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, cilt.93, sa.23, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 93 Sayı: 23
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1063/1.3028339
  • Dergi Adı: APPLIED PHYSICS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: carbon, field emission, nanocomposites, nanostructured materials, polymer films, ELECTRON-EMISSION, CARBON, OXIDE, TRANSPARENT, NANOTUBES, TRANSPORT
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.