MSE PRO 4 in Monolayer Graphene Film on 250 um PET Substrate
Monolayer Graphene Film on PET Substrate (4" Wafer)
Our monolayer graphene on 4 inch PET (4" wafer, fully covered) is produced by CVD and transferred to a circular substrate of PET (250 um thickness) by a wet transfer process.
Its quality, shape, size and applications make it a benchmark product in the graphene market.
Graphene Film 4 in Wafer
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
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 350-400°C 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.).
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.