エネルギー効率の高い電子スイッチとしてのディラック源フィールド効果トランジスタ
Chenguang Qiu1, Fei Liu2, Lin Xu1
1Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, China.
まとめ
研究者らは,電子機器の電力消費を大幅に削減するグラフェン・ディラック源フィールド効果トランジスタ (DS-FET) を開発した. この新しいトランジスタは60mV/10年未満のスイッチを達成し,従来のトランジスタの主要な制限を克服します.
科学分野:
- 材料科学
- 半導体物理学
- ナノ電子
背景:
- 電子機器の電力消費を減らすことは極めて重要です.
- フィールド・エフェクト・トランジスタ (FET) は,熱電界限による60mV/十年のサブスリーホールド・スイング (SS) によって制限されます.
- 電源の電圧を下げることは,電力を減らすための鍵ですが,SSはこれを制限します.
研究 の 目的:
- FETにおける10年分の60mVのスイング制限を克服する.
- 電力を消費する新型のトランジスタを 試すためだ
- トランジスタ性能の改善のためのグラフェン・ディラック源の利用を調査する.
主な方法:
- グラフェンディラク源フィールド効果トランジスタ (DS-FET) の製造.
- DS-FETアーキテクチャ内のカーボンナノチューブチャネルを使用した.
- 室温下でのサブスレッジスイング (SS) と電流レベルを含む装置の性能の特徴.
主要な成果:
- 40mV/十年の平均電流を達成した.
- 60mV/十年で証明された高い装置電流 (マイクロメートルあたりI60〜40マイクロアンペア).
- 最先端のシリコンFETと同様のオンステート電流を実現したが,供給電圧は低かった (0.5V対0.7V).
- シリコンFETと比較して35mV/10年未満の偏斜SSを観測した.
結論:
- グラフェン・ディラク・ソースのFETは,動作電圧と電力消費を大幅に低減するための実行可能な経路を提供します.
- DS-FETの設計は,従来のSSの限界を超えて,よりエネルギー効率の良い電子機器を可能にします.
- この技術は,次世代の低電力機器のシリコンFETの有望な代替手段となります.
関連する概念動画
Field Effect Transistor
1.2K
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...
1.2K
Sources of Self-Esteem II: Performance Feedback
194
Self-esteem is intricately tied to our perception of competence and our ability to exert control over our lives. One of the primary sources of this perception is performance feedback — the ongoing evaluation of our actions in terms of success and failure. According to Franks and Marolla (1976), people derive self-worth from experiencing themselves as causal agents, capable of achieving goals and overcoming obstacles. This process nurtures a critical component of self-esteem:...
194
Energy In A Magnetic Field
2.8K
If a magnetic field is sustained, there must be a current in a closed circuit or loop, implying some energy has been spent in creating the field. If this energy is not dissipated via the circuit's resistance, it is stored in the field.
Take an ideal inductor with zero resistance. Although it's practically impossible, assume that the coil's resistance is so small that it is practically negligible. The loss of the field's energy to dissipate thermal energy (or heat) is thus...
Take an ideal inductor with zero resistance. Although it's practically impossible, assume that the coil's resistance is so small that it is practically negligible. The loss of the field's energy to dissipate thermal energy (or heat) is thus...
2.8K
Switching of BJT
867
Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
867
Ionization Energy
43.5K
The amount of energy required to remove the most loosely bound electron from a gaseous atom in its ground state is called its first ionization energy (IE1). The first ionization energy for an element, X, is the energy required to form a cation with 1+ charge:
43.5K
Electron Carriers
92.0K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
92.0K


