Field emission from well-aligned, patterned, carbon nanotube emitters

Abstract

We have developed a process to fabricate well-aligned, patterned, carbon nanotube field emitters on glass substrates. The process consists of depositing and patterning a nickel-based metal line on the glass substrate followed by a bias-enhanced microwave plasma chemical vapor deposition to grow carbon nanotube emitters. A turn-on field of 1.2 V/μm, and emission currents of 1 mA/cm2 at 3 V/μm were achieved on well-aligned carbon nanotube emitters. A test of cathode-ray tube lighting elements now underway suggests a lifetime of exceeding 10 000 h.

Raman Spectroscopy and Field Emission Measurements on Catalytically Grown Carbon Nanotubes

“…Carbon nanotubes [1] have been studied already for several years and are now considered for applications in miscellaneous devices such as tubular lamps [2], flat panel displays [3], lighting elements [4] or nanometric electronic devices [5,6]. Such devices make precise demands on the properties of the tubes, as the length, diameter and electronic properties have a strong influence on the final performance of the device.…”

Magnetic catalyst residues and their influence on the field electron emission characteristics of low temperature grown carbon nanotubes

“…Here, note that in most cases, one cannot rule out the effect of the existence of catalytic metals on the tip ends of CNTs or in outer sites such as bridge and atop sites on the C-C bonds. [11][12][13][14] On the other hand, Binh 15 et al studied a splitting of the electron beams for the nanotips as an atomic scale beam splitter. This phenomenon was explained as the strong magnetic interaction at the apex of the nanosized ferromagnetic electron emitter.…”

Formation of bamboo-shape carbon nanotubes by controlled rapid decomposition of picric acid

“…The thickness of the inner dome walls is always thinner than that of the tube walls. This type of bamboo-like tubes is structurally similar to those frequently obtained by other methods [1], [2], [6], [7], [8], [9] and [10]. However, unlike the previous observations of arc-resulted tubes [1] and [2], the dimensions of the different compartment cavities in an individual tube are not always uniform (Fig.…”

“…Until now, bamboo-shape nanotubes have been fabricated through various processes such as arc-discharge of graphite electrodes [1] and [2], pyrolysis of organometallic compounds [6] and [7], thermal chemical vapor deposition (CVD) [8] and [9], and plasma-enhanced CVD [10], [11], [12] and [13]. Some corresponding growth models have also been proposed [1], [2], [6] and [8].…”