Modeling of Klein Tunneling for Electron Field Emission from Graphene.

摘要

Since the discovery of large size graphene in 2004, it has initiated very active research activities in understanding the unique electronic properties of graphene, including high carrier mobility, ballistic transport, and linear light-like energy dispersion relationship. Promising applications include field effect transistors, sensors, spintronic devices, and many others in nanoelectronics. In recent experimental papers, graphene has shown its potentials to be an electron source in vacuum electronics. Practical applications include being an efficient emitter for display backlight sources like LCD and LED, or even as the active emitters for field emitter flat panel display like carbon nanofibers and carbon nanotubes. If the emitted current density can be improved to high current regime, it can be also used as intense electron source for high power microwave source.