Raman Fingerprint of Charged Impurities in Graphene
By Cinzia Casiraghi, Simone Pisana, K. Novoselov, A.K. Geim, Andrea C. Ferrari. 2007
873 citations recorded by the source corpus.
We report strong variations in the Raman spectra for different single-layer graphene samples obtained by micromechanical cleavage. This reveals the presence of excess charges, even in the absence of intentional doping. Doping concentrations up to ∼1013cm−2 are estimated from the G peak shift and width and the variation of both position and relative intensity of the second order 2D peak. Asymmetric G peaks indicate charge inhomogeneity on a scale of less than 1μm.
Subfields: Biomedical Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/794106acfabcba134da11896bf8608d6fe295378
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Biomedical Engineering
- I. Kinloch
- R. Young
- D. Papageorgiou
- K. Novoselov
- Jonathan N. Coleman
- Kostas Kostarelos
- Andrea C. Ferrari
- M. Prato
In Materials Chemistry
- K. Novoselov
- Andrea C. Ferrari
- Zhenhua Ni
- A. Jorio
- A. Di Bartolomeo
- I. Kinloch
- R. Young
- D. Papageorgiou
Citations in the corpus
- Mechanical properties of graphene and graphene-based nanocomposites (2017, background): “[193], while the presence of a water layer between the substrate and graphene can lead to strong p-doping [194].”
- High-quality and efficient transfer of large-area graphene films onto different substrates (2013, background): “[23] Casiraghi C, Pisana S, Novoselov KS, Geim AK, Ferrari AC.”
- Experimental Review of Graphene (2011, background): “1%, though increases to 2% for 10 layers [167].”