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

Author

Yu Zhang ; Shaozhi Deng ; Jiale Du ; Xinyu Lai ; Jun Chen ; Ningsheng Xu

Author_Institution

State Key Lab. of Optoelectron. Mater. & Technol., Sun Yat-sen Univ., Guangzhou, China

Volume

60

Issue

8

fYear

2013

fDate

Aug. 2013

Firstpage

2677

Lastpage

2681

Abstract

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-cm² CNT film with a current density of 800 mA/cm². 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.

Keywords

carbon nanotubes; cathodes; current density; power electronics; CNT film; carbon nanotube films; current density CNT cold cathodes; pulsed field emission characteristics; pulsewidth; vacuum power electron devices; Carbon nanotube (CNT); electron emission; field emitter; pulsewidth modulation;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2013.2270313

Filename

6553116