Effects of bonding materials in screen-printing paste on the field-emission properties of carbon nanotube cathodes

Author(s):  
Heo-Young Shin ◽  
Won-Sub Chung ◽  
Kwang Ho Kim ◽  
Young-Rae Cho ◽  
Byoung-Chul Shin
2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Jinzhuo Xu ◽  
Tao Feng ◽  
Yiwei Chen ◽  
Zhuo Sun

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.


2013 ◽  
Vol 9 (5) ◽  
pp. 619-623 ◽  
Author(s):  
Shama Parveen ◽  
Samina Husain ◽  
Avshish Kumar ◽  
Javid Ali ◽  
Mubashshir Husain ◽  
...  

2006 ◽  
Vol 89 (2) ◽  
pp. 022111 ◽  
Author(s):  
Sara M. C. Vieira ◽  
Kenneth B. K. Teo ◽  
William I. Milne ◽  
Oliver Gröning ◽  
Laurent Gangloff ◽  
...  

2005 ◽  
Vol 44 (1A) ◽  
pp. 365-370 ◽  
Author(s):  
Chuan-Ping Juan ◽  
Kuo-Ji Chen ◽  
Chun-Chien Tsai ◽  
Kao-Chao Lin ◽  
Wei-Kai Hong ◽  
...  

2006 ◽  
Vol 17 (9) ◽  
pp. 2355-2361 ◽  
Author(s):  
Li Song ◽  
Lijie Ci ◽  
Chuanhong Jin ◽  
Pingheng Tan ◽  
Lianfeng Sun ◽  
...  

2002 ◽  
Vol 728 ◽  
Author(s):  
Mark Ching-Cheng Lin ◽  
M.S. Lai ◽  
H. J. Lai ◽  
M. H. Yang ◽  
B.Y. Wei ◽  
...  

AbstractThe field emission properties of carbon nanotubes (CNTs) from various sources are investigated for the application of field emission displays. Comparisons are made between graphite with Ni metal as catalyst and polycyclic aromatic hydrocarbon as precursor by the arc discharge method. Cathode deposits are examined using scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) to determine microstructure. Carbon structure is studied using Raman spectroscopy. Electron field emission characteristics are measured with the diode method at 10-6 torr pressure. In this study, SEM micrographs of cathode deposits show dense random fiber-like carbon nanotubes. The HRTEM images clearly exhibit characteristic features of multiwalled carbon nanotubes. Microstructural investigation provides evidence that both the metal catalyst and the precursor can be used to synthesize carbon nanotubes. The Raman spectrum shows a stronger peak at about 1580 cm-1 indicating formation of a well-graphitized carbon nanotube. The degree of carbon nanotube graphitization is high and is in good agreement with the HRTEM result. From field emission measurements, the lowest onset field is about 1.0 V/μm and can be attributed to highly sharp tips and the high density of carbon nanotubes. Based on microstructure characterization and field emission measurements, the influence on field emission properties including turn on voltage and threshold voltage of carbon nanotubes synthesized from different sources is discussed.


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