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Patterning Nanoroads and Quantum Dots on Fluorinated Graphene

Ribas, Morgana A and Singh, Abhishek K and Sorokin, Pavel B and Yakobson, Boris I (2011) Patterning Nanoroads and Quantum Dots on Fluorinated Graphene. In: Nano Research, 4 (1). pp. 143-152.

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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 C4F) on the band gaps, and show the suitability of these materials to host quantum dots of graphene with unique electronic properties.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: ePrints Administrator ePrints@IISc
Date Deposited: 24 Jan 2011 11:04
Last Modified: 24 Jan 2011 11:04
URI: http://eprints.iisc.ac.in/id/eprint/35255

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