Field emission from TiO2/Ti nanotube arrays with different morphologies

被引：16
|
作者：
Guo, Rui-Sheng [1 ]
Wang, Cheng-Wei [1 ,2 ,3 ,4 ]
Chen, Jian-Biao [1 ]
Wang, Jian [1 ]
Wang, Ling-Qing [1 ]
Liu, Wei-Min [2 ]
机构：
[1] NW Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[3] NWNU, Joint Lab Atom & Mol Phys, Lanzhou 730070, Peoples R China
[4] IMP CAS, Lanzhou 730070, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2010年 / 405卷 / 22期
基金：
中国国家自然科学基金;
关键词：
TiO2/Ti nanotube arrays; Field emission; FABRICATION; TITANIUM; FILMS; WATER;
D O I：
10.1016/j.physb.2010.08.060
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Well-aligned TiO2/Ti nanotube arrays were electrochemically formed in a HF solution for different anodization times. Field emission scanning electron microscopy (FE-SEM) images reveal that anodization time had a great influence on the morphology of TiO2/Ti nanotube arrays. The composition of resulting nanotubes was analyzed by X-ray photoelectron spectroscopy (XPS). Field emission properties of the prepared samples with different morphologies were investigated by the Fowler-Nordheim (F-N) theory. The results indicate that the morphology can affect field emission behaviors. TiO2/Ti nanotube arrays with clear, uniform, and short nanotubes display moderate field emission properties, and have the better turn-on field of 4.6 V/mu m and good field emission stability. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：4682 / 4686
页数：5
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