Numerical analysis of carbon nanotube field emitter arrays with embedded electron beam focusing structure

2005 ◽  
Author(s):  
Pil Goo Jun ◽  
Hyung Soo Uh ◽  
Byung Hwak Kwak ◽  
Hyung Wook Noh ◽  
Sang Sik Park ◽  
...  
Keyword(s):  
Electron Beam ◽  
Carbon Nanotube ◽  
Numerical Analysis ◽  
Field Emitter ◽  
Beam Focusing ◽  
Field Emitter Arrays

Optimization of Electron Beam Focusing for Gated Carbon Nanotube Field Emitter Arrays

2005 ◽  
Vol 52 (12) ◽  
pp. 2584-2590 ◽  
Author(s):  
J.H. Choi ◽  
A.R. Zoulkarneev ◽  
Y.-J. Park ◽  
D.S. Chung ◽  
B.K. Song ◽  
...  
Keyword(s):  
Electron Beam ◽  
Carbon Nanotube ◽  
Field Emitter ◽  
Beam Focusing ◽  
Field Emitter Arrays

Carbon nanotube field emitter arrays having an electron beam focusing structure

2004 ◽  
Vol 84 (6) ◽  
pp. 1022-1024 ◽  
Author(s):  
Jun Hee Choi ◽  
Andrei R. Zoulkarneev ◽  
Yong Wan Jin ◽  
Young Jun Park ◽  
Deuk Seok Chung ◽  
...  
Keyword(s):  
Electron Beam ◽  
Carbon Nanotube ◽  
Field Emitter ◽  
Beam Focusing ◽  
Field Emitter Arrays

Efficient Carbon Nanotube Field Emitter using Electrospun Carbon Nanofibers as a Flexible Electrode

2009 ◽  
Vol 1173 ◽  
Author(s):  
Hidetoshi Matsumoto ◽  
Kenichi Suzuki ◽  
Kazuma Tsuboi ◽  
Mie Minagawa ◽  
Akihiko Tanioka ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Carbon Fibers ◽  
Current Density ◽  
Chemical Vapor ◽  
Light Sources ◽  
Flexible Electrode ◽  
Field Emitter ◽  
Field Emitter Arrays ◽  
Thin Carbon ◽  
Cnt Field Emitter

AbstractThermal-stable, conductive, and flexible carbon fabric (CF), which is composed of thin carbon fibers prepared by electrospinning, was used for the substrate of carbon nanotube (CNT) field emitter arrays. The field emitter arrays were prepared by chemical vapor deposition (CVD). The current density-electric field characteristics revealed that the CNT field emitter arrays on CF produced a higher current density at a lower turn-on voltage compared to ones on a Si substrate. This emitter integrated with a gate electrode based on hierarchy-structured carbon materials, CNTs on CF, can be used for light sources, displays, and other electronic devices.

scholarly journals Nanocone-Shaped Carbon Nanotubes Field-Emitter Array Fabricated by Laser Ablation

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3244
Author(s):  
Jiuzhou Zhao ◽  
Zhenjun Li ◽  
Matthew Thomas Cole ◽  
Aiwei Wang ◽  
Xiangdong Guo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Laser Ablation ◽  
High Performance ◽  
Low Cost ◽  
Field Emitter ◽  
Beam Focusing ◽  
Field Emitter Arrays ◽  
Emitter Array ◽  
Field Emitter Array ◽  
Tip Radius

The nanocone-shaped carbon nanotubes field-emitter array (NCNA) is a near-ideal field-emitter array that combines the advantages of geometry and material. In contrast to previous methods of field-emitter array, laser ablation is a low-cost and clean method that does not require any photolithography or wet chemistry. However, nanocone shapes are hard to achieve through laser ablation due to the micrometer-scale focusing spot. Here, we develop an ultraviolet (UV) laser beam patterning technique that is capable of reliably realizing NCNA with a cone-tip radius of ≈300 nm, utilizing optimized beam focusing and unique carbon nanotube–light interaction properties. The patterned array provided smaller turn-on fields (reduced from 2.6 to 1.6 V/μm) in emitters and supported a higher (increased from 10 to 140 mA/cm2) and more stable emission than their unpatterned counterparts. The present technique may be widely applied in the fabrication of high-performance CNTs field-emitter arrays.

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