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Versatile polymer-free graphene transfer method and applications

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Zhang, Guohui, Guell, Aleix G., Kirkman, Paul M., Lazenby, Robert A., Miller, Thomas S. and Unwin, Patrick R. (2016) Versatile polymer-free graphene transfer method and applications. ACS Applied Materials & Interfaces, 8 (12). pp. 8008-8016. doi:10.1021/acsami.6b00681

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Official URL: http://dx.doi.org/10.1021/acsami.6b00681

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Abstract

A new method for transferring chemical vapor deposition (CVD)-grown monolayer graphene to a variety of substrates is described. The method makes use of an organic/aqueous biphasic configuration, avoiding the use of any polymeric materials that can cause severe contamination problems. The graphene-coated copper foil sample (on which graphene was grown) sits at the interface between hexane and an aqueous etching solution of ammonium persulfate to remove the copper. With the aid of an Si/SiO2 substrate, the graphene layer is then transferred to a second hexane/water interface to remove etching products. From this new location, CVD graphene is readily transferred to arbitrary substrates, including three-dimensional architectures as represented by atomic force microscopy (AFM) tips and transmission electron microscopy (TEM) grids. Graphene produces a conformal layer on AFM tips, to the very end, allowing easy production of tips for conductive AFM imaging. Graphene transferred to copper TEM grids provides large-area, highly electron-transparent substrates for TEM imaging. These substrates can also be used as working electrodes for electrochemistry and high-resolution wetting studies. By using scanning electrochemical cell microscopy, it is possible to make electrochemical and wetting measurements at either a freestanding graphene film or a copper-supported graphene area and readily determine any differences in behavior.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Q Science > QH Natural history
Divisions: Faculty of Science > Chemistry
Library of Congress Subject Headings (LCSH): Electrochemistry, Atomic force microscopy, Transmission electron microscopy
Journal or Publication Title: ACS Applied Materials & Interfaces
Publisher: American Chemical Society
ISSN: 1944-8244
Official Date: 30 March 2016
Dates:
DateEvent
30 March 2016Published
8 March 2016Available
8 March 2016Accepted
18 January 2016Submitted
Volume: 8
Number: 12
Page Range: pp. 8008-8016
DOI: 10.1021/acsami.6b00681
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: University of Warwick Chancellor’s Interational Scholarship, Engineering and Physical Sciences Research Council (EPSRC), European Research Council (ERC), Birmingham Science City, Advantage West Midlands (AWM), European Regional Development Fund (ERDF)
Grant number: EP/H023909/1 (EPSRC), ERC-2009-AdG 247143-QUANTIF (ERC)

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