Preparation of Carbon Nanofiber Emitters for Field Emission Display using Organic Thin Films

Abstract

The purposes of this work are to prepare a low density carbon nanofiber (CNF) emitter by a spray spreading method and to investigate the performance of field emission. A sprayed paste was prepared with organic solution of tetrahydrofuran and also with binders of Au paste and Polycarbonate. The used CNF were massively synthesized by a thermal chemical vapor deposition and were burned to eliminate amorphous carbon and catalyst The diameter ofthe CNF was about 0.1 Jlmcjl. Two types ofCNF were studied with the length of ea. 10-20 J.llD. (normal-CNF) and ea. 1.5 Jlffi (cut-CNF). In the normal-CNF emitter the current density at 10 V/J.UD. was about 1.4mA/cm 2 with an electric field enhancement factor~ of about 1000, while 0.08mA/cm 2 with ~ of 4500 in the cut-CNF emitter. It was confirmed that the isolated CNF do play an important role as effective emitter sites.

Fabrication of Carbon Nanofiber Emitters for Excitation of Organic Phosphor Thin Films

“…1000 C. The obtained CNFs were baked above 2500 C for 30 min to eliminate amorphous carbon and catalysts. 7) The CNFs used were multiwalled with a diameter of about 0.1 mm (hereafter, normal-length CNFs). The shorted CNFs (hereafter, cut-CNFs), which were prepared from the normal-length CNFs by a fragmentation process, were also used.…”