用集合蒙特卡罗/分子动力学模拟研究了通道形状对载流子输运的影响

2011 International Conference on Simulation of Semiconductor Processes and Devices Pub Date : 2011-10-06 DOI:10.1109/SISPAD.2011.6035055

T. Kamioka, H. Imai, T. Watanabe, K. Ohmori, K. Shiraishi, Y. Kamakura

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引用次数: 1

摘要

采用集合蒙特卡罗-分子动力学方法研究了通道形状对纳米载流子输运的影响。通过对传统直流道中载流子输运规律的比较，模拟了从源侧到漏侧加宽的非对称河道中载流子输运规律。角状通道的电导比直线型通道的电导大，这是由于在角状通道中载流子迁移率增强的结果。这可归因于两个原因:准弹道载流子输运体制中特有的不对称通道的准直效应，以及由于通道加宽而抑制了载流子-载流子相互作用。

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Impact of channel shape on carrier transport investigated by ensemble monte carlo/molecular dynamics simulation

Effect of the channel shape on the nano-scale carrier transport is studied by using the ensemble Monte-Carlo - molecular dynamics method (EMC/MD). Carrier transport in hone-shaped asymmetric channels which widen from source to drain sides is simulated by comparing that in the conventional straight channels. The obtained conductance of the horn-shaped channels is larger than that of the straight channel, as a result of the enhancement of the carrier mobility in the hone-shaped channel. This can be attributed to two reasons: the collimation effect of the asymmetric channel peculiar in the quasi-ballistic carrier transport regime, and the suppression of carrier-carrier interaction due to widening of the channel.

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2011 International Conference on Simulation of Semiconductor Processes and Devices

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