Atomic Decoration for Improving the Efficiency of Field Electron Emission of Carbon Nanotubes

详细信息    查看全文

• 作者：Guihua Chen ; Zhibing Li ; Jie Peng ; Chunshan He ; Weiliang Wang ; Shaozhi Deng ; Ningsheng Xu ; Chongyu Wang ; Shanying Wang ; Xiao Zheng ; GuanHua Chen ; Tao Yu
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：April 5, 2007
• 年：2007
• 卷：111
• 期：13
• 页码：4939 - 4945
• 全文大小：272K
• 年卷期：v.111,no.13(April 5, 2007)
• ISSN：1932-7455

文摘

The field electron emission from the single-walled carbon nanotubes with their open ends terminated by^-BH, ^-NH, and ^-O has been simulated. We find that ^-BH and ^-NH suppress the apex-vacuum barriersignificantly and lead to higher emission current in contrast to the ^-O-terminated structure. The calculatedbinding energy implies that the carbon nanotubes terminated with ^-BH and ^-NH are more stable than thosesaturated by oxygen atoms or by hydrogen atoms. The simulation shows that the most probable orientationof the emission beam has correlation to the atomic structure of the apex and is field-dependent.