Growth and Field Emission Characteristics of Carbon Nanotubes Using Co/Cr/Al Multilayer Catalyst

Cheng, Hsiu‐Fung; Lin, Kao Chao; Tai, Han Chung; Juan, Chao-Kuei; Lai, Rui; Liu, Yaw Shine; Syu, Yu Ying

doi:10.1143/jjap.46.4359

Cited by 10 publications

(4 citation statements)

References 29 publications

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“…The codeposited Co-Ti layer suppresses the coalescence of Co nanoparticles in order to obtain uniformly distributed CNT pillars. 22) The diameter and interpillar spacing of CNT pillars are set to 50 and 30 m, respectively. Finally, CNT pillars are grown on a patterned catalyst by thermal CVD.…”

Section: Methodsmentioning

confidence: 99%

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Pillar Height Dependence of Field-Emission Properties in an Array of Carbon Nanotube Pillars

Chang

Juan

Cheng³

2013

Jpn. J. Appl. Phys.

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Carbon nanotube pillars with optimal field-emission properties, including a high field enhancement factor β of 5384 and a low turn-on field E to of 0.84 V/µm, have been achieved when the ratio of interpillar spacing to pillar height is 2. However, when this ratio exceeds 2, the field enhancement factor increases with increasing pillar height since the field can be enhanced by increasing the aspect ratio. When the ratio is smaller than 2, the field enhancement factor decreases with increasing pillar height owing to the increased field-screening effect. A simulation has been performed to verify the experimental results.

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Section: Methodsmentioning

confidence: 99%

“…The optimal CNT pillar has a highly uniform emission area and a high current density owing to the uniform length of the CNT synthesized using the Co-Ti/Ti codeposited catalyst layer and the better adhesion between the CNT and substrate. 22)…”

Section: E Pe Ro-r E Pe Ro-l E Pe Rm-r E Pe Rm-l E Pe C-r E Pe C-l E ...mentioning

confidence: 99%

Pillar Height Dependence of Field-Emission Properties in an Array of Carbon Nanotube Pillars

Chang

Juan

Cheng³

2013

Jpn. J. Appl. Phys.

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“…The codeposited Co-Ti layer can suppress the coalescence of Co nanoparticles, resulting in uniformly distributed CNT pillars. 11) Finally, CNTs are grown on the patterned catalysts as the pillar structures by thermal CVD. For the thermal CVD procedure, first, the catalytic metal is pretreated with hydrogen at 600 °C for 5 min at a flow rate of 300 sccm to produce nanoparticles.…”

Section: Experiments Proceduresmentioning

confidence: 99%

Densification effects of the carbon nanotube pillar array on field-emission properties

Wang¹,

Chou²,

Liao³

et al. 2016

Jpn. J. Appl. Phys.

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In this study, a simple densification method for carbon nanotube (CNT) pillars is proposed to achieve high-performance field emission characteristics and stable emission. Through capillary force during solution evaporation, the CNT density in each pillar can be increased by about six times without causing damage to the crystallinity of CNTs. The densified CNT pillars exhibit lower series resistance, sharper pillars, better contacts, higher thermal conductivity, and better mechanical stiffness than as-grown ones. Therefore, the threshold field of the field emitter with such CNT pillars of 50 µm height can be reduced to 1.98 V/µm, as compared with 2.2 V/µm for the undensified ones. Moreover, the fluctuation of field-emission current decreases from 15.5 to 9.4% after the stress tests at a field of 2 V/µm for 1800 s. These findings imply that the densified CNT pillars are promising for the field-emission applications.

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“…The SEM image in figure 4(a) shows that they have a spaghetti-like appearance. This kind of arrangement is preferred over well-aligned fibers since it has been shown that they have better field emission properties [27]. The TEM image in figure 4(b) shows that the nanofibers are not completely hollow.…”

Section: Carbon Nanofibersmentioning

confidence: 99%

Nanocrystalline silicon as the light emitting material of a field emission display device

Biaggi-Labiosa¹,

Solá²,

Resto³

et al. 2008

Nanotechnology

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A nanocrystalline Si-based paste was successfully tested as the light emitting material in a field emission display test device that employed a film of carbon nanofibers as the electron source. Stable emission in the 550-850 nm range was obtained at 16 V µm(-1). This relatively low field required for intense cathodoluminescence (CL) from the PSi paste may lead to longer term reliability of both the electron emitting and the light emitting materials, and to lower power consumption. Here we describe the synthesis, characterization, and analyses of the light emitting nanostructured Si paste and the electron emitting C nanofibers used for building the device, including x-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy. The corresponding spectra and field emission curves are also shown and discussed.

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Growth and Field Emission Characteristics of Carbon Nanotubes Using Co/Cr/Al Multilayer Catalyst

Cited by 10 publications

References 29 publications

Pillar Height Dependence of Field-Emission Properties in an Array of Carbon Nanotube Pillars

Pillar Height Dependence of Field-Emission Properties in an Array of Carbon Nanotube Pillars

Densification effects of the carbon nanotube pillar array on field-emission properties

Nanocrystalline silicon as the light emitting material of a field emission display device

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