Raman spectroscopy of graphite intercalation compounds

Author(s)
Julio C. Chacon-Torres, Ludger Wirtz, Thomas Pichler
Abstract

Graphite intercalation compounds (GICs) are an interesting and highly studied field since 1970’s. It has gained renewed interest since the discovery of superconductivity at high temperature for CaC6 and the rise of graphene. Intercalation is a technique used to introduce atoms or molecules into the structure of a host material. Intercalation of alkali metals in graphite has shown to be a controllable procedure recently used as a scalable technique for bulk production of graphene, and nano-ribbons by induced exfoliation of graphite. It also creates supra-molecular interactions between the host and the intercalant, inducing changes in the electronic, mechanical, and physical properties of the host. GICs are the mother system of intercalation also employed in fullerenes, carbon nanotubes, graphene, and carbon-composites. We will show how a combination of Raman and ab-initio calculations of the density and the electronic band structure in GICs can serve as a tool to elucidate the electronic structure, electron–phonon coupling, charge transfer, and lattice parameters of GICs and the graphene layers within. This knowledge of GICs is of high importance to understand superconductivity and to set the basis for applications with GICs, graphene and other nano-carbon based materials like nanocomposites in batteries and nanoelectronic devices.

Organisation(s)
Electronic Properties of Materials
External organisation(s)
University of Luxembourg, Freie Universität Berlin (FU)
Journal
Physica Status Solidi. B: Basic Research
Volume
251
Pages
2337-2355
No. of pages
19
ISSN
0370-1972
DOI
https://doi.org/10.1002/pssb.201451477
Publication date
12-2014
Peer reviewed
Yes
Austrian Fields of Science 2012
103020 Surface physics, 103018 Materials physics, 103009 Solid state physics
Keywords
ASJC Scopus subject areas
Electronic, Optical and Magnetic Materials, Condensed Matter Physics
Portal url
https://ucrisportal.univie.ac.at/en/publications/raman-spectroscopy-of-graphite-intercalation-compounds(9ee3ba2c-c5eb-47dd-8009-f81b09116082).html