Influence of Zn ion implantation on structures and field emission properties of multi-walled carbon nanotube arrays

被引：6

作者：

Chen KeFan ^{[1
]}

Deng JianHua ^{[1
]}

Zhao Fei ^{[1
]}

Cheng GuoAn ^{[1
]}

Zheng RuiTing ^{[1
]}

机构：

[1] Beijing Normal Univ, Coll Nucl Sci & Technol, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China

来源：

SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2010年 / 53卷 / 03期

基金：

中国国家自然科学基金;

关键词：

multi-walled carbon nanotubes; ion implantation; field electron emission; BORON; DEPOSITION; FILMS;

D O I：

10.1007/s11431-009-0384-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structures and field emission properties of multi-walled carbon nanotube arrays implanted with Zn+ by MEVVA ion implanter have been investigated. The results revealed that Zn+ implantation induced structural damage and that the top of carbon nanotubes with multi-layered graphite structure were transformed into carbon nanowires with amorphous structure. Meanwhile, C: Zn solid solution was synthesized after Zn+ implantation. The turn-on field and threshold field were 0.80 and 1.31 V/mu m, respectively for original multi-walled carbon nanotube arrays and were reduced to 0.66 and 1.04 V/mu m due to the synthesis of C and Zn composite, in which the work function was reduced after low doses of Zn+ implantation. It is indicated that low doses of Zn+ implantation can improve field emission performance of multi-walled carbon nanotube arrays. Otherwise, high doses of Zn+ implantation can reduce field emission properties of multi-walled carbon nanotube arrays, because radiation damage reduces the electric field enhancement factor.

引用

页码：776 / 781

页数：6

共 21 条

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