アセチレンとメチラセチレン機能がSi(111) 表面に共性的に結合する:Si(111) 表面部位のSi-C受容性を保持しながら,有機的表面機能化のための支架
Patrick T Hurley1, E Joseph Nemanick, Bruce S Brunschwig
1Division of Chemistry and Chemical Engineering, 127-72, California Institute of Technology, Pasadena, California 91125, USA.
Journal of the American Chemical Society
|August 3, 2006
まとめ
Si-CC-R種でシリコン表面を機能化すると,安定した炭素末端の材料が生成されます. これらの表面は酸化に抵抗し,さらに改良され,望ましい化学的および電気的性質を保持することができます.
科学分野:
- マテリアルサイエンス 材料科学
- 表面化学について
- ナノテクノロジー ナノテクノロジー
背景:
- シリコン (Si) 表面は,電子工学において極めて重要です.
- 表面の端末を制御することは,デバイスの性能の鍵です.
- Si表面の機能化のための既存の方法には限界があります.
研究 の 目的:
- Si{111) 表面の機能化のための堅牢な方法を開発する.
- 安定したシリコン-炭素結合をSi111上に作る.
- これらの機能化された表面のさらなる改変を探求する.
主な方法:
- 2段階の反応:H-Si(111) を塩素化し,その後にナトリウム器官反応剤 (Na-CC-H または CH3-CC-Na) と反応する.
- X線光電子スペクトロスコーピー (XPS) と赤外線 (IR) スペクトロスコーピーを用いた特徴付け.
- 酸化抵抗を評価するための電気化学測定.
主要な成果:
- Si-CC-R (R=H,CH3) 種でSi(111) の機能化が成功しました.
- 機能化された表面の検出可能な酸化はありません.
- IRスペクトロスコーピーの特徴的な,極化CCの伸びの観測.
- XPS.を介してSi-C結合の確認.
- 表面特性を維持しながら,アリル群によるさらなる機能化の実証.
結論:
- 開発された方法は,安定した,炭素末端のSi111) 表面を提供します.
- これらの表面は,酸化に対する優れた耐性を示しています.
- 機能化された表面は,Si-C端末を保持しながら,高度なアプリケーションのためにさらに変更することができます.
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