Electron field emission from single-walled carbon nanotube nonwoven

被引：11

作者：

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China ^{[1
]}

不详 ^{[2
]}

不详 ^{[3
]}

机构：

[1] Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences

[2] Graduate School, Chinese Academy of Sciences

[3] Department of Electronics, School of Electronics Engineering and Computer Science, Peking University

来源：

Chin. Phys. | 2006年 / 2卷 / 422-427期

关键词：

Field; Single-walled carbon nanotubes;

D O I：

10.1088/1009-1963/15/2/031

中图分类号：

学科分类号：

摘要：

Field emission from single-walled carbon nanotube (SWNT) nonwoven has been investigated under high vacuum with different vacuum gaps. A low turn-on electric field of 1.05 V/μm is required to reach an emission current density of 10 μA/cm2. An emission current density of 10 mA/cm2 is obtained at an operating electric field of 1.88 V/μm. No current saturation is found even at an emission current of 5 mA. With the vacuum gap increasing from 1 to 10 mm, the turn-on field decreases monotonically from 1.21 to 0.68 V/μm, while the field amplification is augmented. The good field-emission behaviour is ascribed to the combined effects of the intrinsic field emission of SWNT and the waved topography of the nonwoven. © 2006 Chin. Phys. Soc. and IOP Publishing Ltd.

引用

页码：422 / 427

页数：5