The study of One-dimensional Zinc Oxide Nanostructure Emitters

Field emission display (FED) is a kind of vacuum electron device, and its principle is very similar to that of a traditional cathode ray tube (CRT). The display performances of a FED, such as emission current and the driving voltage, are determinated largely by the field emitters. Besides the emission characteristic, the geometric factors, thermal stability and ambient insensitivity of the field emitter are also very important in a FED device. One dimensional nano zinc oxide materials have the properties of high aspect ratio, good mechanical performance and chemical stability. In this paper, the emission stability of nano ZnO emitters which has the tetrapod-like nanostructure, is studied. The ZnO cold cathode is fabricated with the screen printing method, and the emission characteristics are investigated in a vacuum microelectronic device using ITO anode. The emission stability recorded over time of the ZnO cathode is presented