Multi-wavelength Raman response of disordered graphitic materials: models and simulations

A model for the simulation and the interpretation of the Raman response of structurally complex carbon materials (amorphous carbon, microcrystalline graphites, disordered and nanostructured graphites) is presented. It is based on a molecular description of the material in terms of “graphitic domains...

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Bibliographic Details
Published in:Synthetic metals 2003-10, Vol.139 (3), p.885-888
Main Authors: Castiglioni, C., Di Donato, E., Tommasini, M., Negri, F., Zerbi, G.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Disordered solids
Exact sciences and technology
Graphite and related compounds
Infrared and raman spectra and scattering
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Physics
Raman spectroscopy
Semi-empirical models and model calculations
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Summary:A model for the simulation and the interpretation of the Raman response of structurally complex carbon materials (amorphous carbon, microcrystalline graphites, disordered and nanostructured graphites) is presented. It is based on a molecular description of the material in terms of “graphitic domains”. These are characterized by the confinement of the π electrons in two dimensions and are mimicked by using Polycyclic Aromatic Hydrocarbons. The model successfully accounts for the observed dispersion of the D line frequency in the Raman spectra of disordered graphitic materials.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(03)00305-9