pryor-mrssp-416-425

Data for reference pryor-mrssp-416-425

Polycrystalline diamond, boron nitride and carbon nitride thin film cold cathodes

RW Pryor

Materials Research Society Symposium Proceedings 416, 425 (1996).

Recent observations are presented on the emission of electrons from n-type polycrystalline diamond and from two new families of nitride-based cold cathode films, n-type boron nitride (BN) and n-type carbon nitride (CN). The n-type polycrystalline diamond films were synthesized by MPECVD. The BN and CN n-type films(~150 nm) were synthesized by reactive laser ablation on n-type polycrystalline diamond (~24 microns) on (100)Si. Emission current densities have been measured as high as 119 cm^-2. Extraction fields have been observed to range from ~0 V/micron up. The diamond films show a field activated thermionic behavior. Both the BN and the CN films show a power law current density / applied field response implying a negative electron affinity (NEA) type behavior.

Contributed by Roger W. Pryor from diamond1.physics.wayne.edu. on Monday, April 29, 1996 3:08:29 PM

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