蒙特卡罗模拟中载流子-载流子散射的一种简单有效的计算方法

2010 International Conference on Simulation of Semiconductor Processes and Devices Pub Date : 2010-09-01 DOI:10.1109/SISPAD.2010.5604550

Wonsok Lee, Umberto Ravaioli

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引用次数: 1

摘要

载流子-载流子散射的分析越来越重要，可以采用粒子-粒子-粒子网格(P3M)算法进行分析。该算法的一个问题是避免在短距离内重复计算成对力。在这里，我们通过在算法中引入一种有效的数值方法来解决这个问题。通过各种测试用例验证了该方法在准确性和适用性方面的改进。此外，将改进的P3M方法与三维集成蒙特卡罗(EMC)模拟器集成，并应用于器件仿真。将结果与粒子网格-电磁兼容方法进行了比较，揭示了基于散射率方法的局限性以及P3M方法在处理载流子相互作用方面的重要性。

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A simple and efficient method for the calculation of carrier-carrier scattering in Monte-Carlo simulations

The analysis of the carrier-carrier scattering is getting more important and it can be done by the particle-particle-particle-mesh (P3M) algorithm. A problematic part of the algorithm is to avoid double-counting of the pair forces in short-range. Here, we solve the problem by introducing an efficient numerical method to the algorithm. The improvements in accuracy and applicability are confirmed with various test cases. In addition, the modified P3M method is integrated with a 3D ensemble Monte Carlo (EMC) simulator and applied to the device simulations. The results are compared with those of the PM (particle-mesh)-EMC approach, which reveals the limitations of the scattering rate based methods and the importance of the P3M method to treat carrier interactions.

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2010 International Conference on Simulation of Semiconductor Processes and Devices

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