Effect of different vacuum on field emission of carbon nanotube arrays

2020 ◽  
Vol 64 (1-4) ◽  
pp. 675-683
Author(s):  
Jiaming Hu ◽  
Baodong Bai ◽  
Dezhi Chen
Keyword(s):  
Field Emission ◽  
Atmospheric Pressure ◽  
Reference Value ◽  
Emission Current Density ◽  
Emission Current ◽  
Collision Probability ◽  
Carbon Nanotube Arrays ◽  
Field Emission Current ◽  
Gas Molecules ◽  
Density Equation

In this paper, the electron-molecule collision ionization is added to field emission under non-vacuum conditions, and the change of emission current caused by vacuum adjustment in field emission of carbon nanotubes is explained. The field emission current density equation under non-vacuum conditions is established. Through the theoretical analysis and the processing of experimental data, it can be concluded that when other variables are controlled unchanged, the change of pressure will affect the concentration of gas molecules in the air and the collision probability with electrons, then the density of emission current is changed. The study has a certain reference value for the application of field emission in low vacuum and atmospheric pressure.

Large field emission current density from well-aligned carbon nanotube field emitter arrays

2001 ◽  
Vol 1 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Jung Inn Sohn ◽  
Seonghoon Lee ◽  
Yoon-Ho Song ◽  
Sung-Yool Choi ◽  
Kyoung-Ik Cho ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
Large Field ◽  
Field Emitter ◽  
Field Emitter Arrays ◽  
Field Emission Current ◽  
Field Emission Current Density

Ultrahigh field emission current density from nitrogen-implanted ZnO nanowires

2010 ◽  
Vol 21 (9) ◽  
pp. 095701 ◽  
Author(s):  
Qing Zhao ◽  
Jingyun Gao ◽  
Rui Zhu ◽  
Tuocheng Cai ◽  
Sheng Wang ◽  
...  
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Zno Nanowires ◽  
Emission Current ◽  
Ultrahigh Field ◽  
Field Emission Current ◽  
Field Emission Current Density

scholarly journals Effects of Antimony Deposition on Field-Emission Current Density of Ge/Si

2021 ◽  
Vol 9 (2) ◽  
Author(s):  
Veronika Burobina
Keyword(s):  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Field Emission Current ◽  
Current Voltage ◽  
Field Emission Current Density ◽  
20 Nm

Abstract To estimate the field-emission current density of a Ge/Si heterosystem, 20-nm germanium/silicon (100) samples were grown by molecular beam epitaxy. The surface of one sample was covered with a layer of antimony, which was removed in vacuum prior to the samples being measured. A second sample of Ge/Si was exposed to room air in the absence of antimony. The current–voltage characteristics of both samples obtained by scanning tunneling microscopy (STM) were discovered to be in agreement with classical Fowler–Nordheim theory. The density of emission current from Ge nanocrystal exceeds the density of emission current from the wetting layer of Ge/Si. The density of emission current of pure Ge nanocrystal is less than the density of emission current of Ge nanocrystal with adsorption layers.

Low turn-on field and high field emission current density from Ag/TiO2 nanocomposite

2016 ◽  
Vol 657 ◽  
pp. 167-171 ◽  
Author(s):  
Girish P. Patil ◽  
Amol B. Deore ◽  
Vivekanand S. Bagal ◽  
Dattatray J. Late ◽  
Mahendra A. More ◽  
...  
Keyword(s):  
Field Emission ◽  
Current Density ◽  
High Field ◽  
Emission Current Density ◽  
Emission Current ◽  
Turn On ◽  
Field Emission Current ◽  
Field Emission Current Density
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