Low-temperature synthesis of large-area CN x nanotube arrays

Dali Qian, Rodney Andrews, David Jacques, Padmakar Kichambare, Guoda Lian, Elizabeth C. Dickey

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


Well-aligned nitrogen-doped multiwall carbon nanotube arrays have been successfully grown over large areas on quartz and silicon wafers by floating-catalyst chemical vapor deposition at low temperatures (600°C). These nitrogen-including nanotubes, derived from pyridine-ferrocene mixtures, have smaller outer diameters but larger inner diameters compared with carbon nanotubes grown from a xylene-ferrocene mixture under similar conditions. The N-doped nanotubes exhibit bamboo-like structures in the core. Elemental analysis and electron energy loss spectroscopy analysis show that the as-prepared nanotubes contain as much as 2.62 wt.% N, with most of the N concentrated in the inner few shells of the nanotube. Such large-scale arrays of well-aligned N-doped nanotubes on silicon wafers have a current density as high as 23.8 mA/cm 2 at an applied electric field of 17 V/μm, which can be further improved by patterning the tubes and coating the silicon substrate with a conductive thin metal film for the fabrication of flat panel displays.

Original languageEnglish
Pages (from-to)93-97
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number1-2
StatePublished - Feb 2003


  • Alignment
  • Characterizations
  • Doping
  • Field Emission
  • Nanotubes
  • Pyrolysis

ASJC Scopus subject areas

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


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