Creating graphene and graphite coatings on metal field electron emitters to improve their characteristics

Abstract

Abstract The growth of graphene and graphite structures during the catalytic dissociation of benzene molecules on the surface of iridium and rhenium field electron emitters was studied using field electron and desorption microscopy. The emission and operational characteristics of the manufacture emitters were studied. The carbon coating increases the resistance of emitters to adsorption of gas molecules and ion bombardment. The grown graphite crystal allows you to get a beam of electrons localized in a narrow angle when emitting from the angle of the crystal. Metal emitters with a carbon coating in relatively poor vacuum conditions have greater stability and longer lifetime compared to metal emitters.