参数优化的碳纳米管涂层冷阴极斯平特阵列

Parametrically Optimized Carbon Nanotube-Coated Cold Cathode Spindt Arrays.

作者信息

Yuan Xuesong, Cole Matthew T, Zhang Yu, Wu Jianqiang, Milne William I, Yan Yang

机构信息

School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.

Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK.

出版信息

Nanomaterials (Basel). 2017 Jan 12;7(1):13. doi: 10.3390/nano7010013.

DOI:10.3390/nano7010013

PMID:28336845

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5295203/

Abstract

Here, we investigate, through parametrically optimized macroscale simulations, the field electron emission from arrays of carbon nanotube (CNT)-coated Spindts towards the development of an emerging class of novel vacuum electron devices. The present study builds on empirical data gleaned from our recent experimental findings on the room temperature electron emission from large area CNT electron sources. We determine the field emission current of the present microstructures directly using particle in cell (PIC) software and present a new CNT cold cathode array variant which has been geometrically optimized to provide maximal emission current density, with current densities of up to 11.5 A/cm² at low operational electric fields of 5.0 V/μm.

摘要

在此，我们通过参数优化的宏观模拟，研究了碳纳米管（CNT）涂层Spindt阵列的场电子发射，以开发一类新型的真空电子器件。本研究基于我们最近关于大面积CNT电子源室温电子发射的实验结果所收集的经验数据。我们直接使用粒子模拟（PIC）软件确定了当前微结构的场发射电流，并提出了一种新的CNT冷阴极阵列变体，该变体在几何上经过优化，以提供最大发射电流密度，在5.0 V/μm的低工作电场下电流密度高达11.5 A/cm²。