Doping Dependence of the Raman Spectrum of Defected Graphene
Top Cited Papers
- 24 June 2014
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 8 (7), 7432-7441
- https://doi.org/10.1021/nn502676g
Abstract
We investigate the evolution of the Raman spectrum of defected graphene as a function of doping. Polymer electrolyte gating allows us to move the Fermi level up to 0.7 eV, as directly monitored by in situ Hall-effect measurements. For a given number of defects, we find that the intensities of the D and D′ peaks decrease with increasing doping. We assign this to an increased total scattering rate of the photoexcited electrons and holes, due to the doping-dependent strength of electron–electron scattering. We present a general relation between D peak intensity and defects valid for any doping level.Keywords
This publication has 47 references indexed in Scilit:
- Roll-to-roll production of 30-inch graphene films for transparent electrodesNature Nanotechnology, 2010
- Raman Study on the G Mode of Graphene for Determination of Edge OrientationACS Nano, 2010
- Doped Graphene as Tunable Electron−Phonon Coupling MaterialNano Letters, 2010
- Large Area, Few-Layer Graphene Films on Arbitrary Substrates by Chemical Vapor DepositionNano Letters, 2008
- The rise of grapheneNature Materials, 2007
- Raman Spectrum of Graphene and Graphene LayersPhysical Review Letters, 2006
- Beyond the metal-insulator transition in polymer electrolyte gated polymer field-effect transistorsProceedings of the National Academy of Sciences of the United States of America, 2006
- Electric Field Effect in Atomically Thin Carbon FilmsScience, 2004
- Interpretation of Raman spectra of disordered and amorphous carbonPhysical Review B, 2000
- Characterization of diamond films by Raman spectroscopyJournal of Materials Research, 1989