4.8 Article

Clean Transfer of Graphene for Isolation and Suspension

Journal

ACS NANO
Volume 5, Issue 3, Pages 2362-2368

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/nn200105j

Keywords

graphene; suspension; isolation; PMMA; clean transfer

Funding

  1. JST-CREST
  2. MEXT [19054017]
  3. NTHU
  4. TSMC JDP [NTHU0905]
  5. Taiwan National Science Council [NSC 97-2112-M-007-016-MY3]

Ask authors/readers for more resources

Fabrication of large-area clean graphene sheets is the first step toward the development of high-performance applications In surface chemistry and biotechnology as well as In high mobility electronics Here we demonstrate the clean transfer of graphene grown by chemical vapor deposition on Cu foil, with surface cleanness defined by transmission electron microscopy (TEM) in combination with Raman Scattering on the same position of suspended graphene sheets. For clean graphene, the Raman spectra exhibit distinctive features that can explicitly discriminate from that of graphene covered with a thin layer of amorphous carbon such as residual poly(methyl methacrylate) (PMMA). By applying this technique to graphene sheets with various degrees of surface cleanness, we show that the quantitative characterization, of the thickness, of surface contaminants is possible based on multiple reflections and interference of light in samples.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available