scholarly journals Field Emission Properties of the Graphene Double-Walled Carbon Nanotube Hybrid Films Prepared by Vacuum Filtration and Screen Printing

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Jinzhuo Xu ◽  
Tao Feng ◽  
Yiwei Chen ◽  
Zhuo Sun
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Electron Emission ◽  
Screen Printing ◽  
Weight Ratio ◽  
Hybrid Films ◽  
Vacuum Filtration ◽  
Emission Properties ◽  
Field Emission Properties ◽  
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The graphene double-walled carbon nanotube (DWCNT) hybrid films were prepared by vacuum filtration and screen printing. Their electron field emission properties have been studied systematically. The electron emission properties of the hybrid films are much better than those of pure DWCNT films and pure graphene films. Comparing with the screen printed films, the vacuum filtered films have many advantages, such as lower turn-on field, higher emission current density, better uniformity, better long-term stability, and stronger adhesive strength with conductive substrates. The optimized hybrid films with 20% weight ratio of graphene, which were fabricated by vacuum filtration, show the best electron emission performances with a low turn-on field of 0.50 Vμm−1(at 1 μAcm−2) and a high field enhancement factorβof 27000.

The synthesis of vertically oriented carbon nanosheet–carbon nanotube hybrid films and their excellent field emission properties

Carbon ◽  
2013 ◽  
Vol 58 ◽  
pp. 170-174 ◽  
Author(s):  
Xiao-Ping Wang ◽  
Li-Jun Wang ◽  
Xiao-Fei Liu ◽  
Can Yang ◽  
Long-Wei Jing ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Hybrid Films ◽  
Emission Properties ◽  
Field Emission Properties

Effect of geometrical parameters on the field-emission properties of single-walled carbon nanotube ropes

2003 ◽  
Vol 18 (9) ◽  
pp. 2188-2193 ◽  
Author(s):  
Z. G. Zhao ◽  
Y. Tong ◽  
C. Liu ◽  
H. M. Cheng
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Threshold Field ◽  
Geometrical Parameters ◽  
Cross Sectional ◽  
Single Walled Carbon Nanotube ◽  
Emission Properties ◽  
Single Walled Carbon ◽  
Field Emission Properties ◽  
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Aligned single-walled carbon nanotube (SWNT) ropes show excellent field-emission performance due to their high aspect ratio and sound alignment. In this study, the effect of geometrical parameters, such as cathode-anode distance and the height of SWNT ropes on the field-emission properties of SWNT ropes was investigated. It was found that the cathode-anode distance influences the emission properties, such as the turn-on field Fto and threshold field Fthr, of SWNT ropes, and the turn-on and threshold fields are marginally decreased at relatively larger gaps between the SWNT emitter tip and the anode plane. It was also found that the emission properties of SWNT ropes are improved by increasing the rope length, at least in the present experimental range. A possible two-step field amplification model was proposed to explain this length effect of SWNT ropes. The estimated results show that the local field at the tip of SWNT ropes, which causes a certain emission-current density, seems not to change with the cathode-anode distance, and the effective emission area of the SWNT rope is much smaller than the apparent cross-sectional area of the SWNT rope. The results obtained suggest that it is possible to optimize the performance of SWNT rope-based cold cathode by adjusting geometrical parameters of SWNT rope emitters.

Enhanced Field Emission Properties of Carbon Nanotube Based Field Emitters by Dynamic Oxidation

2013 ◽  
Vol 9 (5) ◽  
pp. 619-623 ◽  
Author(s):  
Shama Parveen ◽  
Samina Husain ◽  
Avshish Kumar ◽  
Javid Ali ◽  
Mubashshir Husain ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Field Emitters ◽  
Dynamic Oxidation

scholarly journals Investigation of field emission properties of carbon nanotube arrays defined using nanoimprint lithography

2006 ◽  
Vol 89 (2) ◽  
pp. 022111 ◽  
Author(s):  
Sara M. C. Vieira ◽  
Kenneth B. K. Teo ◽  
William I. Milne ◽  
Oliver Gröning ◽  
Laurent Gangloff ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Nanoimprint Lithography ◽  
Nanotube Arrays ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Carbon Nanotube Arrays
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