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In the paper, we examine the validity of traditional electron models (e.g. field emission, thermionic emission and photoemission) for graphene, and then propose new electron emission mechanisms and models to account for the unique properties of graphene. Also, some applications based on novel emission mechanism are explored.
In this contribution we report on field emission (FE) cathodes based on thin-film LED-technology and surface texturing. The FE cathode can be used both as an n-GaN cathode with an electrical contact at the top side metallization as well as a pn-GaN diode contacting only the p-GaN layer at the bottom side of the structure. The local and integral FE properties of the textured surface of the LED structure...
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