Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Comparison of stabilities in carbon nanotubes grown on a submicron-sized tip in terms of various buffer and catalyst materials

미세크기 팁 위에 성장된 탄소 나노튜브의 완충막 및 촉매 금속에 따른 안정성 비교

  • Kim, Jong-Pil (Dept. of Electronic, Electrical, Control and Instrumentation Engineering, Hanyang University) ;
  • Kim, Young-Kwang (Dept. of Electronic, Electrical, Control and Instrumentation Engineering, Hanyang University) ;
  • Park, Chang-Kyun (Dept. of Electronic, Electrical, Control and Instrumentation Engineering, Hanyang University) ;
  • Park, Jin-Seok (Dept. of Electronic, Electrical, Control and Instrumentation Engineering, Hanyang University)
  • 김종필 (한양대학교 전자전기제어계측공학과) ;
  • 김영광 (한양대학교 전자전기제어계측공학과) ;
  • 박창균 (한양대학교 전자전기제어계측공학과) ;
  • 박진석 (한양대학교 전자전기제어계측공학과)
  • Published : 2008.07.16
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Abstract

The results of the experiment that was conducted on the electron emission property and the long-term stability of the emission current in various carbon nanotubes (CNTs)-based field emitters with a CNT/catalyst/buffer/W-tip configuration are presented herein. CNT-based field emitters were fabricated by varying the (TiN, Al/Ni/TiN) buffer layer and the (Ni, Co) catalyst material. This study aimed to elucidate how the buffer layers and catalyst materials affect the structural properties of CNTs and the long-term stability of CNT emitters. Raman spectroscopy, field emission SEM, and high-resolution TEM were used to analyze the crystalline structure, surface morphologies, and nanostructures of all the grown CNTs. X-ray photoelectron spectroscopy (XPS) was used to monitor the chemical bonds of all the buffer layers and catalysts. Electron emission measurement and a long-term (up to 40h) stability test were carried out using a compactly designed field emission measurement system.

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