Page 21 - 《真空与低温》2025年第3期
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真空与低温 第 31 卷 第 3 期
292 Vacuum and Cryogenics 2025 年 5 月
背 栅 型 纳 米 真 空 沟 道 晶 体 管 阵 列 的 电 学 特 性 及 其 高 频
小 信 号 等 效 电 路 模 型 研 究
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陈越中 ,赵浩东 ,俞道龙 ,刘志霞 ,汪正义 ,王雨薇 ,徐 季 3*
(1. 南京信息工程大学 电子与信息工程学院,南京 210000;2. 湖南大学
电气与信息工程学院,长沙 410082;3. 南京信息工程大学 集成电路学院,南京 210000)
摘要:在后摩尔时代,传统固态电子器件面临着由于尺寸压缩而触及物理极限的挑战。而与固态器件工作机
制截然不同的纳米真空沟道晶体管(NVCTs),成为新一代最具潜力的电子器件之一,其低功耗、高可靠性的特性,
引起了研究者的广泛关注。由于单阴极结构的 NVCTs 通常表现出较小的工作电流,将其扩展为阵列结构是一种
有效提高工作电流的方式。本文基于背栅型晶体管结构设计,提出了一种背栅型纳米真空沟道晶体管阵列,并深
入研究了其电学特性;具体探讨了阴极阵列中发射尖端间距对发射特性的影响,以及栅极介质层厚度和材料(特
别是高 k 材料)等潜在因素对其电学特性的影响。并提出了两种基于纳米真空沟道晶体管阵列的高频小信号等
效电路模型:共阴极高频小信号等效电路和共栅极高频小信号等效电路。这些研究为纳米真空沟道晶体管在新
一代电子器件中的应用提供了新的思路和参考。
关键词:纳米真空沟道晶体管;电学特性;高频小信号等效电路
中图分类号:TB71 文献标志码:A 文章编号:1006−7086(2025)03−0292−10
DOI:10.12446/j.issn.1006-7086.2025.03.002
Electrical Characteristics and High-frequency Small-signal Equivalent Circuit Model of Back-gated
Nanoscale Vacuum Channel Transistor Arrays
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CHEN Yuezhong ,ZHAO Haodong ,YU Daolong ,LIU Zhixia ,WANG Zhengyi ,WANG Yuwei ,XU Ji 3*
(1. School of Electronics and Information Engineering,Nanjing University of Information Science and Technology,
Nanjing 210000,China;2. College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;
3. School of Integrated Circuits,Nanjing University of Information Science and Technology,Nanjing 210000,China)
Abstract:In the post-Moore era,traditional solid-state electronic devices face the challenge of reaching physical limits
due to size reduction. In contrast,nanoscale vacuum channel transistors (NVCTs),which operate based on a mechanism fun-
damentally different from that of solid-state devices,have emerged as one of the most promising electronic devices for the
next generation. Their low power consumption and high reliability have attracted significant attention from researchers. How-
ever,NVCTs with a single cathode structure typically demonstrate low operating currents,and extending them into an array
structure has been identified as an effective method for enhancing the operating current. Based on a back-gate transistor struc-
ture,a back-gate nanoscale vacuum channel transistor array is proposed in this study,and its electrical characteristics are sys-
tematically investigated through parametric optimization. The systematic investigation focuses on three critical design para-
meters governing device performance:Firstly,emission tip spacing within cathode arrays is optimized to minimize the elec-
tric field shielding effect. Secondly,gate dielectric layer thickness is correlated with electrostatic control performance,reveal-
ing thickness-dependent performance tradeoffs. Thirdly, the effect of High-k dielectric materials applied to our proposed
收稿日期:2024−12−10
基金项目:国家自然科学基金 (92264103,62401399);国家重点研发计划课题 (2022YFB4401301)
作者简介:陈越中,硕士研究生。E-mail:202312180040@nuist.edu.cn
赵浩东,硕士研究生,本文共同第一作者。E-mail:202412492717@nuist.edu.cn
通信作者:王雨薇,博士,副教授。E-mail:yuweiwang@hnu.edu.cn
徐季,博士,副教授。E-mail:003397@nuist.edu.cn