【摘 要】
：
The growth of single-walled carbon nanotubes(SWCNTs) on substrates has attracted great interests because of the potential applications in various fields.Carbon monoxide(CO)was used as the carbon source for the growth of SWCNTs on silicon substrates.Random
【机 构】
：
Beijing National Laboratory for Molecular Science,Key Laboratory for the Physics and Chemistry of Na
论文部分内容阅读
The growth of single-walled carbon nanotubes(SWCNTs) on substrates has attracted great interests because of the potential applications in various fields.Carbon monoxide(CO)was used as the carbon source for the growth of SWCNTs on silicon substrates.Random or oriented SWCNTs can be produced by varying the CO flow rate.When the flow rate of CO was as low as 20 sccm(sccm:standard cubic centimeter per minute),dense SWCNT networks with clean surface were produced.When the flow rate was above 50 sccm,vertically aligned SWCNT(VA-SWCNT) arrays were grown.Well-aligned VA-SWCNT arrays were obtained in the temperature range of 650-800 ℃ and the content of large-diameter(above 1.7 nm) tubes in the array increased with the temperature.The height of the array was affected by the growth temperature,the CO flow rate,and the growth time.These findings indicate CO can be used as an efficient carbon source for the growth of SWCNTs on substrates under low flow rates.
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