High field emission efficiency surface conduction electron emitters

Abstract

Two different surface conduction electron-emitter (SCE) structures with the nanogap of 90 nm wide fabricated by hydrogen embrittlement (HE) and focused ion beam techniques are simulated for the first time. We employ a threedimensional particle-in-cell method coupling with finitedifference time-domain scheme to simulate the property of electron emission in these SCEs. Our calibrated simulation predicts high emission efficiency of the SCE structure which is fabricated by HE. Compared with the other SCE structure, it is observed that the proposed structure possesses low power consumption at the fixed emission current when the width of nanogap becomes narrower. The current-voltage characteristics including conducting mechanisms are investigated and explained.

6.3: Enhancement of Field Emission on Surface Conduction Electron‐Emitters

“…To explore the electron-emission behaviors in SCEs, the FDTD-PIC simulation technique [16][17][18][19] is employed to solve a set of 3D Maxwell equations coupled with the Lorentz equation. Including the effect of space charge, this approach is a self-consistent simulation of the electromagnetic fields and charged particles.…”

“…For investigating the field emission properties in SCE, the FDTD-PIC [16][17][18][19] codes are implemented. Starting from a specified initial state, we simulate electrostatic fields as its evolution in time.…”

Numerical simulation of field emission efficiency of anodic aluminum oxide carbon nanotube field emitter in the triode structure

“…Fabrication of AAO-CNTs is using standard integrated circuit processes [9]. Finite-difference time domain (FDTD) particle-in-cell (PIC) numerical simulation is developed to examine the FE property [10,11] and current in the CNTs triode structure with the AAO template. The current is computed with the Fowler-Nordheim (FN) equation.…”

Field Emission Dependence on Nanogap Separation in Surface Conduction Electron-Emitter Display

“…Recently, a novel surface conduction electron-emitter display with palladium hydrogenation nanogaps, which is illustrated in Fig. 1(b), has been provided for the well properties of low turn-on voltage, high emission current, high focused capability, and high emission efficiency [7][8][9]. Those advantages above mainly come from the different structure from the nanogaps fabricated by focused ion beam.…”

“…In this work, we analyze the effect of gap width of the hydrogen embrittlement fabricated nanogap on the field emission efficiency of the desired SCE device using a threedimensional (3D) particle-in-cell method coupling with finitedifference time domain scheme (FDTD-PIC) [7][8][9]. The simulated result shows when the gap width increases, the field emission efficiency grows, even the emission current decreases.…”