Super-low turn-on and threshold electric fields of plasma-treated partly Fe-filled carbon nanotube films

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• 作者：Xuchun Gui ; Jinquan Wei ; Kunlin Wang ; Eryang Xu ; Ruitao Lv ; Dan Zhu ; Zhigang Guo ; Feiyu Kang ; Yanqiu Zhu ; Dejie Li ; Hongwei Zhu ; Dehai Wu
• 关键词：A. Nanostructures ; B. Vapor deposition ; D. Electrical properties
• 刊名：Materials Research Bulletin
• 出版年：2010
• 出版时间：May 2010
• 年：2010
• 卷：45
• 期：5
• 页码：568-571
• 全文大小：472 K

文摘

Field emission properties of partly Fe-filled carbon nanotubes (FCNTs) treated with different plasmas have been studied. Super low turn-on (0.24 V/μm) and threshold (0.6 V/μm) electric fields are identified upon nitrogen plasma treatment for 60 min. The field-enhancement factor, as high as 4.8 × 10⁴, can be attributed to the plasma-induced structural defects and the unique characteristics of thin walled FCNTs with filled Fe nanowires. A model has been proposed to understand the effects of plasma on the CNTs.