University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Density controlled conductivity of pristine graphene films

Fahimi, A, Jurewicz, I, Sharrock, CS, Bradley, DA, Dalton, AB, Smith, RJ, Coleman, JN and Henley, SJ (2013) Density controlled conductivity of pristine graphene films Carbon.

[img] Text (licence)
SRI_deposit_agreement.pdf
Restricted to Repository staff only

Download (33kB)

Abstract

Single or few layer graphene can be considered an exciting pseudo-two-dimensional molecular material that potentially has a wide range of applications. A critical bottleneck may arise with issues in their controlled assembly into macroscopic ensembles over large areas both in two and three dimensions. Langmuir-type assembly is a particularly useful method to control and manipulate the distribution of graphene at the air-water interface via edge-edge interactions. In this study, pristine graphene suspended in organic solvent was prepared through adaptation of a previously developed process involving the non-invasive exfoliation of graphite. Successful deposition of graphene at the air-water interface was achieved by manipulating the vapor-pressure of the graphene dispersion through solvent mixing. Through careful control of density, by following the pressure-area isotherm during monolayer compression, it is possible to precisely tune the electrical conductivity. The resulting assemblies can be easily transferred to glass and other substrates using the Langmuir-Schaefer horizontal deposition method producing thin films with tunable electrical conductivity that exhibits percolation-type behavior. A major advantage of this process is that the conducting films require no further treatment unlike their graphene-oxide counterparts. Moreover, the physical properties of these assemblies can be easily controlled which is a precursor for graphene-based electronic applications. © 2013 Elsevier Ltd. All rights reserved.

Item Type: Article
Authors :
NameEmailORCID
Fahimi, AUNSPECIFIEDUNSPECIFIED
Jurewicz, IUNSPECIFIEDUNSPECIFIED
Sharrock, CSUNSPECIFIEDUNSPECIFIED
Bradley, DAUNSPECIFIEDUNSPECIFIED
Dalton, ABUNSPECIFIEDUNSPECIFIED
Smith, RJUNSPECIFIEDUNSPECIFIED
Coleman, JNUNSPECIFIEDUNSPECIFIED
Henley, SJUNSPECIFIEDUNSPECIFIED
Date : 2013
Identification Number : 10.1016/j.carbon.2013.07.096
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 15:28
Last Modified : 31 Oct 2017 15:12
URI: http://epubs.surrey.ac.uk/id/eprint/799589

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800