Monolayer CVD Graphene Films on PET for R&D Applications

This article describes the range of graphene films on polyethylene terephthalate polymer (PET) available from Graphenea. These films include monolayer graphene on PET (10 mm x 10 mm) - Pack 4 units, monolayer graphene on PET (25 mm x 25 mm), and monolayer graphene on PET (4" wafer).

Monolayer Graphene on PET

Graphenea’s monolayer graphene on PET is grown by means of a chemical vapor deposition (CVD) process on a copper foil, and later transferred to PET through a wet transfer process.

These graphene samples are available in a pack of 4 10mm squares (Figure 1), or a single 25 mm square (Figure 2). Their size and exceptional quality makes these products ideal for universities and research and development departments.

Figure 1. Monolayer graphene on PET (10 mm x 10 mm)

Figure 2. Monolayer graphene on PET (25 mm x 25 mm)

Monolayer Graphene on PET (4" Wafer)

Similar to other graphene films, this product includes a single layer of graphene film (Figure 3) produced through by the CVD process and transferred to a round substrate of PET measuring 175 µm thick using a wet transfer process.

This product sets a new standard in the graphene market, with its high quality and standard wafer form factor making it ideal for research and development into graphene-based devices.

Figure 3. Monolayer Graphene on PET 4" wafer

Features of Monolayer Graphene Films

The key features of monolayer graphene films are as follows:

• Growth method: CVD synthesis
• Coverage: > 95%
• Appearance (color): Transparent
• Transparency: > 97%
• Number of graphene layers: 1
• Thickness (theorical): 0.345 nm
• FET electron mobility on Al₂O₃: 2000 cm²/Vs (FET electron mobility is 2800 cm²/Vs for monolayer graphene on PET (25 mm x 25 mm)
• Hall mobility on SiO₂/Si: 4000 cm²/Vs (Hall mobility is 3500 cm²/Vs for monolayer graphene on PET (25 mm x 25 mm)
• Sheet resistance: 580±50 Ω/sq (1 cm x 1 cm)
• Grain size: Up to 10 µm
• Thickness of PET substrate: 175 µm

Applications

Monolayer graphene films can be used in the following applications:

• Graphene research
• OLEDs
• Opto electronic devices
• Flexible displays for organic solar cells
• ITO replacement

Quality Control

All samples supplied by Graphenea go through a meticulous QC process to make sure that the graphene produced is of high quality and has good reproducibility. Each individual sample is examined by Raman spectroscopy (I(G)/I(2D)<0.5; I (D)/I(G)<0.05) and optical microscopy techniques to ensure high transfer quality and purity.

Graphenea also provides customized solutions for applications requiring additional specific controls such as scanning electron microscopy (SEM) and atomic electron microscopy (AFM).

This information has been sourced, reviewed and adapted from materials provided by Graphenea.

For more information on this source, please visit Graphenea.