ARMY/NAVY INSTRUMENTATION PROGRAM ORGANIC FILM TUNNEL EMISSION INVESTIGATION.
Final rept., 1 Sep 62-17 Feb 63,
SERVO CORP OF AMERICA LINDENHURST N Y
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In contrast to the work reported here, the con ventional approach to the solid state triode based on electron tunnelling has resulted in disappointingly small emission currents. It is hypothesized that two primary factors are responsible for this. These are, a the rounding off of the dielectric barrier at the emitter-dielectric interface causes hot elec trons to tunnel by internal field emission with in the dielectric rather than injection from the metal and b the highly ionic nature of the oxides conventionally employed for the dielec tric is responsible for excessive scattering of the hot electrons within electric. A method of circumventing both of these factors appears to be possible by substituting a polariz ed organic film for the conventional inorganic dielectric. Of a series of organic compounds tested for this purpose an organic dye, fluores cein, was found to be most suitable. Employing this compound, techniques were developed for vacuum depositing pinhole free dielectric films over the thickness range of 30 to 2000 A when the receiving surface was Nesa glass. Author