Raman spectroscopy of nanoscale honeycomb carbon structures. A.M. ZIATDINOV

Abstract

Raman spectroscopy of nanoscale honeycomb carbon structures. A.M. ZIATDINOV (Institute of Chemistry, FEB RAS, Vladivostok).

Raman spectra of carbon materials are sensitive to their structural organization. For this reason, Raman spectroscopy has become one of the most popular and effective tools in carbon science and metrology. For example, based on the qualitative and quantitative characteristics of the Raman spectra of planar honeycomb structures of sp2-hybridized carbon, one can identify graphene, multilayer graphene, graphite and also distinguish between perfect and defective ones, including turbostratic modifications. In addition, Raman spectroscopy makes it possible to determine the dominant type of defect in these structures, the sizes of atomically organized regions in them, the atomic geometry of the boundaries of such formations, the number and type of stacking of carbon layers in multilayer graphenes, the ratio of sample volumes with different types of layer stacking, and other important characteristics of materials. In this review, we consider our own and literature data on Raman spectroscopy of various planar honeycomb structures of sp2-hybridized carbon and their derivatives with nanometric lateral sizes, and also discuss the advantages and disadvantages of the known methods for analyzing Raman spectra of such structures.