Preparation of Double Silver Mixed Interlayer Carbon Nanotube Cathode and Improvement of Electron Emission Performance in Wood Material Printing

Abstract

In order to improve the photochromic resistance of printed wood products, the preparation of
double silver mixed interlayer carbon nanotube cathode in wood material printing was studied
in this paper. A novel dual silver-mixing intermediate-layer carbon nanotube (DSMIL-CNT)
cathode was fabricated on a horniness cathode faceplate. The silver-CNT composite electrode
paste, which included numerous multi-walled CNTs, was printed on a transparent bar electrode
to form a silver-CNT composite electrode with circular convex-shaped external edges. The
particles-mixed CNT layer paste, containing many minute Ag particles, was sintered to form the
particles-mixed CNT layer. The silver-CNT composite electrode and the particles-mixed CNT
layer were placed between the transparent bar electrode and the top emitter layer. The CNTs on
the top emitter layer were mainly utilized to emit electrons. Simple and feasible fabrication of
DSMIL-CNT cathode adopted the reliable and low-cost screen-printing, baking, and sintering
process. Using the DSMIL-CNT cathode, a flat panel display was fabricated to form the
emission image. As compared to a common bar electrode CNT cathode, the tested DSMIL-CNT
cathode possessed superior electron emission properties, stronger adhesion performance, and
better emission current stability. The maximum electron emission current was 2915.7A, and
the largest fluctuation range of electron emission current did not exceed 1.2% in the testing
course of 120 min. In the image testing, the emission image of DSMIL-CNT cathode possessed
higher luminous brightness and better luminance uniformity than the common bar electrode one.
The fabricated DSMIL-CNT cathode is considered lucrative for the commercialization of flat
panel displays. It possesses considerable potential for practical applications due to its
preparation simplicity, excellent performance, and low production cost.