Effects of Pulsewidth and Area of Carbon Nanotube Films on Their Pulsed Field Emission Characteristics

被引：16
作者：
Zhang, Yu [1 ]
Deng, Shaozhi [1 ]
Du, Jiale [1 ]
Lai, Xinyu [1 ]
Chen, Jun [1 ]
Xu, Ningsheng [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Phys & Engn, Guangdong Prov Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
来源：
IEEE TRANSACTIONS ON ELECTRON DEVICES | 2013年 / 60卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Carbon nanotube (CNT); electron emission; field emitter; pulsewidth modulation; EMITTERS;
D O I：
10.1109/TED.2013.2270313
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Carbon nanotube (CNT) film has great potential in the application as a cold cathode in vacuum power electron devices. Pulse field emission of CNT film is investigated to achieve large current and current density. A maximum current of 16 mA is obtained from a 0.02-cm(2) CNT film with a current density of 800 mA/cm(2). The pulsewidth and area of CNT film have strong effects on field emission characteristics of CNT film, such as total current, current density, and current stability. The reason for this is discussed in detail. The results are useful for the design of the large current and current density CNT cold cathodes.
引用
收藏
页码：2677 / 2681
页数：5
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