Consisting in a two-dimensional hexagonal network of sp2-hybridized carbon atoms, graphene exhibits unprecedented features that could be exploited in multiple nanotechnological applications. Our research aims at the investigation of the synthesis of graphene, the tuning of its electronic properties by functionalization, etc., from both the theory and experiment sides.
Synthesis of graphene
Our group focuses on the graphene synthesis by différent techniques, including micromechanical exfoliation of graphite, epitaxial growth from C-terminated n-type 6H-SiC(000-1) wafers and Chemical Vapor Deposition (CVD) growth, and its characterization.
Functionalization of graphene
The functionalization or doping of graphene aims at tuning its electronic properties by opening a energy gap, main challenge for possible electronic applications. The functionalization evidence is highlighted using X-ray Photoemission Spectroscopy (XPS), Scanning Tunneling Microscopy (STM), Scanning X-ray Photoelectron Microscopy (SPEM) or Angle Resolved Photoemission Spectroscopy (ARPES).
Electrodynamics of quasi-particles (plasmons, excitons) in graphene
Graphene is known to be a support for quasi-particles such as plasmons or excitons. Those modes present many interests to design sensors, electro-optic light modulator, etc.. A part of our research work centres around model building to describe electrodynamics in graphene.
Shielding effect of graphene/polymer multilayer materials
The shielding efficiency of heterostructures composed of polymer/graphene multilayers against electromagnetic radiations is studied.
Simulations on graphene structures (defects, doping, etc.)
Chemical doping and structural modification are key methods to tailor the electronic and optical properties of graphene. We performed tight-binding and ab-initio simulations to predict the electronic properties of modified graphene and confront our results with experimental results (STM, Raman, XPS) inside ou outside the CARBONNAGe research group.
Simulations on growth mechanism of graphene
The project aims at the investigation, at the atomic level and by multiscale simulations, of the mechanism of growth of pristine and chemically doped graphene.
Quantum chemical design of nanographenes with remarkable linear and nonlinear optical properties
Our research topic deals with polycyclic aromatic hydrocarbons, also called nanographenes, in order to achieve remarkable linear and nonlinear optical properties
Other works on Graphene
Different recent works realized on graphene are summarized in this last part.