Ultrahigh electron emissive carbon nanotubes with nano-sized RuO2 particles deposition

被引：6

作者：

Knibbe, Ruth

Nogita, Kazuhiro

Drennan, John

Noguchi, Tsuneyuki

Tatenuma, Katsuyoshi

Liu, Pou

Arai, Fumihito

Yashima, Eiji

Nishiwaki, Michiru

Kato, Shigeki

机构：

[1] Univ Queensland, Dept Chem Engn, Brisbane, Qld 4072, Australia

[2] Grad Univ Adv Studies, Tsukuba, Ibaraki 3050801, Japan

[3] KAKEN Inc, Mito, Ibaraki 3100903, Japan

[4] Nagoya Univ, Nagoya, Aichi 4648603, Japan

[5] High Energy Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2007年 / 9卷 / 06期

关键词：

field emission; MWNT; RuO2; electrical characteristics;

D O I：

10.1007/s11051-006-9207-1

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

Multi-wall carbon nanotubes (MWNTs) have a great commercial potential as electron field emitters, but suffer from fundamental problems such as stability and brightness. By depositing the MWNTs with nano-sized ruthenium dioxide (RuO2) particles, a new high performance emitter has been developed. When compared to MWNTs, the MWNTs impregnated with 1-2 nm sized RuO2 have superior and more efficient electrical characteristics. MWNTs supported by a silicon substrate showed a reduction in the onset voltage from 5.4 to 4 V/mu m after RuO2 impregnation. The long-term stability of the impregnated MWNTs is also demonstrated with only a 20% increase in applied voltage required after 700 h operation at 40 mA/cm(2).

引用

页码：1201 / 1204

页数：4

共 10 条

[1]

Electron field emission properties of carbon nanotubes during thermal heating and laser irradiation [J].