Cart 0
Monolayer Graphene on PET 4inches wafer


Monolayer Graphene on PET (4" Wafer)


Monolayer Graphene on PET (4" Wafer)

Our monolayer graphene on PET (4” wafer, fully covered) is produced by CVD and transferred to a circular substrate of PET (175 μm thickness) by a wet transfer process.

Its quality, shape, size and applications make it a benchmark product in the graphene market.


Graphene Film

  • · Transparency: > 97%
  • · Coverage: > 95%
  • · Thickness (theorical): 0.345 nm
  • · FET Electron Mobility on Al2O3: 2000 cm2/Vs
  • · FET Electron Mobility on SiO2/Si: 4000 cm2/Vs
  • · Sheet Resistance: 580±50 Ohms/sq (1cm x 1cm)
  • · Grain size: Up to 10 μm

PET Substrate

  • · Thickness: 175 µm

Quality control

All our samples are subjected to a rigorous QC in order to ensure a high quality and reproducibility of the graphene.

  • · Raman Spectroscopy: I(G)/I(2D)<0.5; I(D)/I(G)<0.05
  • · Optical Microscopy inspection of each individual sample to ensure good transfer quality and purity
  • If your application requires more specific controls (AFM, SEM...) please do not hesitate to contact us.


Flexible displays for Organic Solar Cells, OLEDs, Opto Electronic Devices, ITO Replacement, Graphene Research


“High Efficiency Graphene solar Cells by Chemical Doping”, Nano Letters Publications; May 3, 2012, 12 (6), pp 2745-2750; doi: 10.1021/nl204414u

“Continuous, Highly Flexible, and Transparent Graphene Films by CVD for Organic Photovoltaics”, ACS Nano Publications, 2010, 4 (5), pp 2865-2873, doi: 10.1021/nn901587x

“Three dimensional graphene foam based transparent conductive electrodes in GaN based blue light-emitting diodes”, Applied Physics Letters, 2013, Vol. 102, Issue 16, 161902 (2013); doi: 10.1063/1.4801763



Frequently Asked Questions

A: It has to be done in a dry way. Two alternatives: 1) Use a diamond pen to cleave it, but then you can have some debris on the graphene due to the Si wafer cleavage 2) In order to protect it from the debris, you can cleave it using a protective layer such as the PMMA on top of graphene. After cut it with a diamond pen remove the PMMA with solvents. In this case, we can provide you the sample with the PMMA already on top.

A: Usually additional cleaning process is not needed to obtain good electronics results using our graphene directly. If additional cleaning is needed a "thermal annealing" can be applied, typically at 350-400C under inert atmosphere for 30mins but this recipe depends on the annealing oven to be used.

A: The electron mobility values depend heavily on the method used to determine them but typical Hall mobility values for our graphene samples are around 2000-2700 cm^2/Vs with very good uniformity. These mobility values apply to your samples as well since they were manufactured using the same methods (recipe, transfer, etc.).

Questions and answers about this Product

Do you have any question? Make it here

More from this collection

Subscribe to our newsletter