Field emission from graphene based composite thin films

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Eda G., Unalan H. E. , Rupesinghe N., Amaratunga G. A. J. , Chhowalla M.

APPLIED PHYSICS LETTERS, vol.93, no.23, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93 Issue: 23
  • Publication Date: 2008
  • Doi Number: 10.1063/1.3028339
  • Title of Journal : APPLIED PHYSICS LETTERS
  • Keywords: carbon, field emission, nanocomposites, nanostructured materials, polymer films, ELECTRON-EMISSION, CARBON, OXIDE, TRANSPARENT, NANOTUBES, TRANSPORT


Field emission from graphene is challenging because the existing deposition methods lead to sheets that lay flat on the substrate surface, which limits the field enhancement. Here we describe a simple and general solution based method for the deposition of field emitting graphene/polymer composite thin films. The graphene sheets are oriented at some angles with respect to the substrate surface leading to field emission at low threshold fields (similar to 4 V mu m(-1)). Our method provides a route for the deposition of graphene based thin film field emitter on different substrates, opening up avenues for a variety of applications.