English, Article edition: ANNEALING TEMPERATURE EFFECT ON THE FIELD EMISSION PROPERTIES OF CARBON NANOTUBE FILMS T. CHEN; Z. SUN; L. L. WANG; ...

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Physical Description
  • article
Language
  • English

Edition details

Title
  • ANNEALING TEMPERATURE EFFECT ON THE FIELD EMISSION PROPERTIES OF CARBON NANOTUBE FILMS
Author
  • T. CHEN
  • Z. SUN
  • L. L. WANG
  • Y. W. CHEN
  • P. S. GUO
  • W. X. QUE
Physical Description
  • article
Notes
  • As the carbon nanotubes (CNTs) films are applied to the field emission cathodes in the vacuum devices, heat treatment in the range of 400°Câ500°C is often conducted during the device sealing process, especially for glass-based devices. The annealing temperature effect on the field emission of the CNT films prepared by chemical vapor deposition is investigated. The CNT film annealed at 400°C in air contains less amorphous carbon phase, and shows better field emission properties comparing to the as-grown CNT film. Annealing at 450°C causes serious oxidative damage along the tube walls, resulting in the poor field emission performance. The CNTs annealed at 500°C are all burned out. The experiment shows that the sealing temperature at 400°C or below can be conducted in air, while the sealing temperature above 400°C should be done in N2 or Ar ambient.
  • RePEc:wsi:srlxxx:v:14:y:2007:i:05:p:969-972
Language
  • English
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