Influence of sp2 clusters on the field emission properties of amorphous carbon thin films

被引：82

作者：

Carey, JD ^{[1
]}

Forrest, RD ^{[1
]}

Khan, RUA ^{[1
]}

Silva, SRP ^{[1
]}

机构：

[1] Univ Surrey, Sch Elect Engn Informat Technol & Math, Guildford GU2 7XH, Surrey, England

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 13期

关键词：

D O I：

10.1063/1.1312202

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of the concentration and size of sp(2) carbon clusters on the field emission properties of hydrogenated amorphous carbon thin films is investigated. In combination with electron paramagnetic resonance and optical measurements, it is shown that the trend in the threshold field for emission for films deposited under certain conditions can be explained in terms of improvements in the connectivity between sp(2) clusters. These clusters are believed to be located near the Fermi level, and the connectivity is primarily determined by the cluster size and concentration, which in turn is determined by the choice of deposition conditions. Details of the appropriate emission mechanisms for different types of deposited carbon films are discussed. (C) 2000 American Institute of Physics. [S0003- 6951(00)01639-9].

引用

页码：2006 / 2008

页数：3

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