期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 60, 期 8, 页码 2677-2681出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2013.2270313
关键词
Carbon nanotube (CNT); electron emission; field emitter; pulsewidth modulation
资金
- National Key Basic Research Program of China [2013CB933601, 2010CB327703]
- National Natural Science Foundation of China [U1134006, 50725206, 51102287]
- Science and Technology Department of Guangdong Province
- Economic and Information Industry Commission of Guangdong Province
- Science & Technology and Information Department of Guangzhou City
- Fundamental Research Funds for the Central Universities
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.
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