FIELD-EFFECT ELECTRON EMITTER

摘要

FIELD: electronic engineering. SUBSTANCE: emitter has two layers of carbon material placed one on top of other of which bottom one is made of porous carbon material of skeleton structure with open porosity of 35-70 volume percent. Bottom layer of emitter may be made of porous carbon material including diamond fragments measuring below 10 nm which are bonded by means of pyrocarbon matrix or of porous carbon material including nanopairs measuring 0.8-2.0 nm whose content is 20-50 volume percent. Top layer of emitter is produced by chemical plasma evaporation of hydrocarbons mixed up with hydrogen under capacitive discharge conditions at frequency of 12-100 MHz and temperature of 200-400 C. EFFECT: reduced electron emission threshold, facilitated manufacture, enlarged functional capabilities. 7 cl, 3 ex