Scanning field emission from patterned carbon nanotube films

被引：907

作者：

Nilsson, L ^{[1
]}

Groening, O

Emmenegger, C

Kuettel, O

Schaller, E

Schlapbach, L

Kind, H

Bonard, JM

Kern, K

机构：

[1] Univ Fribourg, Inst Phys, CH-1700 Fribourg, Switzerland

[2] Ecole Polytech Fed Lausanne, Dept Phys, CH-1015 Lausanne, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 15期

关键词：

D O I：

10.1063/1.126258

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The investigation of the field emission (FE) properties of carbon nanotube (CNT) films by a scanning anode FE apparatus, reveals a strong dependence on the density and morphology of the CNT deposit. Large differences between the microscopic and macroscopic current and emission site densities are observed, and explained in terms of a variation of the field enhancement factor beta. As a consequence, the emitted current density can be optimized by tuning the density of CNTs. Films with medium densities (on the order of 10(7) emitters/cm(2), according to electrostatic calculations) show the highest emitted current densities. (C) 2000 American Institute of Physics. [S0003-6951(00)00815-9].

引用

页码：2071 / 2073

页数：3

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