A surface-conducted field emission device with suspended graphene cathodes

Efficient field emission characteristics from a planar-gate surface-conduction electron source with ZnO emitters

“…5(a)-(c) depict the emission process of the planar-gate surface-conduction electron source with ZnO nanorods. ZnO nanorods synthesized on the cathode act as excellent field emission emitters due to their high electric field and the emission electrons have initial velocity [42]. The emission electrons are absorbed by the anode plate when the transverse electric field E t (formed by gate voltage) is lower than the longitude electric field E n (formed by anode voltage), as shown in Fig.…”

“…Lu et al studied the field emission characteristics of planar-gate-type electron source with carbon nanotubes [19]. Wu et al studied the surface-conducted electron source with suspended grapheme cathode, which can apply for field emission device [20]. Compared with these conventional electron sources, the emitters are deposited on the cathode and C-G gap in the novel planar-gate surface-conduction structure, which has been paid much attention due to a simple structure and fabrication process, a low driving voltage, high emission efficiency and stable field emission characteristics.…”

Edge field emission of large-area single layer graphene

“…Together with high electrical and thermal conductivity, mechanical stability and chemical inertness, it provides a possibility for efficient lowvoltage emission of electrons. The applicability of graphene based FE electron sources has been demonstrated for single and few-layer graphene films in FE displays [2], light sources [3,4], electron guns [5,6], microelectronic FE devices [7,8] etc.…”