A Thin Film Schottky Diode Fabricated from Flame Grown Diamond

Schottky diodes have been fabricated out of polycrystalline diamond thin films grown in a atmospheric pressure turbulent flame. Doping was accomplished by bubbling the source gas through a solution of diboric trioxide in acetone. The diodes were grown on metallic non-crystalline substrates. A device fabrication technique, that is reported upon here, removes the requirement of working with detached films. Diode rectification ratios in excess of 300 were observed.