Title :
Enhanced field emission density current of a planar triode structure with double cathodes
Author :
Zheng, Linhu ; Zhu, Zhuoya ; Lei, Wei ; Zhang, Xiaobing ; Feng, Huan ; Sun, Yajun ; Hu, Zheng
Author_Institution :
Sch. of Electron. Sci. & Eng., Southeast Univ., Nanjing, China
Abstract :
Field emission properties of a planar triode structure with double cathodes have been investigated. ZnO nanotetrapod emitters mixed with carbon nanotubes(CNTs) were fabricated by the screen-printing method. The potential distribution, electron trajectoryies distribution and current density distribution were simulated in detail with CST PARTICLE STUDIO code. A higher field emission density current was obtained in the double-cathode structure. We found the gate played an important role in the anode current enhancement by focusing effect.
Keywords :
II-VI semiconductors; anodes; carbon nanotubes; cathodes; current density; current distribution; electron density; field emission; focusing; triodes; wide band gap semiconductors; zinc compounds; CNT; CST PARTICLE STUDIO code; ZnO; anode current enhancement; carbon nanotubes; current density distribution; double-cathode structure; electron trajectory distribution; enhanced field emission density current; field emission properties; focusing effect; nanotetrapod emitters; planar triode structure; potential distribution; screen-printing method; Anodes; Cathodes; Electric potential; Focusing; Logic gates; Trajectory; Zinc oxide; CNTs; ZnO; field emission; focusing effect;
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2012 IEEE Ninth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0368-2
DOI :
10.1109/IVESC.2012.6264193
