Improved electrical conductivity of a non-covalently dispersed graphene-carbon nanotube film by chemical p-type doping

Woo Soon Jang, Soo Sang Chae, Se Jong Lee, Kie Moon Song, Hong Koo Baik

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Using a high-pressure air spray we developed a method to deposit electrically-conducting thin films consisting of non-covalently dispersed graphene and carbon nanotubes. The graphene-carbon nanotube film was immersed in a nitric acid and followed by exposure to fuming nitric acid. The acid treatment induced an increased concentration of atomic nitrogen on the graphene basal plane and carbon nanotube sidewall. This result indicates chemical p-type doping of the graphene oxide-carbon nanotube film. After the two acid treatments, the spray coated graphene oxide-carbon nanotube films on a glass substrate exhibit a low sheet resistance of 171 Ω/sq, and a high transmittance of 84% at a wavelength of 550 nm.

Original languageEnglish
Pages (from-to)943-951
Number of pages9
JournalCarbon
Volume50
Issue number3
DOIs
Publication statusPublished - 2012 Mar

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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