Uniform arrays of carbon nanotubes applied in the field emission devices

被引：5
|
作者：
Li DeTian [1 ]
Cheng YongJun [1 ]
Cai Min [1 ]
Yao JinLi [2 ]
Chang Peng [2 ]
机构：
[1] Lanzhou Inst Phys, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, MOE, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2013年 / 56卷 / 11期
关键词：
carbon nanotubes; anodic aluminum oxide template; field emission; EMITTERS; ALUMINA;
D O I：
10.1007/s11433-013-5220-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Carbon nanotubes (CNTs) were grown into anodic aluminum oxide (AAO) channels by chemical vapor deposition (CVD) using C2H2/N-2 mixtures as feeding gas, which can be used as field emitters. The bottom surface of AAO template was etched slightly and the tips of CNTs were explored as the field emission arrays which were uniform and vertical. Field emission characterization showed a low turn-on field about 3.25 V/mu m and high emission current about 30 mA/cm(2) with the electric field about 4 V/mu m. These superior field emission characteristics could be attributed to low density of vertical CNTs and higher conductivity of the substrate.
引用
收藏
页码：2081 / 2084
页数：4
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