Ultraconformal contact transfer of monolayer graphene on metal to various substrates

Wonsuk Jung, Donghwan Kim, Mingu Lee, Soohyun Kim, Jae Hyun Kim, Chang-Soo Han

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

A high quality large graphene sheet has been synthesized on metal foils based on a chemical vapor deposition process [1,2]and extensively investigated for research and industrial purposes as a promising material having outstanding properties such as high intrinsic carrier mobility [3]and high optical transparency. [4]In order to fabricate graphene-based devices, the fi rst step is the transfer of graphene on metal to the target substrate. However, the transfer technologies [3-11]used for graphene require improvement in terms of speed,[6]amount of defects, and realizing a clean and easy transfer process for large size graphene.[5,12,13]Here, we demonstrate clean and dry transfer of monolayer graphene of 7 × 7 cm 2 by ultraconformal contact of the graphene with the target substrate using a mechano-electro-thermal process, which enables direct detachment of the graphene from a Cu substrate. We directly transferred the monolayer graphene from Cu foils onto PET, PDMS, and glass, respectively, without any additional carrier layers or metal etching process. In addition, the transferred graphene strongly adhered to the substrate and was free from physical contaminants and damage over its entire area. To demonstrate the strengths of the proposed method, we characterized the mechanical and electrical stability of a graphene film electrode using a reliability test under elevated temperature and humidity.

Original languageEnglish
Pages (from-to)6394-6400
Number of pages7
JournalAdvanced Materials
Volume26
Issue number37
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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