The impact of surface hydrogenation on the thermionic electron emission from polycrystalline diamond films

2014 ◽  
Vol 211 (10) ◽  
pp. 2238-2243 ◽  
Author(s):  
S. Elfimchev ◽  
Sh. Michaelson ◽  
R. Akhvlediani ◽  
M. Chandran ◽  
H. Kaslasi ◽  
...  
Keyword(s):  
Electron Emission ◽  
Diamond Films ◽  
Polycrystalline Diamond ◽  
The Impact ◽  
Thermionic Electron Emission

Field Electron Emission from Carbon Nanotube Films on Diamond Films

2005 ◽  
Vol 475-479 ◽  
pp. 3587-3590
Author(s):  
K.J. Liao ◽  
W.L. Wang ◽  
Y.T. Wang ◽  
J.W. Lu ◽  
X.L. Sun
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Electron Emission ◽  
Diamond Films ◽  
Chemical Vapour ◽  
Polycrystalline Diamond ◽  
Field Electron Emission ◽  
Field Electron ◽  
Nanotube Films

The field electron emission from carbon nanotube films on polycrystalline diamond films was investigated. The carbon nanotubes and diamond films on Si substrates were prepared by a conventional hot filament chemical vapour deposition. The films obtained were characterized by scanning electron microscopy and Raman spectroscopy. The field emission properties of the samples were measured in an ion-pumped vacuum chamber at a pressure of 10-6 Pa.. The experimental results showed that the field emission behaviours of carbon nanotubes/diomond films structure have greatly been improved as compared with carbon nanotubes and diamond films, respectively. A turn-on field of 1.0 V/µm and a maximum current of 500 µA at 1.5 V/µm were observed, which were lower than those of carbon nanotubes and polycrystalline diamond films, respectively. This improvement was attributed to the tip shape of sample surface, which provided an additional local increase in electric field at the tube ends.

Spatial correlation of photo-induced and thermionic electron emission from low work function diamond films

2013 ◽  
Vol 40 ◽  
pp. 12-16 ◽  
Author(s):  
Nils Neugebohrn ◽  
Tianyin Sun ◽  
Franz A.M. Koeck ◽  
Gary G. Hembree ◽  
Robert J. Nemanich ◽  
...  
Keyword(s):  
Work Function ◽  
Spatial Correlation ◽  
Electron Emission ◽  
Diamond Films ◽  
Thermionic Electron Emission

In situ reactivation of low-temperature thermionic electron emission from nitrogen doped diamond films by hydrogen exposure

2014 ◽  
Vol 50 ◽  
pp. 151-156 ◽  
Author(s):  
Vincenc Nemanič ◽  
Marko Žumer ◽  
Janez Kovač ◽  
Franz A.M. Koeck ◽  
Robert J. Nemanich
Keyword(s):  
Low Temperature ◽  
Electron Emission ◽  
Diamond Films ◽  
Nitrogen Doped ◽  
Hydrogen Exposure ◽  
Thermionic Electron Emission
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