Effect of inelastic collisions on multiphonon Raman scattering in graphene
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- Raman Optothermal Technique for Measuring Thermal Conductivity of Graphene and Related Materials
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- Tuning of Graphene Properties via Controlled Exposure to Electron Beams
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- Graphene Thickness-Graded Transistors with Reduced Low-Frequency 1/f Noise
- Anomalous Electron Transport in Field-Effect Transistors with Titanium Ditelluride Semimetal Thin-Film Channels
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- Multiphonon Raman Scattering in Graphene
- Beyond double-resonant Raman scattering: UV Raman spectroscopy on graphene, graphite and carbon nanotubes
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- Silicon Oxide Electron-Emitting Nanodiodes
- Putting high-index Cu on the map for high-yield, dry-transferred CVD graphene
- The emergence of quantum capacitance in epitaxial graphene
- Twisted Bilayer Graphene Superlattices
- Strong Enhancement of Thermal Properties of Copper Films after Chemical Vapor Deposition of Graphene
- Low-Frequency Current Fluctuations in Graphene-like Exfoliated Thin-Films of Topological Insulators