Carbon nanowalls on graphite for cold cathode applications

Yonhua Tzeng, Chia Lung Chen, Yong Yi Chen, Chih Yi Liu

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


We demonstrate for the first time high performance carbon nanowall coated graphite cold cathodes. These graphite cold cathodes are capable of emitting high electron current density under low DC electric fields at room temperature. Carbon nanowalls with nanometer scale sharp edges are grown on graphite plates by means of DC plasma enhanced chemical vapor deposition in a gas mixture of methane and hydrogen. High performance cold cathodes are evaluated by means of measuring the electron field emission current density versus applied electric field (J-E), and examining the nano-graphite structures by SEM and Raman spectroscopy. Graphite is light weight, of high electrical and thermal conductivities, and chemically inert. It is expected that high performance and low cost graphite cold cathodes will find a broad spectrum of scientific and practical applications.

Original languageEnglish
Pages (from-to)201-204
Number of pages4
JournalDiamond and Related Materials
Issue number2-3
Publication statusPublished - 2010 Feb

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Materials Chemistry
  • Electrical and Electronic Engineering


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