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arXiv 0812.2773cond-mat.mtrl-sci
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Si/SiO $_2$界面漏电流的第一性原理研究

First-Principles Study on Leakage Current through Si/SiO$_2$ Interface

Tomoya Ono

摘要:

采用第一性原理计算,对Si/SiO $_2$界面层结构缺陷与漏电流的关系进行了理论研究.我发现通过悬空键的界面的漏电流比没有任何缺陷的界面大530倍,这预计会导致介电击穿。悬空键的方向与氧化物作为绝缘体的性能密切相关。此外,还证明了用氢原子终止悬空键对减小漏电流是有效的。

英文摘要:

The relationship between the presence of defects at the stacking structure of the Si/SiO$_2$ interface and leakage current is theoretically studied by first-principles calculation. I found that the leakage current through the interface with dangling bonds is 530 times larger than that without any defects, which is expected to lead to dielectric breakdown. The direction of the dangling bonds is closely related to the performance of the oxide as an insulator. In addition, it is proved that the termination of the dangling bonds by hydrogen atoms is effective for reducing the leakage current.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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