Field Electron Emission from Highly Graphitic Diamond Films with Ball-Like Surface Morphologies

李运钧; 姚宁; 何金田; 张兵临; 龚知本

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Field Electron Emission from Highly Graphitic Diamond Films with Ball-Like Surface Morphologies

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摘要

Chemical vapor deposited diamond films with ball-like surface morphologies for field electron emission are reported on Mo substrates.A transparent conducting thin film anode(indium-tin oxide film coated on glass substrate)technique was used to determine the locations of field emission sites on the film cathode.The emission site density was obtained by counting damage spots on the film anode by optical microscopy.These damage spots,caused by the impact of emission electrons,corresponded to the emission sites.With the ball-like diamond films,a low turn-on filed of 2.1 V/μm and high current density of 4 mA/cm2 from an emitting area of 0.3cm2 were obtained.A field enhancement model and injection mechanism have been developed to explain the low turn-on field and high emission current.

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《中国物理快报：英文版》 |1997年第8期|P.633-636|共4页
作者
李运钧; 姚宁; 何金田; 张兵临; 龚知本;
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作者单位

Department of Physics and Henan Fbndamental&Applied Science Institute Zhengzhou University Zhengzhou 450052;

Department of Physics and Henan Fbndamental&Applied Science Institute Zhengzhou University Zhengzhou 450052;

Department of Physics and Henan Fbndamental&Applied Science Institute Zhengzhou University Zhengzhou 450052;

Department of Physics and Henan Fbndamental&Applied Science Institute Zhengzhou University Zhengzhou 450052;

Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Hefei 230031;

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原文格式 PDF
正文语种 chi
中图分类工程材料学;
关键词
film; damage; field;

Field Electron Emission from Highly Graphitic Diamond Films with Ball-Like Surface Morphologies

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