Title: Emission Efficiency Dependence on the Tilted Angle of Nanogaps in Surface Conduction Electron-Emitter
Authors: Li, Yiming
Kuo, Yi-Ting
Cheng, Hui-Wen
Yeh, Ta-Ching
Lo, Hsiang-Yu
Chiang, Mei-Tsao
Mo, Chi-Neng
電信工程研究所
Institute of Communications Engineering
Keywords: Nanogap;Surface Conduction Electron-Emitter;Emission Efficiency;Maxwell Equation;Fowler-Nordheim Equation;FDTD;Particle-in-Cell;Emitted Current;Collected Current by Anode
Issue Date: 2008
Abstract: In this work, the emission efficiency of the novel surface conduction electron-emitter corresponding to tilted angles (0) of the driving electrode is studied numerically. Due to the small angle, the emitter apex becomes significant and induces large electric field. The large electric field then attracts more particles into vacuum and then increases the emission current. However, the structure of the driving electrode limits the electron trajectory while the angle decreases, and it reflects the portion of collected current by the anode decreases and makes a drop in emission efficiency. It shows there is the highest emission efficiency (about 37%) under an optimum angle theta = 60 degrees. The result provides an insight into the relation between emission efficiency and emitter apex.
URI: http://hdl.handle.net/11536/1330
ISBN: 978-1-4244-1753-7
Journal: SISPAD: 2008 INTERNATIONAL CONFERENCE ON SIMULATION OF SEMICONDUCTOR PROCESSES AND DEVICES
Begin Page: 205
End Page: 208
Appears in Collections:Conferences Paper