Electron emission from microwave-plasma chemically vapor deposited carbon nanotubes

Y. Tzeng, C. Liu, C. Cutshaw, Z. Chen

研究成果: Conference article

1 引文 斯高帕斯(Scopus)

摘要

A microwave plasma CVD reactor was used for the deposition of carbon nanotubes on substrates, Hydrocarbon or oxyhydrocarbon mixtures were used as the carbon source. Hot electrons in the microwave plasma at temperatures exceeding 10,000C provided a means of dissociating the vapor or gas feedstock, heating the substrate, and allowing gas species to react in the gas phase as well as on the surface of the substrate leading to the deposition of desired carbon coatings. A high vacuum chamber was used to characterize the electron emission properties of these carbon nanotube coatings using a one-millimeter diameter tungsten rod with a hemispherical tip as the anode while the carbon nanotube coatings served as the cathode. The current-voltage characteristics of the carbon nanotube coatings were measured and used for calculating the electric field at which electron emission turned on as well as calculating the field enhancement factor of the carbon nanotubes. Field emission of electrons from carbon nanotubes starting from an electric field lower than 1 volt per micrometer has been achieved.

原文English
頁(從 - 到)R731-R736
期刊Materials Research Society Symposium - Proceedings
621
出版狀態Published - 2000 十二月 1
事件Electron-Emissive Materials, Vacuum Microelectronics and Flat-Panel Displays - San Francisco, CA, United States
持續時間: 2000 四月 252000 四月 27

    指紋

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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