The synthesis and field emission property of carbon nanotubes on carbon fibers substrate

摘要

Using ferrocene as catalyst precursor, C{sub}2H{sub}2 as carbon source, carbon nanotubes (CNTs) with uniform density were synthesized on carbon fibers substrate by floating catalyst method. The morphology and microstructure were characterized by field emission scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM). The observation showed that the length of CNTs is about 2μm, the average space between adjacent CNTs is about 300nm and the diameter of CNT is about 45nm. The less dense "short and stubby" aligned CNTs films should have good electron field emission characteristics.