Transfer of CVD-grown monolayer graphene onto arbitrary substrates

Ji Won Suk, Alexander Kitt, Carl W. Magnuson, Yufeng Hao, Samir Ahmed, Jinho An, Anna K. Swan, Bennett B. Goldberg, Rodney S. Ruoff*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

965 Scopus citations

Abstract

Reproducible dry and wet transfer techniques were developed to improve the transfer of large-area monolayer graphene grown on copper foils by chemical vapor deposition (CVD). The techniques reported here allow transfer onto three different classes of substrates: substrates covered with shallow depressions, perforated substrates, and flat substrates. A novel dry transfer technique was used to make graphene-sealed microchambers without trapping liquid inside. The dry transfer technique utilizes a polydimethylsiloxane frame that attaches to the poly(methyl methacrylate) spun over the graphene film, and the monolayer graphene was transferred onto shallow depressions with 300 nm depth. The improved wet transfer onto perforated substrates with 2.7 μm diameter holes yields 98% coverage of holes covered with continuous films, allowing the ready use of Raman spectroscopy and transmission electron microscopy to study the intrinsic properties of CVD-grown monolayer graphene. Additionally, monolayer graphene transferred onto flat substrates has fewer cracks and tears, as well as lower sheet resistance than previous transfer techniques. Monolayer graphene films transferred onto glass had a sheet resistance of ∼980 ω/sq and a transmittance of 97.6%. These transfer techniques open up possibilities for the fabrication of various graphene devices with unique configurations and enhanced performance.

Original languageEnglish (US)
Pages (from-to)6916-6924
Number of pages9
JournalACS nano
Volume5
Issue number9
DOIs
StatePublished - Sep 27 2011

Keywords

  • Raman spectroscopy
  • grapheme
  • membranes
  • transfer
  • transparent conductive films

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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