Study on large current field-emission carbon nanotube cathode

被引：3

作者：

机构：

[1] Department of Mathematics and Physics, Nanjing Institute of Technology

[2] School of Electronic Science and Engineering, Southeast University

来源：

Cui, Y. (njcyk@njit.edu.cn) | 2013年 / Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China卷 / 25期

关键词：

Carbon nanotube; Current density; Emitting cathode; Field emission;

D O I：

10.3788/HPLPB20132506.1509

中图分类号：

学科分类号：

摘要：

A large current and a high emission current density from printed carbon nanotube (CNT) are reported. To enhance the field-emission current, a small number of metal nano-particles were added to the CNT paste. The metal nano-particles enhanced the emitters-substrate contact and improved the CNT's adhesion properties. A large current of 68.0 mA is obtained from a cathode area of 1.1 mm2, and the high emission current density is about 6.2 A/cm2. The CNT cathode is applied to field-emission vacuum device prototype successfully. Experiments show that current and current density can meet the requirements for large current field-emission electron devices.

引用

页码：1509 / 1512

页数：3

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