Graphene process flow

We are working on producing graphene by Chemical Vapor Deposition (CVD) method. This enables large scale synthesis of Graphene.


 


Graphene synthesis

Cu foil plays as a substrate and a catalyst at the same time.

Furnace to grow Graphene    
Cu foil with (left) and without (right) graphene  

Graphene isolating

Transfering: PMMA spin coating, Cu etchant


Graphene characterizing   

Optical microscope image shows copper’s grains formed after heating treatment            

SEM image of Graphene on Cu substrate



Graphene applications

Gas sensors
QCM
Bio sensors
Solar cells

References


  1. Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Zhang, Y., Dubonos, S. V., Grigorieva, I. V., and Firsov, A. A.: Electric Field Effect in Atomically Thin Carbon Films, Science, 2004, 306, 666–669
  2. Bae, S.; Kim, H.; Lee, Y.; Xu, X.; Park, J.-S.; Zheng, Y.; Balakrishnan, J.; Lei, T.; Ri Kim, H.; Song, Y. I.; Kim, Y.-J.; Kim, K. S.; Ozyilmaz, B.; Ahn, J.-H.; Hong, B. H. & Iijima, S. Roll-to-roll production of 30-inch graphene films for transparent electrodes, Nat Nano, Nature Publishing Group, 2010, 5,  574-578
  3. Li, X. et al. Large-area synthesis of high-quality and uniform graphene films on copper foils. Science, 2009, 324, 1312–1314