Field Emission Properties of Spiral Pattern by Screen Printing

Abstract

A carbon-nanotube-based flat-panel light unit with an aluminum metal anode and an innovative spiral emitter pattern was fabricated in this study. In comparison with roundness and stripe cathode structures, the results show that the structure we proposed has excellent emission performance, namely, high field emission current, no unexpected arcing, high illumination, and good uniformity. Moreover, an emission current density of 5.5 mA/cm2 under an electric field of about 2.9 V/µm, and a luminance of 21700 cd/m2 were demonstrated.