Title :
Density-gradient analysis of effects of geometry on field-emitter characteristics
Abstract :
An approximate approach to quantum transport problems known as density-gradient theory is used to study geometrical and space-charge effects on field emission in planar, cylindrical and spherical geometries. It is shown that significant departures from simple field enhancement ( beta factor) arise for radii of curvature below 50AA and that for many purposes explicit inclusion of space-charge effects is unnecessary especially in non-planar geometries.<>
Keywords :
electron field emission; many-body problems; vacuum microelectronics; cylindrical geometries; density-gradient analysis; field-emitter characteristics; nonplanar geometries; planar geometries; quantum transport problems; radii of curvature; space-charge effects; spherical geometries; vacuum microelectronics; Electron emission; Vacuum microelectronics;
Conference_Titel :
Electron Devices Meeting, 1992. IEDM '92. Technical Digest., International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0817-4
DOI :
10.1109/IEDM.1992.307383
