L. Zheng, Zhuoya Zhu, W. Lei, Xiaobing Zhang, Huan Feng, Yajun Sun, Zheng Hu
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Enhanced field emission density current of a planar triode structure with double cathodes
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.
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