Patterning Nanoroads and Quantum Dots on Fluorinated Graphene

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 C${}_4$F) 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

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• Structure and Stability of Two Dimensional Phosphorene with =O or =NH Functionalization
• Band Gaps in Jagged and Straight Graphene Nanoribbons Tunable by an External Electric Field
• Impurity State and Variable Range Hopping Conduction in Graphene
• Patterning graphene nanostripes in substrate-supported functionalized graphene: A promising route to integrated, robust, and superior transistors
• Highly Fluorinated Graphene
• Spin-asymmetric graphene nanoribbons in graphane on silicon dioxide
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• The scaling of the microLED and the advantage of 2D materials
• Fluorographene with Impurities as a Biomimetic Light-Harvesting Medium
• Structure and energetics of hydrogen chemisorbed on a single graphene layer to produce graphane