ABSTRACT
A systematic study is conducted on the fluorination-enriched essential properties of two-dimensional graphene and one-dimensional graphene nanoribbons using the first-principles method. The stable adsorption position of F atoms on graphene is determined by comparing the binding energies, in which the lower value corresponds to higher stability. The possession of remarkable properties enables use of fluorinated graphenes in many promising applications. On the experimental aspects, a scanning tunneling microscope, an useful tool for imaging surfaces at atomic level with a good resolution, has been successfully utilized to identify the unique geometric structures of graphene-related systems, including graphite, graphene, graphene compounds, carbon nanotubes, and Graphene nanoribbons. Fluorinated graphene belongs either to the p-type metals or to the large-gap semiconductors, depending on the concentration and distribution of adatoms. The latter is obtained by subtracting the charge density of pristine graphene and F adatoms from that of fluorinated graphene system.
