Copper foil thickness: 25 micron
We offer graphene films that are predominantly single-layer graphene. These graphene films are grown on copper foil and continuous across copper surface steps and grain boundaries. Graphene is grown on both sides of the copper foil. If you require specifically graphene on one side only, please contact us directly.
Etching of the underlying copper foil allows the carbon films to be transferred to other substrates such as glass, silicon dioxide or plastic films.
To the best of our knowledge, there is no report of degradation of the CVD graphene over time when it is kept in a safe, dry place. The copper foil with single-layer graphene can exhibit some coloration due to slow oxidation of the copper foil, which does not affect the quality of the graphene film.
SEM Image of Single Layer Graphene on Copper. Graphene is visible as the ridges.
Typical Raman spectrum of a single layer film transferred on silicon dioxide
The most prominent features of the Raman spectrum of graphene are: a) the D-line, located at 1350 1/cm, b) G-line at 1580 1/cm and c) 2D-line (or G’-line) located at ~2675 1/cm. The number of microscopic defects in the graphene can be determined by the intensity of the D-line. The spectrum of perfect, defect-free graphene does not have a D-line. The D-line can also originate from the grain boundaries, chemical doping, and several other factors. We consider single-layer graphene to be of appropriate quality if the ratio of the intensities of the D and G lines does not exceed 0.1.
- Graphene electronics
- Conductive coatings
- Aerospace industry
- Support for metallic catalysts
- MEMS and NEMS
- Chemical and bio sensors
- Multifunctional Materials Based on Graphene
- Graphene Research
- Graphene Transfer. See our Graphene Transfer Guide for more details.
We welcome custom orders. Contact us to discuss your project today!
Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
Science 5 June 2009: Vol. 324. no. 5932, pp. 1312 - 1314
Xuesong Li, Weiwei Cai, Jinho An, Seyoung Kim, Junghyo Nah, Dongxing Yang, Richard Piner, Aruna Velamakanni, Inhwa Jung, Emanuel Tutuc, Sanjay K. Banerjee, Luigi Colombo,, Rodney S. Ruoff
Roll-to-roll production of 30-inch graphene films for transparent electrodes
Nature Nanotechnology 5 , 574–578 (2010)
Sukang Bae, Hyeongkeun Kim, Youngbin Lee, Xiangfan Xu, Jae-Sung Park, Yi Zheng, Jayakumar Balakrishnan, Tian Lei, Hye Ri Kim, Young Il Song, Young-Jin Kim, Kwang S. Kim, Barbaros Özyilmaz, Jong-Hyun Ahn, Byung Hee Hong & Sumio Iijima
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