Field emission from aligned carbon nanotubes prepared by thermal chemical vapor deposition of Fe-phthalocyanine

Abstract

The field emission from aligned multiwalled carbon nanotubes prepared by thermal chemical vapor deposition of Fe-phthalocyanine is reported, with emphasis on the current–voltage characteristics and current fluctuation. By running of a pristine emitter at high current and/or voltage for a long time, the onset voltage is lowered from 400 to 125 V and the field-enhancement factor increases from 360 to 1110, demonstrating geometrical reconstruction of the nanotube apex. Deviation from the Fowler–Nordheim relation is caused at a constant local electric field of ∼4×103 V/μm and is related to high-field conditioning. Electron emission current under a high current density condition (>10 mA/cm2) is stable and noiseless. The reason for current noise in the lower current density is discussed.

Hexagonal Boron Nitride Coated Carbon Nanotubes: Interlayer Polarization Improved Field Emission

“…where E is the electric field and, A and B are set as 1.56 × 10 -10 A.eV.V -2 and 6.83 × 10 9 eV -3/2 .V m -1 . 35 First, the linear F-N plot confirms electronic tunneling from emitters into vacuum in the presence of electric field (Fig. 7b).…”

Field emission properties of carbon nanotubes grown on silicon nanowire arrays

“…The second group of production methods is to synthesize carbon nanotubes directly on the substrates by chemical vapor decomposition of hydrocarbon in the presence of metal catalysts, such as iron and nickel. The field emission properties of carbon nanotubes grown on many kinds of substrates have been reported, such as silicon substrates [3,4], porous silicon substrates [5,6], quartz substrates [7,8], porous aluminum oxide templates [9], metal substrates [10] and plastic substrates [11]. But all the substrates mentioned above are flat.…”

Morphological effects on the field emission characteristics of zinc oxide nanotetrapods films

“…4 (b). The relationship of ln(J/E 2 ) with 1/E is linear in terms of the F-N electron emission theory [15,16]. The slope of the F-N fitting curve S F-N is described as, S F-N = Bφ 3/2 /β, where B = 6.83×10 3 V .…”