Patterning Nanoroads and Quantum Dots on Fluorinated Graphene

Details Patterning Nanoroads and Quantum Dots on Fluorinated Graphene Patterning Nanoroads and Quantum Dots on Fluorinated Graphene

2010-12-19

arxiv.org/abs/1012.4217v2

Nano Research, 4 (1), 143-152, 2011

Physics

Condensed Matter

Materials Science

12 pages, 7 figures, 1 table

Scientific paper

10.1007/s12274-010-0084-7

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 C$_{4}$F) on the band gaps, and show the suitability of these materials to host quantum dots of graphene with unique electronic properties.

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