How Important Is the Interfacial Chemical Bond for Electron Transport through Alkyl Chain Monolayers?

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• 作者：Adi Salomon ; Till Bö ; cking ; J. Justin Gooding ; David Cahen
• 刊名：Nano Letters
• 出版年：2006
• 出版时间：December 2006
• 年：2006
• 卷：6
• 期：12
• 页码：2873 - 2876
• 全文大小：466K
• 年卷期：v.6,no.12(December 2006)
• ISSN：1530-6992

文摘

We show that the electrode/molecule chemical bond does not change the tunneling barrier for charge transport through alkyl chain monolayerssandwiched between Si and Hg electrodes. This observation can be understood if the interfacial bond mainly governs the monolayer's structure,while the electronic states due to molecule-electrode bonding do not contribute significantly to tunneling. Yet, the nature of the bond affectsthe Schottky barrier inside the semiconductor due to changes in the interface dipole.