A chemical route to graphene for device applications

Scott Gilje, Song Han, Minsheng Wang, Kang L. Wang, Richard B. Kaner

Research output: Contribution to journalArticlepeer-review

1685 Citations (Scopus)

Abstract

Oxidation of graphite produces graphite oxide, which is dispersible in water as individual platelets. After deposition onto Si/SiO 2 substrates, chemical reduction produces graphene sheets. Electrical conductivity measurements indicate a 10000-fold increase in conductivity after chemical reduction to graphene. Tapping mode atomic force microscopy measurements show one to two layer graphene steps. Electrodes patterned onto a reduced graphite oxide film demonstrate a field effect response when the gate voltage is varied from +15 to -15 V. Temperature-dependent conductivity indicates that the graphene-like sheets exhibit semiconducting behavior.

Original languageEnglish
Pages (from-to)3394-3398
Number of pages5
JournalNano letters
Volume7
Issue number11
DOIs
Publication statusPublished - 2007 Nov

All Science Journal Classification (ASJC) codes

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

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