Low field electron emission from nanoclustered carbon grown by cathodic arc

被引：2

作者：

Satyanarayana, BS ^{[1
]}

Robertson, J ^{[1
]}

Milne, WI ^{[1
]}

机构：

[1] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

来源：

关键词：

cathodic arc; diamond-like carbon; field emission; nanotubes; tetrahedral amorphous carbon;

D O I：

10.1016/S0925-9635(99)00304-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocluster carbon films grown using a cathodic are process at room temperature in the presence of background gases such as helium are found to be good electron emitters. The variation in the surface morphology and the corresponding emission characteristics of the films with change in helium partial pressure (5 x 10(-4) to 50 Torr) during film growth are reported. The effect of helium partial pressure on clustering was studied for films grown at nitrogen partial pressures of 10(-4) and 10(-3) Torr. The surface morphology of the films varied from smooth through clusters (with sizes 50-200 nm) to fibrous films. The threshold field varied from 1 to 10 V/mu m for an emission current density 1 mu A/cm(2). (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：1213 / 1217

页数：5

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