The synthesis of graphene nanowalls on a diamond film on a silicon substrate by direct-current plasma chemical vapor deposition

Yonhua Tzeng, Wai Leong Chen, Chiahao Wu, Jui Yung Lo, Chiuan Yi Li

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Graphene nanowalls have been synthesized on diamond by direct-current plasma enhanced chemical vapor deposition (CVD) on silicon substrates pre-seeded with diamond nanoparticles in gas mixtures of methane and hydrogen. Switching from diamond CVD to graphene CVD is done by increasing the methane concentration and decreasing the plasma power without breaking the vacuum. Graphene nanowalls stand on the CVD diamond film to form a 3-dimensional network. Scanning electron microscopy, high-resolution transmission electron microscopy, UV and visible Raman scattering and electrochemical cyclic voltammetry measurements are used to characterize the multi-layer turbostratic graphitic carbon nanostructure and demonstrate its electrochemical durability with a low background current in a wide electrochemical potential window.

Original languageEnglish
Pages (from-to)120-129
Number of pages10
JournalCarbon
Volume53
DOIs
Publication statusPublished - 2013 Mar

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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