Optical emission spectroscopy of arc flame plasma for generation of carbon nanotubes

被引：47

作者：

Akita, S ^{[1
]}

Ashihara, H ^{[1
]}

Nakayama, Y ^{[1
]}

机构：

[1] Univ Osaka Prefecture, Dept Phys & Elect, Sakai, Osaka 5998531, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2000年 / 39卷 / 08期

关键词：

carbon nanotube; DC arc discharge; optical emission spectroscopy; plasma temperature; density of carbon species; growth mechanism; carbon monomer;

D O I：

10.1143/JJAP.39.4939

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spatial distributions of plasma temperature and densities of carbon species in DC are discharge for generating carbon nanotubes have been investigated by measuring the spatial distributions of optical emission spectra as a function of pressure, current density for are discharge, and cooling rare of the cathode. It is found that the nanotube yield is high when the temperature at the axial center of the cathode is higher than 6000 K so that the dominant species is in the are flame carbon monomer. The potential drop at the cathode sheath, calculated from the model proposed by Rethfeld et al. [J. Phys. D 29 (1996) 121], is high for the high nanotube yield in comparison to that under the low yield conditions.

引用

收藏

页码：4939 / 4944

页数：6

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