| Field Emission Enhancement of Carbon Nanotubes by Surface Modification |
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| 作者姓名： | 勇振中 巩金龙 王震霞 朱志远 胡建刚 潘强岩 |
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| 作者单位： | [1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 [2]Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
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| 基金项目： | Supported by the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KJCX2-SW-N02. |
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| 摘 要： | By employing a multi-walled carbon nanotube （MWCNT） film as the substrate, we obtain Fe tipped carbon nanorods or carbon nanoparticles grown on the outer walls of MWCNTs by combining sputtering deposition of Fe films and rf plasma enhanced chemical vapour deposition at high temperature. Scanning electron microscopy and high-resolution transmission electron microscopy are used to examine the structure of carbon nanorods and carbon nanoparticles. In addition, the formation mechanism is discussed briefly. The electron field emission tests indicate that the turn-on field （at 10μA/cm^2） of the treated MWCNT films decreases from 2.4 V/μm to O. 79 V/μm and the field emission current is relatively stable. The enhanced field enhancement factor, increasing emission densities coming from the grown nanorods and nanoparticles, and H terminated by H plasma a11 are responsible for the enhancement of the field enhancement factor.
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| 关 键 词： | 发射增强 碳元素 物体表面 修饰方法 |
| 修稿时间： | 2006-09-25 |
Field Emission Enhancement of Carbon Nanotubes by Surface Modification |
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| YONG Zhen-Zhong,GONG Jin-Long,WANG Zhen-Xia,ZHU Zhi-Yuan,HU Jian-Gang,PAN Qiang-Yan.Field Emission Enhancement of Carbon Nanotubes by Surface Modification[J].Chinese Physics Letters,2007,24(1):233-235. |
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| Authors: | YONG Zhen-Zhong GONG Jin-Long WANG Zhen-Xia ZHU Zhi-Yuan HU Jian-Gang PAN Qiang-Yan |
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| Institution: | Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800
Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
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| Abstract: | |
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| Keywords: | 79 70 +q 81 15 Gh 85 35 Kt |
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