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Fullerenes, Nanotubes and Carbon Nanostructures Volume 14, 2006 - Issue 2-3
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Original Articles

The Influence of Cs Adsorption on Field Electron Emission from Single‐Walled Carbon Nanotube Layers

A. L. Musatov Institute of Radioengineering and Electronics, Moscow, RussiaCorrespondence[email protected]
,
K. R. Izrael'yants Institute of Radioengineering and Electronics, Moscow, Russia
,
A. V. Krestinin Institute of Problems of Chemical Physics, Chernogolovka, Moscow Region, Russia
&
M. B. Kislov Institute of Problems of Chemical Physics, Chernogolovka, Moscow Region, Russia
Pages 187-191 | Published online: 22 Aug 2006
 
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Abstract

The influence of Cs adsorption on field emission characteristics of single‐walled carbon nanotube (SWNT) layers has been investigated. It has been found that Cs adsorption onto SWNT tips not only decreases the work function of SWNTs with the corresponding increase of the emission current, but also causes the additional increasing of the emission current in tens times without the decrease of the work function. We attribute the second effect to the appearance of local surface states associated with Cs, that increase the transparency of the surface potential barrier.

Acknowledgment

The work was supported by ISTC (Project 1024.2). The authors thank Dr. E.G. Chirkova for her assistance in the treatment of experimental results.

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