MSE PRO 1 in x 1 in Monolayer Graphene Film on 500um Quartz Substrate

Description for 1 in x 1 in Monolayer Graphene Film on 500um Quartz Substrate Grown by CVD on copper foil and transferred to quartz using wet transfer process. Contrary to widely-held beliefs, graphene's hydrophobicity is strongly thickness-dependent, with single-layer graphene being significantly more hydrophilic than its thicker counterparts (click on this link for more information). SKU# ME0601 Graphene FILM Features Transparency: > 97% Coverage: > 98% Thickness (theorical): 0.345 nm FET Electron Mobility on Al2O3: 2000 cm2/Vs FET Electron Mobility on SiO2/Si: 4000 cm2/Vs Sheet Resistance: 360 +/- 30 Ohms/sq (1cm x 1cm) Grain size: Up to 20 um Quartz Substrate Thickness: 500 um Flatness; Bow: 20 um, Warp: 30 um Roughness: 6 (on the polished side) Polished: Double side 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. 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. Applications Flexible displays, ITO replacement, Graphene research Publications Photoexcitation cascade and multiple hot-carrier generation in graphene. Nature Physics 2013, vol.9, page 248 -252; doi: 10.1038/nphys2564 "Graphene Position Paper", Nanonewsletter, December 2011 FREQUENTLY ASKED QUESTIONS Q: How to cut the wafer (to cleave it) if you are planning to cleave the wafer once the graphene is already transferred 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. Q: Additional cleaning is needed when I receive the Graphene? 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. Q: What are the values measured for the electron mobility in the Graphene layer? 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 cm2/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.).