한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Effects of Environmental Gases on Emission Current in Carbon Nanotube

  • Kim, T.S. (School of Material Science and Engineering, Pusan National University) ;
  • Ahn, B.K. (School of Material Science and Engineering, Pusan National University) ;
  • Kim, D.H. (School of Material Science and Engineering, Pusan National University) ;
  • Shin, H.Y. (School of Material Science and Engineering, Pusan National University) ;
  • Seong, M.S. (School of Material Science and Engineering, Pusan National University) ;
  • Cho, Y.R. (School of Material Science and Engineering, Pusan National University)
  • Published : 2004.08.23
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Abstract

The dependence of environmental gases such as Ar, $O_2$ on the emission current from carbon nanotube emitters was examined in this study. Based on our experiments, the current density is decreased in single-wall carbon nanotubes (SWNTs), but is increased in multi-wall carbon nanotubes (MWNTs) as the vacuum level decreases from $10^{-7}$ Torr to $10^{-4}$ Torr by the inflow purging gases. The current density subsequently recovered as the vacuum level increased to $10^{-7}$ Torr when gas inflow stopped. From those results, we conclude that the MWNTs have completely different degradation characteristics in comparison to SWNTs excluding the effect of binder materials.

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