How important is the interfacial chemical bond for electron transport through alkyl chain monolayers?
How important is the interfacial chemical bond for electron transport through alkyl chain monolayers?
复制标题
界面化学键对于通过烷基链单层进行电子传输有多重要？
DOI：
10.1021/nl062089y
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发表时间：
2006
期刊：
影响因子：
10.8
通讯作者：
D. Cahen
中科院分区：
文献类型：
--
作者：
A. Salomon;T. Böcking;J. Gooding;D. Cahen
我们发现，电极/分子化学键并不改变通过夹在硅和汞电极之间的烷基链单分子层进行电荷传输的隧道势垒。如果界面键主要控制单分子层的结构，而分子-电极键产生的电子态对隧道效应没有显著贡献，则可以理解这种观察结果。然而，由于界面偶极子的变化，键的性质影响半导体内部的肖特基势垒。
We show that the electrode/molecule chemical bond does not change the tunneling barrier for charge transport through alkyl chain monolayers sandwiched 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 affects the Schottky barrier inside the semiconductor due to changes in the interface dipole.