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Das, A., Pisana, S., Chakraborty, B., Piscanec, S., Saha, S.K., Waghmare, U.V., et al. (2008) Monitoring Dopants by Raman Scattering in an Electrochemically Top-Gated Graphene Transistor. Nature Nanotechnology, 3, 210-215.
https://doi.org/10.1038/nnano.2008.67

has been cited by the following article:

• TITLE: Effect of NaCl Highly Textured Crystalline Substrates on the Raman Response of Graphene

  AUTHORS: Rafael Antolin-Jimenez, Doroteo Mendoza López

  KEYWORDS: Graphene, Multilayer Graphene, NaCl, Raman Spectroscopy, Optical Contrast, Two-Dimensional Materials, Substrate Effects

  JOURNAL NAME: World Journal of Nano Science and Engineering, Vol.16 No.3, September 7, 2026

  ABSTRACT: The interaction between graphene and the substrate on which it is supported plays a fundamental role in determining its optical and electronic properties. In this work, multilayer graphene samples were synthesized through mechanical exfoliation and deposited onto conventional Si/SiO2 substrates and NaCl highly textured crystalline substrates. Optical contrast microscopy and Raman spectroscopy were employed to determine the number of graphene layers and to evaluate substrate-induced effects. Unlike graphene on Si/SiO2, graphene deposited on NaCl exhibited negative optical contrast and reduced wavelength dependence. Raman analysis revealed substrate dependent doping behavior: graphene on SiO2 presented predominant p-type doping, whereas graphene on NaCl showed a tendency toward n-type doping with strain contributions dominating the spectral shifts. Carrier concentrations were estimated to be on the order of 1012 cm−2. These results demonstrate the strong influence of ionic crystalline substrates on graphene properties and highlight NaCl as a promising platform for studying electrostatic substrate effects in two-dimensional materials.