双结场效应晶体管与超低次值波动接近理论极限
Xinhao Chen1, Shasha Li2, Lingyu Zhu1
1School of Semiconductor Science and Technology, South China Normal University, Foshan ,Guangdong 528225, P. R. China.
ACS applied materials & interfaces
|April 29, 2024
概括
研究人员开发了一种使用二硫化物 (MoS2) 和 (Te) 纳米片的新型双连接晶体管. 这种范德瓦尔斯异质连接场效应晶体管 (vdWJFET) 在低功耗电子产品中实现了近乎理想的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术 纳米技术
背景情况:
- 金属氧化物半导体场效应晶体管 (MOSFET) 面临性能限制,原因是随着通道厚度的降低,接口散射.
- 范德瓦尔斯异质连接场效应晶体管 (vdWJFET) 通过使用二维半导体,避免复杂的门氧化物层,提供了一个解决方案.
研究的目的:
- 开发一种新的双连接VDWJFET,以克服单连接设备的局限性.
- 为了研究MoS2通道和Te纳米板门vdWJFET的性能特征.
- 为了实现低功耗应用的超低下值摆动和最小电流歇斯底里.
主要方法:
- 使用MoS2通道和Te纳米板门制造双连接VDWJFET.
- 该设备的电气特性,包括下值摆动 (SS),断电压 (Vp),电流歇斯底里,以及场效应移动性 (μ).
- 双连接VDWJFET与单连接VDWJFET的性能比较.
主要成果:
- 双连接的VDWJFET显示了SS的显著降低,从475.04到68.3mVdec-1,接近理论极限.
- 实现了0.75V的低断电压 (Vp) 和约10mV的最小电流歇斯底里.
- 获得了 36.43 cm2 V−1 s−1.1 的场效应移动性 (μ).
结论:
- 新的双连接VDWJFET设计显著提高了晶体管的性能,相比单连接对应器.
- 这种设备架构为实现具有理想的下值摆动和微不足道的hysteresis的晶体管提供了途径.
- 开发的vdWJFET具有推动低功耗电子应用的前景.
相关概念视频
01:21Characteristics of JFET
490
Junction Field Effect Transistors (JFETs) exhibit specific operational characteristics based on the relationship between the drain current (id) and the drain-source voltage (Vds), along with varying gate-source voltages (Vgs).
The core of a JFET's operation is controlling drain current by modulating the gate-source voltage. When the drain and gate voltage are set to zero, the JFET exhibits no net current flow, representing a state of equilibrium. The drain current increases linearly as the...
The core of a JFET's operation is controlling drain current by modulating the gate-source voltage. When the drain and gate voltage are set to zero, the JFET exhibits no net current flow, representing a state of equilibrium. The drain current increases linearly as the...
490
01:22Biasing of FET
267
Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the...
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the...
267
01:22MOSFET: Enhancement Mode
328
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
328
01:29Field Effect Transistor
399
Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
399
01:17Characteristics of MOSFET
372
Metal-oxide-semiconductor field-effect Transistors, or MOSFETs, play a critical role in electronic circuits. They are primarily utilized for amplifying and switching signals.
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable...
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable...
372
01:20MOSFET: Depletion Mode
348
Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
348