Patterning Nanoroads and Quantum Dots on Fluorinated Graphene
arXiv:1012.4217 · doi:10.1007/s12274-010-0084-7
Abstract
Using ab initio methods we have investigated the fluorination of graphene and find that different stoichiometric phases can be formed without a nucleation barrier, with the complete "2D-Teflon" CF phase being thermodynamically most stable. The fluorinated graphene is an insulator and turns out to be a perfect matrix-host for patterning nanoroads and quantum dots of pristine graphene. The electronic and magnetic properties of the nanoroads can be tuned by varying the edge orientation and width. The energy gaps between the highest occupied and lowest unoccupied molecular orbitals (HOMO-LUMO) of quantum dots are size-dependent and show a confinement typical of Dirac fermions. Furthermore, we study the effect of different basic coverage of F on graphene (with stoichiometries CF and CF) on the band gaps, and show the suitability of these materials to host quantum dots of graphene with unique electronic properties.
12 pages, 7 figures, 1 table
References in corpus (15)
- Electric Field Effect in Atomically Thin Carbon Films
- Energy Band Gap Engineering of Graphene Nanoribbons
- Energy Gaps in Graphene Nanoribbons
- Control of graphene's properties by reversible hydrogenation
- Chaotic Dirac billiard in graphene quantum dots
- Graphane: a two-dimensional hydrocarbon
- Graphene Nano-Ribbon Electronics
- Fluorographene: Two Dimensional Counterpart of Teflon
- Spin qubits in graphene quantum dots
- Peculiar Width Dependence of the Electronic Property of Carbon Nanoribbons
- Crystallographic Etching of Few-Layer Graphene
- Metallic Graphene Nanodisks
- Graphene to Graphane: A Theoretical Study
- Quasi-bound states of quantum dots in single and bilayer graphene
- Graphene Nanoribbon and Graphene Nanodisk