Characterization Of Field Emission Properties For Nanosheets
Field emission is an electron emission produced by a strong electric field. When the electric field applied to sharp
edges on materials, electrons are extracted to vacuum by quantum mechanical tunneling over potential barrier. The efficiency
of field emission is mainly determined by electron emitter and many efforts have been dedicated for more stable and smaller
field emitters. It has been shown that nanomaterials such as carbon nanotubes and nanowires have advantages compared to
bulk materials due to their excellent chemical and physical properties and small size.
Graphene is a nanomaterial getting great research attentions due to its superior electrical and mechanical properties such as
good electrical conductivity and flexibility. Graphene is a two-dimensional (2D) structure and its thickness is atomically thin
which is suitable for field emission effect. In this study, we characterize field emission properties of graphene nanosheets such
as graphene and graphene oxide. The result is beneficial for field emission display using graphene nanosheets.