| 초록 |
Field emission, which is the extraction of electrons from the surface of a material through the solid-vacuum potential barrier by quantum mechanical tunneling induced by an external electric field, has attracted considerable attention because of its numerous applications in technologies such as field-emission displays, back-light units, and electron guns. In this study, vertical N-doped carbon nanotube (VNCNT) arrays were decorated with Au, Ru, or Mn nanoparticles, and the effects of the particles on the field-emission properties were investigated. The surfaces of the VNCNT arrays were subsequently decorated with metal particles, and the vertical alignment of the NCNT arrays was maintained by high-vacuum annealing. Our results revealed that the field-emission properties of VNCNT arrays may be tuned by decoration with metal particles and that particle decoration with a low-work-function material may be used to develop efficient field emitters. |
