The enhanced field-emission properties of screen-printed single-wall carbon-nanotube film by electrostatic field

Shang, Xuefu; Zhou, Jiahui; Zhao, Pei; Li, Z.H.; Qu, Shaoxing; Gu, Zhiqi; Xu, Yanqiao; Wang, Mengcen

doi:10.1016/j.apsusc.2009.09.036

Cited by 11 publications

(2 citation statements)

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“…Figure 5 a shows the J-E curves of the screen printed and the electrophoretic SWCNT cathodes. The turn-on field ( E on ) and threshold field ( E th ) of the screen-printed SWCNT cathodes are 0.9 V/μm and 1.5 V/μm, which is lower than many other reported screen-printed SWCNT cathodes [ 21 , 32 ]. This is due to the screen-printed silver paste buffer layer, which makes more emission points exposed to the cathode surface.…”

Section: Resultsmentioning

confidence: 73%

“…The cold cathode prepared by screen printing has the advantages of low cost, large preparation area, and is suitable for large-scale fabrication [ 20 ]. It firmly binds CNTs with the substrate [ 21 ], which can effectively reduce the contact resistance and increase the maximum emission current. The general screen printing method is to fully mix CNTs with organic slurry and then print on the clean substrate and form the cathode for one step.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Field Emission of Single-Wall Carbon Nanotube Cathode Prepared by Screen Printing with a Silver Paste Buffer Layer

et al. 2022

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A high emission current with relatively low operating voltage is critical for field emission cathodes in vacuum electronic devices (VEDs). This paper studied the field emission performance of single-wall carbon nanotube (SWCNT) cold cathodes prepared by screen printing with a silver paste buffer layer. The buffer layer can both enforce the adhesion between the SWCNTs and substrate, and decrease their contact resistance, so as to increase emission current. Compared with paste mixing CNTs and screen printed cathodes, the buffer layer can avoid excessive wrapping of CNTs in the silver slurry and increase effective emission area to reduce the operating voltage. The experimental results show that the turn-on field of the screen-printed SWCNT cathodes is 0.9 V/μm, which is lower than that of electrophoretic SWCNT cathodes at 2.0 V/μm. Meanwhile, the maximum emission current of the screen-printed SWCNT cathodes reaches 5.55 mA at DC mode and reaches 10.4 mA at pulse mode, which is an order magnitude higher than that of electrophoretic SWCNTs emitters. This study also shows the application insight of small or medium-power VEDs.

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Section: Resultsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%