Oxygen and ozone oxidation-enhanced field emission of carbon nanotubes

被引：81

作者：

Kung, SC ^{[1
]}

Hwang, KC

Lin, IN

机构：

[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu, Taiwan

[2] Natl Tsing Hua Univ, Ctr Mat Sci, Hsinchu, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 25期

关键词：

D O I：

10.1063/1.1485315

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Vertically aligned carbon nanotube (CNT) arrays were grown on p-type silicon wafer using acetylene and iron phthalocyanine as the sources of hydrocarbons and catalysts, respectively. The CNT arrays were treated by chemical reagents, such as oxygen (O-2), ozone (O-3), bromine, and acids. When treated by O-2 and O-3, the emission current of the CNT array was increased similar to800% along with a decrease of the onset field emission voltage from 0.8 to 0.6 V/mum. Other chemical treatments, e.g., bromination and acid oxidation, lead to poorer field emission performance. The effects of these chemical processes on the field emission properties of CNT arrays will be discussed. (C) 2002 American Institute of Physics.

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页码：4819 / 4821

页数：3

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