Title :
Cold field emission from CVD diamond films observed in emission electron microscopy
Author :
Wang, Chingyue ; Garcia, Alvaro ; Ingram, D.C. ; Lake, M. ; Kordesch, M.E.
Author_Institution :
Dept. of Phys. & Astron., Ohio Univ., Athens, OH, USA
Abstract :
Thick (100 mu m) chemical vapour deposited (CVD) polycrystalline diamond films have been observed to emit electrons with an intensity sufficient to form an image in the accelerating field of an emission microscope without external excitation (<3 MV/m). The individual crystallites are of the order of 1-10 mu m. The combined crystallite diameter and the electric field strength in these ´self-emitting´ films are far below those typical for cold field emitters.
Keywords :
CVD coatings; diamond; electron field emission; field emission electron microscopy; 1 to 10 micron; 100 micron; C polycrystalline films; CVD diamond films; cold field emission; cold field emitters; crystallite diameter; electric field strength; electron field emission; emission electron microscopy; polycrystalline diamond films; self emitting films;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910914
