A self-DLC coated cathode plasma source

A novel self-microwave plasma source modified by diamond-like carbon (DLC) coating self-cathode for density enhancement was devised. This simple method had been once routed for enhanced efficient microwave plasma with very low-cost. The coating parameters in fabrication of the self-coated DLC cathode for plasma density enhancement were investigated. DLC-Al cathodes coating by self cathode of microwave plasma source were fabricated to control and yielded strong non-activated emission. The novel cathodes showed enhancement of current density up to 240%. In addition, the contamination in the plasma source could be avoided with the new cathodes.