The present invention is directed toward cathodes and cathode materials comprising
carbon nanotubes (CNTs) and particles. The present invention is also directed toward
field emission devices comprising a cathode of the present invention, as well as
methods for making these cathodes. In some embodiments, the cathode of the present
invention is used in a field emission display. The invention also comprises a method
of depositing a layer of CNTs and particles onto a substrate to form a cathode
of the present invention, as well as a method of controlling the density of CNTs
used in this mixed layer in an effort to optimize the field emission properties
of the resulting layer for field emission display applications.