Vanderbilt researchers have developed a highly efficient field emission emitter. This new emitter is fabricated from diamond and is thus very stable. The method used for the fabrication of this emitter results in a lowered costs and time for fabrication.
- The characteristics of solid diamond emitters is preferable to those of diamond coated emitters
- Current diamond emitters are inefficient or produce unstable emission currents
- Planar diamond films and ion-etched diamond structures are irregular or non-uniform
In this technology, local electric fields enhance the formation of submicron structures of monolithic diamond which are excellent emitters. The resulting devices can have diamond emitter element/array, in diode, triode, display, and sensor configurations.
- Very sharp tip curvatures (< 200 A)
- Small grain sizes at tip of emitter structure
- Ability to control carbon graphite content of diamond
- Ideal balance of emission efficiency and durability
- Applied field is lower compared to Si, Ge, GaAs, and metal surfaces
- Processing techniques compatible with IC and other fabrication methods
Intellectual Property Status