Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Field Emission Characteristic of Titanium-Coated Carbon Nanotube

티타늄이 코팅된 탄소나노튜브의 전계방출특성

  • Lee, Seung-Yeon (Department of Electronics Engineering, Sejong University) ;
  • Uh, Hyung-Soo (Department of Electronics Engineering, Sejong University) ;
  • Park, Sang-Sik (Department of Electronics Engineering, Sejong University)
  • Published : 2010.06.16
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Abstract

The effect of titanium (Ti) coating over the surface of carbon nanotubes (CNTs) on field emission characteristics was investigated. Since the work function of CNTs emitter is about 5.0 eV, field emission would be observed at lower voltage if this work function gets lower. Work function of Ti is approximately 4.09eV. Field emission characteristics of as-grown and Ti-coated CNTs were measured in a diode-type configuration. The resultant emission characteristics revealed that thin($50{\AA}$-thick) Ti-coated CNTs could be a better electron emitter with lower emission voltage and higher emission efficiency.

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