FABRICATION OF CARBON NANOTUBE FILM ARRAYS FOR FIELD EMISSION FLAT PANEL DISPLAY APPLICATION

Abstract

The unique electron field emission properties of carbon nanotube films are promising for flat panel display application as the cold cathode. In this work, the multiwall carbon nanotube (10–10 2 nm in diameter, and 10 3 –10 4 nm in length) film arrays (the pixel size: 50 μ m ×50 μ m ) were deposited on the patterned Ni–Si substrate from hydrocarbon precursor ( C 2 H 2 / H 2 ) by chemical vapor deposition at low temperature (550°C). The patterned films were characterized by scanning electron microscopy and Raman spectroscopy. The carbon nanotube film arrays exhibit good electron emission properties, e.g. low threshold emission field (below 2 V/μm), high emission current density (above 1 mA/cm 2 at 10 V/μm), and high emission luminance spot density on the phosphor coated-ITO(indium tin oxide)-glass anode. These properties are good enough for high-resolution flat panel display application using carbon nanotube film arrays as the cathode.