Field Emission Property of Double-walled Carbon Nanotubes Related to Purification and Transmittance

被引：3

作者：

Ahn, KiTae ^{[1
]}

Jang, HyunChul ^{[1
]}

Lyu, SeungChul ^{[2
]}

Lee, Hansung ^{[3
]}

Lee, Naesung ^{[3
]}

Han, Moonsup ^{[4
]}

Park, Yunsun ^{[5
]}

Hong, Wanshick ^{[1
,2
]}

Park, Kyoungwan ^{[1
,2
]}

Sok, Junghyun ^{[1
,2
]}

机构：

[1] Univ Seoul, Dept Nano Sci & Technol, Seoul 130743, South Korea

[2] Univ Seoul, Dept Nanotechnol, Seoul 130743, South Korea

[3] Sejong Univ, Fac Nanotechnol & Adv Mat Engn, Seoul 143747, South Korea

[4] Univ Seoul, Dept Phys, Seoul 130743, South Korea

[5] Myongi Univ, Dept Ind & Management Engn, Yongin 447827, South Korea

来源：

KOREAN JOURNAL OF METALS AND MATERIALS | 2011年 / 49卷 / 01期

关键词：

nanostructured materials; vapor deposition; electrical properties; Raman spectroscopy; carbon nanotube; EMITTERS; DISPLAY;

D O I：

10.3365/KJMM.2011.49.1.079

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Double-walled carbon nanotubes (DWCNTs) with high purity were produced by the catalytic decomposition of tetrahydrofuran (THF) using a Fe-Mo/MgO catalyst at 800 degrees C. The as-synthesized DWCNTs typically have catalytic impurities and amorphous carbon, which were removed by a two-step purification process consisting of acid treatment and oxidation. In the acid treatment, metallic catalysts were removed in HCl at room temperature for 5 hr with magnetic stirring. Subsequently, the oxidation, using air at 380 degrees C for 5 hr in the a vertical-type furnace, was used to remove the amorphous carbon particles. The DWCNT suspension was prepared by dispersing the purified DWCNTs in the aqueous sodium dodecyl sulfate solution with horn-type sonication. This was then air-sprayed on ITO glass to fabricate DWCNT field emitters. The field emission properties of DWCNT films related to transmittance were studied. This study provides the possibility of the application of large-area transparent CNT field emission cathodes.

引用

页码：79 / 84

页数：6

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