10 cm x 10 cm Monolayer Graphene Film on Cu Foil with PMMA Coating
Monolayer Graphene on Cu with PMMA Coating (10 cm x 10 cm)
A single-layer graphene film on a copper substrate. This product is provided with a PMMA coating on top of the Graphene in order ease the transfer process and to avoid contamination. It's a high quality product, with a great homogeneity, and it is ideal for R&D departments and universities.
- · Growth method: CVD synthesis
- · Appearance (color): Transparent
- · Transparency: > 97%
- · Coverage: > 95%
- · Number of graphene layers: 1
- · Thickness (theoretical): 0.345 nm
- · AFM Thickness (air @RT): <1nm
- · Electron Mobility on SiO2/Si: ≈1500 cm2/V·s
- · Sheet Resistance on SiO2/Si: 450±40 Ohms/sq (1cm x1cm)
- · Grain size: Up to 20 μm
Substrate Cu Foil
- · Thickness: 18 μm
- · Roughness: around 80 nm
- · Spin coated for high homogeneity
- · Thickness: 60 nm
- · PMMA model: 495K, A2
Flexible batteries, Electronics, Aerospace industry, MEMS and NEMS, Microactuators, Conductive coatings, Research
Ultrathin rechargeable all-solid-state batteries based on monolayer graphene, J. Mater. Chem. A, 2013,1, 3177-3181 DOI:10.1039/C3TA01183F
Fabrication and Electrochemical Characterization of Single and Multi-Layer Graphene Anodes for Lithium-Ion Batteries, J. electrochem. Soc. 2012, vol. 159, issue 6, A752 A761
A: PMMA is used as a protective layer, and this layer can be removed using organic solvents (acetone and IPA) or with thermal treatment. Our standard process is to remove the PMMA with solvents. As an alternative a thermal treatment can be done. This thermal treatment leaves less amount of residues, but the Raman spectra is modified due to the strain created during the treatment. Although the electrical properties of the graphene remain intact thermal treatment is avoided for not modifying Raman signal.
A: Graphene is transferred via wet process. In order to etch the copper, the graphene is protected with a sacrificial polymethyl methacrylate (PMMA) layer. A ferric chloride solution is used for etching. Once the etching is complete, the graphene is washed and transferred onto the desired substrate. Finally, the PMMA layer is removed using organic solvents.
A: The thickness is up to 200 nm but typically we use thinner PMMA
MSE Supplies guarantees the high quality and best price on the market for our graphene products. Buying graphene products from MSE Supplies will save you ~50% or more compared to prices listed by other re-sellers such as Sigma-Aldrich.
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