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Proceedings Paper

Surface conduction electron emission source enhanced by back gate electrode
Author(s): P. F. Cai; H. F. Lianga; C. L. Cai
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Paper Abstract

Surface conduction electron emission device (SED) was fabricated with a back gate electrode. And then the device was electroformed in using continuous triangle wave at vacuum environment. After that we prepare an aluminum back electrode on the back of device. With the back electrode voltage changing, we could observe the change of the emission current. When device voltage and anode are fixed, the device’s emission current and efficiency decrease under positive back voltage of 5V. On the contrary, the device’s emission current and efficiency increase with negative back voltage of -5V. Our results directly proved that the emission electrons were from the field include cool electron emission, but not from the power induced thermal electron emission due to size-effect.

Paper Details

Date Published: 19 February 2015
PDF: 5 pages
Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94491B (19 February 2015); doi: 10.1117/12.2075881
Show Author Affiliations
P. F. Cai, Xi'an Technological Univ. (China)
H. F. Lianga, Xi'an Technological Univ. (China)
C. L. Cai, Xi'an Technological Univ. (China)


Published in SPIE Proceedings Vol. 9449:
The International Conference on Photonics and Optical Engineering (icPOE 2014)
Ailing Tian; Anand Asundi; Weiguo Liu; Chunmin Zhang, Editor(s)

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