High Purity and Low-Temperature Generation of Single-Walled Carbon Nanotubes by a Catalytic CVD Method
Shigeo Maruyama, Yuhei Miyauchi and Shohei ChiashiBy using a new carbon source molecule, a simple catalytic chemical vapor deposition technique to generate high-purity single walled carbon nanotubes (SWNTs) is demonstrated. Pure SWNTs without amorphous carbon coating, multi-walled carbon nanotubes, carbon nanoparticles or metal particles were generated at relatively low temperature as 700-900 oC with Fe/Co catalyst supported with zeolite. With decrease in temperature, thinner nanotubes were generated. The generation of SWNTs even at 550 oC is demonstrated. The high-purity generation at low temperature promises the direct growth of SWNTs on conventional semiconductor devices already patterned with aluminum.
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