Measurements and analysis of advanced field emission cold cathodes

Author

He, X. ; Scharer, J. ; Booske, J. ; Vlahos, V. ; Sengele, S. ; Jordan, N. ; Gilgenbach, R. ; Feng, Y. ; Verboncoeur, J.

Author_Institution

Univ. of Wisconsin-Madison, Madison

fYear

2007

fDate

8-12 July 2007

Firstpage

35

Lastpage

36

Abstract

We report measurements and analyses of field emission from both copper and aluminum cathodes. To analyze the data, we have developed a numerical model of electron emission. We note that localized heating of high current density field emission cathodes can provide regime where thermionic as well as field emission effects must be considered. Our analysis of experimental data fitting in both the thermionic and field emission dominant regime provides a robust method for determination of effective work function and field enhancement factor for field emission cathode.

Keywords

aluminium; cathodes; copper; current density; electron field emission; thermionic electron emission; tunnelling; work function; Al; Cu; aluminum cathodes; copper cathodes; effective work function; electron emission model; field emission analysis; field emission cold cathode measurements; field enhancement factor; thermionic emission; Aluminum; Cathodes; Copper; Current density; Data analysis; Electron emission; Heating; Numerical models; Robustness; Thermionic emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference, 2007. IVNC. IEEE 20th International

Conference_Location

Chicago, IL

Print_ISBN

978-1-4244-1133-7

Electronic_ISBN

978-1-4244-1134-4

Type

conf

DOI

10.1109/IVNC.2007.4480922

Filename

4480922