ヴァン・デル・ワールスの金属半導体結合におけるショットキー・モットの限界に近づく
Yuan Liu1,2, Jian Guo1, Enbo Zhu1
1Department of Materials Science and Engineering, University of California, Los Angeles, CA, USA.
Nature
|May 18, 2018
まとめ
研究者らは,ヴァン・ダー・ワールズのレイヤリングを用いて理想的な金属半導体結合を作り,トランジスタにおける高電荷キャリアの移動性を達成し,高度な電子機器のための調整可能なショットキー・バリアを実証した.
科学分野:
- 材料科学
- 凝縮物質物理学
- ナノテクノロジー
背景:
- 金属半導体結合は電子機器にとって不可欠ですが,理想的な動作はインタフェースの障害によって妨げられます.
- ショットキー・バリアの高さは,理想的には,ショットキー・モットルによる金属半導体作業機能に依存する.
- 既存のインターフェースは 化学的障害とフェルミレベルのピニングに苦しんでおり 理想的な性能を阻害しています
研究 の 目的:
- 理想的なヴァン・デル・ワールスの金属半導体結合の作成と特徴付け
- インターフェースの障害のない調節可能なショットキーバリアの高さを実証する.
- この新しいインターフェース戦略を使用して高性能トランジスタと光ダイオードを実現します.
主な方法:
- ヴァン・デル・ワールスのヘテロ構造は,2次元半導体に原子的に平らな金属フィルムをレイニングすることによって製造される.
- 銀とプラチナの薄膜を使用し,特定の作業機能を持っています.
- 充電媒体の移動性と光ダイオード特性を含む装置の性能の特徴
主要な成果:
- 化学的混乱とフェルミレベルのピニングのない金属半導体インターフェースを達成しました.
- スコットキー・バリアの高さは,スコットキー・モットの限界に近づいており,金属加工機能で調節できます.
- 高室温電子 (260 cm2/Vs) と穴 (175 cm2/Vs) の移動性を有する製造されたトランジスタ.
- 1.02Vのオープン回路電圧を持つシルバー/モリブデン硫化物/プラチナ光ダイオードを開発した.
結論:
- この研究は,理想的な金属半導体結合の基本的限界を検証しています.
- ヴァン・デル・ワールスの統合は,金属を組み込むための無害で非常に効率的な戦略を提供します.
- このアプローチにより,高性能の電子機器と光電子機器が実現できます.
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