Electron field emission of a nitrogen-doped TiO(2) nanotube array

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	Electron field emission of a nitrogen-doped TiO(2) nanotube array
	G. Liu; F. Li; D. W. Wang; D. M. Tang; C. Liu; X. L. Ma; G. Q. Lu; H. M. Cheng
	2008
发表期刊	Nanotechnology
ISSN	0957-4484
卷号	19 期号:2
摘要	A nitrogen-doped titania nanotube array vertically aligned on a titanium substrate exhibits efficient electron field emission. Such a titania nanotube array shows very good stability at high field emission current (fluctuation <3% at field emission current of 160 mu A within 4 h) and low turn-on and threshold fields (11.2 and 24.4 V mu m(-1), respectively) because of the coexistence of doped nitrogen and concomitant oxygen vacancies in titania nanotubes. This work demonstrates the possibility of converting pure titania nanotubes without field emission into a favorable and efficient one through the introduction of acceptor states and donor states both above the valence band maximum and below the conduction band minimum in the band gap of titania by the doped nitrogen and concomitant oxygen vacancies, respectively. Application of this doping concept to other transition metal oxides can be expected to broaden the scope of field emission materials.
部门归属	[liu, gang; li, feng; wang, da-wei; tang, dai-ming; liu, chang; ma, xiuliang; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [liu, gang; lu, gao qing] univ queensland, sch engn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia. [liu, gang; lu, gao qing] univ queensland, australia inst bioengn & nanotechnol, brisbane, qld 4072, australia.;liu, g (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;maxlu@uq.edu.au cheng@imr.ac.cn
关键词	Visible-light Photocatalysis Sensitized Solar-cells Titanium-dioxide Films Electrochemical Anodization Thin-films Oxide Hydrogen Resistance Oxidation Surfaces
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32939
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. Liu,F. Li,D. W. Wang,et al. Electron field emission of a nitrogen-doped TiO(2) nanotube array[J]. Nanotechnology,2008,19(2).
APA	G. Liu.,F. Li.,D. W. Wang.,D. M. Tang.,C. Liu.,...&H. M. Cheng.(2008).Electron field emission of a nitrogen-doped TiO(2) nanotube array.Nanotechnology,19(2).
MLA	G. Liu,et al."Electron field emission of a nitrogen-doped TiO(2) nanotube array".Nanotechnology 19.2(2008).