Influence of the microwave plasma deposition regime on the field-electron emission characteristics of nanodiamond-graphite composite films

2015 ◽  
Vol 41 (5) ◽  
pp. 489-492 ◽  
Author(s):  
N. A. Bushuev ◽  
P. D. Shalaev ◽  
A. R. Yafarov ◽  
R. K. Yafarov
Keyword(s):  
Electron Emission ◽  
Microwave Plasma ◽  
Plasma Deposition ◽  
Composite Films ◽  
Field Electron Emission ◽  
Emission Characteristics ◽  
Graphite Composite ◽  
Field Electron

Preparation and Field Emission Characteristics of CNx Nanotubes Thin Film

2005 ◽  
Vol 475-479 ◽  
pp. 3595-3598
Author(s):  
Lan Zhang ◽  
Hui Zhong Ma ◽  
Xue Xiang Li ◽  
Ning Yao ◽  
Bing Lin Zhang
Keyword(s):  
Thin Films ◽  
Field Emission ◽  
Electron Emission ◽  
Photoelectron Spectroscopy ◽  
Microwave Plasma ◽  
Field Electron Emission ◽  
Emission Characteristics ◽  
Flow Ratio ◽  
X Ray ◽  
Field Electron

Carbon nitride nanotubes (CN-NT) thin films were prepared on Ni-Cr coated glass substrate by microwave plasma enhanced chemical vapor deposition at a relatively low temperature of 600～650 °C. The morphology of the films were observed by scanning electron microscopy. The microstructure of the film were analyzed by x-ray photoelectron spectroscopy, x-ray diffraction, and Raman spectroscopy. The characteristics of field emission of CN-NT thin films were measured. Experimental results indicate that the film structure and properties of the field electron emission are related to flow ratio of N2 to CH4. When the flow ratio of N2 to CH4 was 3.3, the obtained film had a better field electron emission characteristics. The turn-on field of the film was 3.7 V/µm . The current density was 413.3 µA/cm2 at an electric field of 8 V/µm.

Field Electron Emission Characteristics of Single-Crystal GdB6 Conductive Ceramics

2020 ◽  
Vol 49 (9) ◽  
pp. 5622-5630 ◽  
Author(s):  
Yixin Xiao ◽  
Xin Zhang ◽  
Rongrong Li ◽  
Hongliang Liu ◽  
Yanlin Hu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Electron Emission ◽  
Field Electron Emission ◽  
Emission Characteristics ◽  
Field Electron ◽  
Conductive Ceramics

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.

Field Electron Emission from Carbon Nanotube/ZnO Composite Films Prepared by Electrodeposition

2013 ◽  
Vol 52 (9R) ◽  
pp. 091801 ◽  
Author(s):  
Junki Fujii ◽  
Kazuyuki Nobusawa ◽  
Atsushi Ikeda ◽  
Hisao Yanagi ◽  
Aishi Yamamoto ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electron Emission ◽  
Composite Films ◽  
Field Electron Emission ◽  
Field Electron
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