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Synthesis and field-emission of aligned SnO2 nanotubes arrays

被引：35
作者：
Li, Zijiong [1 ,2 ]
Wang, Haiyan [2 ]
Liu, Ping [1 ]
Zhao, Bo [1 ]
Zhang, Yafei [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Res Inst Micro Nanometer Sci & Technol, Natl Key Lab Nanomicro Fabricat Technol, Key Lab Thin Film & Microfabricat,Minist Educ, Shanghai 200240, Peoples R China
[2] Zhengzhou Univ Light Ind, Dept Phys, Zhengzhou 450007, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 08期
基金：
中国国家自然科学基金;
关键词：
SnO2; nanotubes; High-frequency inductive heating; Field-emission; RAMAN-SCATTERING; OXIDE; MORPHOLOGIES; NANOWIRES; QUALITY; GROWTH;
D O I：
10.1016/j.apsusc.2008.11.054
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Aligned tin dioxide (SnO2) nanotubes have been synthesized by high-frequency inductive heating. Nanotubes with high yield were grown on silicon substrates in less than 5 min, using SnO2 and graphite as the source powder. Scanning electron microscopy and transmission electron microscopy showed nanotube with diameters from 50 to 100 nm and lengths up to tens of mircrometers. The SnO2 nanotubes synthesized under the optimum condition have better field-emission characteristics. The turn-on field needed to produce a current density of 10 mu A/cm(2) is found to be 1.64 V/mu m. The samples show good field-emission properties with a fairly stable emission current. This type of SnO2 nanotubes can be applied as field emitters in displays as well as vacuum electric devices. (C) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码：4470 / 4473
页数：4
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