Field emission characteristics of CNT film emitters according to emission tip shapes

We fabricated carbon nanotube (CNT) field emitters using a CNT film, which indicated the point-type CNT film emitter, and evaluate field emission properties of the CNT field emitter in the triode configuration. The CNT film emitters showed good emission properties such as the low turn-on field, the high emission current and emission stability. We also investigated field emission properties of the CNT film emitter by adjusting the angle of tip of the CNT film.