Effects of gas exposure on the field-emission properties of ZnO nanorods

被引：29
|
作者：
Kim, DH
Jang, HS
Lee, SY
Lee, HR
机构：
[1] Kyungpook Natl Univ, Dept Phys, Nanophys & Technol Lab, Taegu 702701, South Korea
[2] Kyungpook Natl Univ, Dept Nanosci & Technol, Taegu 702701, South Korea
来源：
NANOTECHNOLOGY | 2004年 / 15卷 / 11期
关键词：
D O I：
10.1088/0957-4484/15/11/008
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of diverse gases on the field emission (FE) properties of ZnO nanorods was investigated. The FE properties of nanorods were fully recovered after evacuating to the initial pressure, even after an abrupt current drop under severe vacuum conditions of similar to2 x 10(-4) Torr induced by the presence Of O-2, N-2, Ar and air. The reversible and sensitive response of the FE of the nanorods with variation in pressure was found for all gases tested except for H-2. Exposure of H-2 causes a permanent increase in the FE current and a decrease in the turn-on field. The pressure-dependent field emission behaviour of nanorods must be considered when field emission data are compared and characterized.
引用
收藏
页码：1433 / 1436
页数：4
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