垂直のMoS2トランジスタ,ゲートの長さは1nm以下
Fan Wu1,2, He Tian3,4, Yang Shen1,2
1School of Integrated Circuits, Tsinghua University, Beijing, China.
Nature
|March 10, 2022
まとめ
研究者らはモリブデンジスルファイド (MoS2) とグラフェンを用いて超スケールトランジスタを開発し,1ナノメートル未満のゲート長さを達成した. この突破は電子機器の小型化を促進し ムーアの法則を拡張する可能性があります
科学分野:
- 材料科学
- ナノテクノロジー
- 固体物理学
背景:
- 超スケールトランジスタは 次世代の電子機器に不可欠です
- モリブデンジスルファイド (MoS2) のような原子薄い材料を使用してゲート長が1ナノメートル未満のトランジスタを製造することは依然として大きな課題です.
研究 の 目的:
- サイドウォールのMoS2トランジスタを1 nm未満のゲート長で実証する.
- 超スケールトランジスタのゲート電極としてグラフェンのエッジを使用します.
主な方法:
- 横壁のMoS2トランジスタの製造には,大面積のグラフェンと化学的蒸気堆積で培ったMoS2フィルムを使用する.
- 拡張可能なデバイスの製造のための2インチのワッフルにこれらの材料を統合します.
主要な成果:
- 側面壁のMoS2トランジスタは,原子的に薄いチャネルと物理ゲート長が1 nm未満であることが実証されています.
- 高いオン/オフ比 (最大1.02 × 10^5) と低いサブスリーフスイング (117 mV dec^-1まで) を達成した.
- シミュレーションでは,有効なチャネル長が0. 34 nm (オン状態) と4. 54 nm (オフ状態) に近づいていることが示されました.
結論:
- この新しいアプローチにより 将来の電子機器に不可欠な超スケールトランジスタが作れます
- 実証された技術は,トランジスタの継続的なスケーリングに大きく貢献し,ムーアの法則を拡張する可能性があります.
関連する概念動画
Characteristics of MOSFET
531
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...
531
MOSFET: Enhancement Mode
510
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...
510
MOSFET
624
The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) plays a pivotal role in modern electronics thanks to its versatility and efficiency in controlling electrical currents. This device, also known as IGFET, MISFET, and MOSFET, has three main terminals: the Source, Drain, and Gate. MOSFETs are classified into n-channel or p-channel types based on the doping characteristics of their substrate and the source or drain regions.
In an n-MOSFET, the structure includes n-type source and drain...
In an n-MOSFET, the structure includes n-type source and drain...
624
MOSFET: Depletion Mode
498
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...
498
MOS Capacitor
1.0K
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
1.0K
MOSFET Amplifiers
229
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
229


