Field emission properties of patterned carbon nanotube cathodes prepared by cold-pressing method

被引：0
|
作者：
Xia, Ao [1 ]
Liu, Yunpeng [1 ,2 ]
Lai, Sheng [1 ]
Wang, Kang [1 ]
Wang, Xiushan [1 ]
Yu, Hao [1 ]
Tang, Xiaobin [1 ,2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Dept Nucl Sci & Technol, Nanjing 210016, Peoples R China
[2] Minist Ind & Informat Technol, Key Lab Adv Nucl Technol & Radiat Protect, Nanjing 210016, Peoples R China
来源：
DIAMOND AND RELATED MATERIALS | 2025年 / 153卷
基金：
中国国家自然科学基金;
关键词：
Field emission; Cold-pressing method; Patterned cathode; Carbon nanotube; FABRICATION;
D O I：
10.1016/j.diamond.2025.112059
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A method of preparing a patterned carbon nanotube (CNT) cathode via a cold-pressing method is used in this study. The patterned cathode exhibited a low turn-on field strength and no significant deterioration in electron emission property, and the effects of different cold-press pressures on the field emission property of the patterned cathode were studied. Experimental results showed that when the cold-press pressure is 50 MPa, the patterned cathode has excellent field emission properties with a current fluctuation of 3.19 % (initial current density of 1.5 mA/cm2), a low turn-on field of 0.77 V/mu m, and an emission current density of 9.45 mA/cm2 at an electric field of 2.17 V/mu m. This study provides a feasible technical route for the low-cost and high-efficiency production of patterned cathode, which has broad application prospects.
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页数：6
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