Emission Characteristics of Arrays of Diamondcoated Silicon Tips

1996 ◽  
Vol 424 ◽  
Author(s):  
Douglas A.A. Ohlberg ◽  
Alec A. Talin ◽  
Thomas E. Felter ◽  
E. I. Givargizov
Keyword(s):  
Electron Emission ◽  
Emission Characteristics ◽  
Surface Emission ◽  
Turn On ◽  
Site Density ◽  
Burn Out ◽  
Emission Behavior ◽  
Silicon Whisker ◽  
Whisker Density

ABSTRACTThe electron emission behavior of diamond-coated silicon whisker arrays was examined with a point-probe scanner and compared with the behavior of uncoated silicon whiskers as well as with diamond crystallites on a flat Si surface. Emission in all cases was inhomogeneous, and the emission site density was less than the whisker density. Both the diamond-coated and uncoated whiskers displayed a distribution of turn-on fields which peaked at around 10 V/µ, but the uncoated whiskers were observed to burn out if emission outputs exceeded 0.3 µA.

Investigation of Electron Emission From Si and Hot Filament CVD Diamond

1996 ◽  
Vol 424 ◽  
Author(s):  
J. Y. Shim ◽  
E. J. Chi ◽  
S. J. Rho ◽  
H. K. Baik
Keyword(s):  
Field Emission ◽  
Electron Emission ◽  
Cvd Diamond ◽  
Emission Characteristics ◽  
Turn On ◽  
Low Field ◽  
Hot Filament Cvd ◽  
Diamond Peak ◽  
Diamond Grain ◽  
Hot Filament

ABSTRACTThe field emission characteristics of the Si emitters and the diamond coated Si emitters are investigated. The Fowler-Nordheim plots of the two types of Si emitters show linear slopes. It means that the I-V characteristics follow the Fowler-Nordheim relation. Field emission for the two types of diamond coated Si emitters exhibits significant enhancement both in turn-on voltage and total emission current. The Raman spectrum shows that the high intensity graphite peak is observed with diamond peak and thereby large amounts of graphite may be included in the diamond grain boundary. It seems to be thought that the graphite participates in the low field emission. However, further investigations are needed to understand whether the graphite may enhance the emission characteristics of diamond or not.

Stable Electron Emission from ZnO Nanoemitters Grown with Pseudo-Catalyst

2014 ◽  
Vol 1707 ◽  
Author(s):  
Su-Hua Yang ◽  
Yi-Ming Hsu ◽  
Ming-Wei Tsai ◽  
Ting-Jen Hsueh
Keyword(s):  
Aspect Ratio ◽  
Vapor Phase ◽  
Electron Emission ◽  
Seed Layer ◽  
Emission Current Density ◽  
Growth Conditions ◽  
Emission Characteristics ◽  
Vapor Phase Transport ◽  
Turn On ◽  
Phase Transport

ABSTRACTCatalyst-free vapor phase transport was applied for the growth of ZnO nanoemitters. A single-crystalline ZnO:Al seed layer was deposited and used as a pseudo-catalyst. The desired morphology of nanostructures can be achieved by means of modifying the growth rates of crystal planes via adjustment in the growth conditions. The field emission characteristics of ZnO nanoemitters satisfied the Fowler-Nordheim relationship. The high aspect ratio of nanoemitters had a low turn-on electric field of 0.18 MV/m at emission current density of 0.1 μA/cm2. A stable electron emission with a variation of less than 14% was measured.

scholarly journals Secondary electron emission characteristics of Al2O3 coatings prepared by atomic layer deposition

AIP Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 095303 ◽  
Author(s):  
Junjiang Guo ◽  
Dan Wang ◽  
Yantao Xu ◽  
Xiangping Zhu ◽  
Kaile Wen ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Atomic Layer ◽  
Emission Characteristics ◽  
Layer Deposition

Electron emission characteristics of metal/diamond field emitters

1997 ◽  
Vol 6 (5-7) ◽  
pp. 889-892 ◽  
Author(s):  
Takashi Sugino ◽  
Yukio Iwasaki ◽  
Seiji Kawasaki ◽  
Reiji Hattori ◽  
Junji Shirafuji
Keyword(s):  
Electron Emission ◽  
Emission Characteristics ◽  
Field Emitters

Field Emission Properies of CNTs Treated by Helium Plasma

2011 ◽  
Vol 347-353 ◽  
pp. 4008-4011
Author(s):  
Shao Lin Xue ◽  
Shu Xian Wu ◽  
Ran Huang ◽  
Zi Xin Jiang ◽  
Jian Fang Fang
Keyword(s):  
Field Emission ◽  
Emission Current Density ◽  
Treatment Method ◽  
Emission Characteristics ◽  
Helium Plasma ◽  
Turn On ◽  
Field Emission Current ◽  
Field Emission Current Density ◽  
Surface Morphologies ◽  
Screen Printed

This paper presented a novel post-treatment method of He plasma,which could effectively improve the field emission characteristics of screen-printed CNTs cathodes. Notable changes in the surface morphologies of screen-printed CNTs cathodes were investigated by scanning electron micro scope (SEM) as the f unction of treatment by He plasma.The results showed the post-treated CNTs cathodes hold lower turn-on electric field,higher field emission current density,more emission sites,and better uniformity than those of untreated ones.

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