Large-scale graphene micropatterns via self-assembly-mediated process for flexible device application

Taeyoung Kim, Hyeongkeun Kim, Soon Woo Kwon, Yena Kim, Won Kyu Park, Dae Ho Yoon, A. Rang Jang, Hyeon Suk Shin, Kwang S. Suh, Woo Seok Yang

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

We report on a method for the large-scale production of graphene micropatterns by a self-assembly mediated process. The evaporation-induced self-assembly technique was engineered to produce highly ordered graphene patterns on flexible substrates in a simplified and scalable manner. The crossed stripe graphene patterns have been produced over a large area with regions consisting of single- and two-layer graphene. Based on these graphene patterns, flexible graphene-based field effect transistors have been fabricated with an ion-gel gate dielectric, which operates at low voltages of < 2 V with a hole and electron mobility of 214 and 106 cm 2/V·s, respectively. The self-assembly approach described here may pave the way for the nonlithographic production of graphene patterns, which is scalable to large areas and compatible with roll-to-roll system.

Original languageEnglish
Pages (from-to)743-748
Number of pages6
JournalNano Letters
Volume12
Issue number2
DOIs
Publication statusPublished - 2012 Feb 8

Keywords

  • Graphene
  • field effect transistor
  • flexible electronics
  • large-area
  • patterning
  • self-assembly

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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