Synthesis of Nanocrystalline Diamond Film by Hot Filament CVD Method

Hot Filament CVD 방법을 이용한 Nanocrystalline Diamond 박막 합성

  • 강민식 (고려대학교 재료공학과, 한국과학기술연구원 박막기술연구센터) ;
  • 이욱성 (한국과학기술연구원 박막기술연구센터) ;
  • 백영준 (한국과학기술연구원 박막기술연구센터) ;
  • 채기웅 (호서대학교 재료공학과) ;
  • 임대순 (고려대학교 재료공학과)
  • Published : 2001.01.01

Abstract

Hot filament CVD 방법에서 가스압을 증가시키는 방법을 사용하여 nanocrystalline 다이아몬드 막을 합성하였다. 메탄-수소 혼합가스를 사용하고 메탄함량, 유량, 기판온도합성시간은 각각 4%, 100sccm, 110$0^{\circ}C$, 10시간으로 일정하게 유 였다. 합성 변수로서 가스압을 40 Torr에서 300 Torr 구간에서 변화시켰다. High-resolution SEM으로 막 표면의 형상을 관찰하고, TEM, XRD, micro-Raman spectroscopy를 사용하여 합성된 막의 구조 및 특성을 분석하였다. 합성된 다이아몬드 막은 압력이 높아짐에 따라 mocrocrystalline 다이아몬드 막에서 점진적으로 nanocrystalline 다이아몬드 막으로 변화해갔으며, 가스압에 다라 비다이아몬드 상의 량이 증가하였다. 증착속도는 microcrystalline 다이아몬드 막이 형성되는 구간에서는 압력에 따라 1.1~1.3 $\mu\textrm{m}$/h까지 증가하다가 nanocrystalline 다이아모느 막이 형성되는 구간에서는 압력에 따라 감소하였다. 감소하였다.

Keywords

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