Field penetration and its contribution to field enhanced thermionic electron emission from nanocrystalline diamond films

2006 ◽  
Vol 15 (11-12) ◽  
pp. 2006-2009 ◽  
Author(s):  
F.A.M. Koeck ◽  
R.J. Nemanich
Keyword(s):  
Electron Emission ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Nanocrystalline Diamond Films ◽  
Thermionic Electron Emission ◽  
Field Penetration

Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films

2003 ◽  
Vol 12 (3-7) ◽  
pp. 474-480 ◽  
Author(s):  
F.A.M. Köck ◽  
J.M. Garguilo ◽  
R.J. Nemanich ◽  
S. Gupta ◽  
B.R. Weiner ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Electron Emission ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Nanocrystalline Diamond Films

The Microstructure and Enhanced Field Electron Emission Properties of Boron-Doped Nanocrystalline Diamond Films by Microwave Plasma Chemical Vapor Deposition

2010 ◽  
Vol 152-153 ◽  
pp. 413-417
Author(s):  
You Sheng Zou ◽  
Zheng Xue Li ◽  
Hao Yang
Keyword(s):  
Electron Emission ◽  
Microwave Plasma ◽  
Diamond Films ◽  
Field Electron Emission ◽  
Nanocrystalline Diamond ◽  
Gas Mixture ◽  
Emission Properties ◽  
Boron Doped ◽  
Field Electron ◽  
Nanocrystalline Diamond Films

The boron-doped nanocrystalline diamond films were prepared on Si(100) substrates by microwave plasma chemical vapor deposition in gas mixture of CH4/H2/trimethylboron (TMB) with B/C ratio in the range of 0-1900ppm. The dependencies of surface morphology, microstructure, phase composition and field electron emission properties on the B/C ratio were systematically investigated by scanning electron microscope, X-ray diffractometer, visible and UV Raman spectroscopy. The results show that the diamond grains gather together forming ball-like clusters with inhomogeneous size, the doped boron atoms can promote the growth of plane (111) surface and terminate the diamond growth sites, resulting in the reduction of growth rate with the increase of B/C ratio in the gas mixture. The two peaks located at approximately 500 and 1220cm-1 resulted from Fano interference were observed in the visible Raman spectra for the heavily boron-doped nanocrystalline diamond film, and the sp2/sp3 ratio of carbon bonds increased with B/C ratio increasing in gas mixture. The field electron emission performances of the boron-doped nanocrystalline diamond films were obviously dependent on B/C ratio in the gas mixture, and boron doping can improve their field electron emission properties remarkably. The low turn-on electric field of 7.6V/μm was achieved for the boron-doped nanocrystalline diamond film deposited at B/C ratio of 1900ppm.

scholarly journals Microstructural Effect on the Enhancement of Field Electron Emission Properties of Nanocrystalline Diamond Films by Li-Ion Implantation and Annealing Processes

ACS Omega ◽  
2018 ◽  
Vol 3 (8) ◽  
pp. 9956-9965 ◽  
Author(s):  
Kamatchi Jothiramalingam Sankaran ◽  
Chien-Jui Yeh ◽  
Srinivasu Kunuku ◽  
Joseph Palathinkal Thomas ◽  
Paulius Pobedinskas ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Electron Emission ◽  
Diamond Films ◽  
Field Electron Emission ◽  
Nanocrystalline Diamond ◽  
Emission Properties ◽  
Field Electron ◽  
Nanocrystalline Diamond Films ◽  
Li Ion ◽  
Microstructural Effect
Sign in / Sign up

Export Citation Format

Share Document