Field emission of carbon nanotube array with normal-gate cold cathode

A hexagon pitch carbon nanotube （CNT） array vertical to the normal gate of cold cathode field emission displayer （FED） is simulated by solving the Laplace equation. The calculated results show that the normal gate causes the electric field around the CNT tops to be concentrated and the emission elec...

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Bibliographic Details
Published inChinese physics B Vol. 19; no. 5; pp. 483 - 487
Main Author 戴剑锋 慕晓文 乔宪武 陈小婷 王军红
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.05.2010
Subjects
Arrays
Carbon nanotubes
Cold cathodes
Current density
Electric fields
Emission
Field emission
Gates
冷阴极管
场发射显示器
场增强因子
拉普拉斯方程
电流强度
碳纳米管
计算结果
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Summary:A hexagon pitch carbon nanotube （CNT） array vertical to the normal gate of cold cathode field emission displayer （FED） is simulated by solving the Laplace equation. The calculated results show that the normal gate causes the electric field around the CNT tops to be concentrated and the emission electron beam becomes a column. The field enhancement factor and the emission current intensity step up greatly compared with those of the diode structure. Emission current density increases rapidly with the decrease of normal-gate aperture. The gate voltage exerts a critical influence on the emission current.
Bibliography:field emission, hexagon pitch carbon nanotube （CNT） array, emission current density, field enhancement factor
11-5639/O4
TN873
TB383
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/5/057201