scholarly journals Fabrication of Stable Carbon Nanotube Cold Cathode Electron Emitters with Post-Growth Electrical Aging

Micromachines ◽  
2018 ◽  
Vol 9 (12) ◽  
pp. 648 ◽  
Author(s):  
Jung Hyun Kim ◽  
Jung Su Kang ◽  
Kyu Chang Park
Keyword(s):  
Carbon Nanotube ◽  
Electron Emission ◽  
Emission Current ◽  
Cold Cathode ◽  
Time Stability ◽  
Field Emitters ◽  
Initial Stage ◽  
Electrical Aging ◽  
Long Time ◽  
Electron Emitters

We fabricated carbon nanotube (CNT) cold cathode emitters with enhanced and stable electron emission properties and long-time stability with electrical aging as a post-treatment. Our CNT field emitters showed improved electrical properties by electrical aging. We set the applied bias for effective electrical aging, with the bias voltage defined at the voltage where Joule heating appeared. At the initial stage of aging, the electron emission current started to increase and then was saturated within 3 h. We understood that 5 h aging time was enough at proper aging bias. If the aging bias is higher, excessive heating damages CNT emitters. With the electrical aging, we obtained improved electron emission current from 3 mA to 6 mA. The current of 6 mA was steadily driven for 9 h.

A Fabrication of the High Emitter-Isolating-Layer for Printed Cold Cathode in Field Emission Display Panel

2012 ◽  
Vol 459 ◽  
pp. 567-570
Author(s):  
Xiao Quan Li
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Electron Emission ◽  
Emission Current ◽  
Field Emission Property ◽  
Cold Cathode ◽  
Field Emission Display ◽  
Field Emitters ◽  
Cathode Electrode ◽  
Insulation Performance

Using black insulation slurry as manufacture material, the high emitter-isolating-layer was fabricated on the cathode plate. The high emitter-isolating-layer which possessed good insulation performance was composed of many parallel emitter-isolation-stripes, which the bottom cathode electrode would be exposed in the center of the emitter-isolation-stripe. The carbon nanotube paste was prepared onto the cathode plate to form the field emitters. And the field emission display panel with high emitter-isolating-layer was demonstrated, which the better field emission property including the large emission current and stable electron emission was confirmed.

scholarly journals Carbon Nanotube Electron Sources: From Electron Beams to Energy Conversion and Optophononics

2014 ◽  
Vol 2014 ◽  
pp. 1-23 ◽  
Author(s):  
Alireza Nojeh
Keyword(s):  
Carbon Nanotubes ◽  
Field Emission ◽  
Electron Emission ◽  
Electron Beams ◽  
Thermionic Emission ◽  
Secondary Emission ◽  
Electron Sources ◽  
Field Emitters ◽  
Electron Microscopes ◽  
Electron Emitters

Carbon nanotubes have a host of properties that make them excellent candidates for electron emitters. A significant amount of research has been conducted on nanotube-based field-emitters over the past two decades, and they have been investigated for devices ranging from flat-panel displays to vacuum tubes and electron microscopes. Other electron emission mechanisms from carbon nanotubes, such as photoemission, secondary emission, and thermionic emission, have also been studied, although to a lesser degree than field-emission. This paper presents an overview of the topic, with emphasis on these less-explored mechanisms, although field-emission is also discussed. We will see that not only is electron emission from nanotubes promising for electron-source applications, but also its study could reveal unusual phenomena and open the door to new devices that are not directly related to electron beams.

Metal Coated, fs-Laser Fabricated Silicon Spikes as Electron Emitters for Cold Cathode Applications

2009 ◽  
Vol 1195 ◽  
Author(s):  
Emmanuel Spanakis ◽  
Marios Barberoglou ◽  
Panagiotis Tzanetakis ◽  
Costas Fotakis
Keyword(s):  
Electron Emission ◽  
Marked Change ◽  
Emission Characteristics ◽  
Cold Cathode ◽  
Metal Coatings ◽  
Operation Conditions ◽  
Device Applications ◽  
Fs Laser ◽  
Silicon Microstructures ◽  
Electron Emitters

AbstractWe have studied the effect of thin metal coatings on the electron emission characteristics of self-assembled silicon microstructures with nearly identical sharp features. We have employed a common template of spikes produced by fs-laser self-driven structuring of Si on which several different metals have been deposited. We find that, in the pristine state and in vacuum conditions achievable in device applications, all metal coatings do not result in marked change of either the minimum electric field necessary for emission or the maximum obtainable current density. In contrast, the durability of the emitters depends strongly on the metal used and is always enhanced with respect to bare Si. Furthermore, no signs of degradation were found within the 3-day time scale of our experiments with gold and chromium. On the contrary, these two metal coatings resulted in emission characteristics improving with time in typical operation conditions.

Electron emission and structure stability of carbon nanotube cold cathode driven by millisecond pulsed voltage

Vacuum ◽  
2020 ◽  
Vol 172 ◽  
pp. 109071 ◽  
Author(s):  
Yu Zhang ◽  
Yuanming Tan ◽  
Lizhou Wang ◽  
Baohong Li ◽  
Yanlin Ke ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electron Emission ◽  
Structure Stability ◽  
Cold Cathode ◽  
Pulsed Voltage

Effect of Electrical Aging on Field Electron Emission from Screen-Printed Carbon Nanotube Film

2007 ◽  
Vol 46 (2) ◽  
pp. 867-869 ◽  
Author(s):  
Hironobu Machida ◽  
Shin-ichi Honda ◽  
Shunjiro Fujii ◽  
Katsuya Himuro ◽  
Hideyasu Kawai ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electron Emission ◽  
Field Electron Emission ◽  
Carbon Nanotube Film ◽  
Field Electron ◽  
Electrical Aging ◽  
Screen Printed

scholarly journals Study on enhanced electron emission current of carbon nanotube by thermal and HF treatments

2008 ◽  
Vol 17 (2) ◽  
pp. 90-95 ◽  
Author(s):  
K.S. Kim ◽  
J.H. Ryu ◽  
C.S. Lee ◽  
H.E. Lim ◽  
J.S. Ahn ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electron Emission ◽  
Emission Current
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