Emission efficiency dependence on the width and thickness of nanogaps in surface-conduction electron-emitter displays

Ylming Li*, Hsiang Yu Lo

*Corresponding author for this work

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

In this work, we explore the optimal size of nanogaps for the high field emission (FE) efficiency. In the FE process, the emission current is highly dependent upon both the material properties and the shape of the emitter. Thus, we first calibrate the theoretical model with the experimental data using the numerical simulation which is developed to evaluate the FE efficiency under different conditions. A three-dimensional finite-difference time-domain particle-in-cell method which approaches to self- consistent simulation of the electromagnetic fields and charged particles is adopted to simulate the electron emission in the surface-conduction electron-emitter display (SED) device. Examinations into conducting characteristics, FE efficiency, local electric fields around the emitter, and current density on the anode plate with one surface conduction electron-emitter (SCE) are conducted. It is found that the optimal width of nanogap in the SCE is about 80'-'90 nm and optimal thickness of the emitter is 30 nm to obtain the highest FE efficiency. This study benefits the advanced SED design for a new type of electron sources.

原文English
頁(從 - 到)3271-3277
頁數7
期刊Journal of Nanoscience and Nanotechnology
9
發行號5
DOIs
出版狀態Published - 五月 2009

指紋 深入研究「Emission efficiency dependence on the width and thickness of nanogaps in surface-conduction electron-emitter displays」主題。共同形成了獨特的指紋。

引用此