Simulation of Space Charge Dynamics in Low-Density Polyethylene Using the Gaussian Disorder Model
Simulation of Space Charge Dynamics in Low-Density Polyethylene Using the Gaussian Disorder Model
复制标题
使用高斯无序模型模拟低密度聚乙烯中的空间电荷动力学
DOI：
10.1109/tdei.2022.3168375
复制
发表时间：
2022
影响因子：
3.1
通讯作者：
and Kazunori Kadowaki
中科院分区：
文献类型：
--
作者：
Ryotaro Ozaki;Kazuya Takeda;Taichi Yano;Shinji Yudate;and Kazunori Kadowaki
低密度聚乙烯 (LDPE) 薄膜中的空间电荷动力学是使用基于高斯无序模型 (GDM) 的迁移率计算的，该模型通常用于描述无序材料中的跳跃传导。 GDM 在强位置紊乱下表现出负微分迁移率。在模拟中，当使用恒定迁移率模型时，注入电荷不会形成包状空间电荷，而当使用基于 GDM 的迁移率时，会出现包状空间电荷。使用 GDM 迁移率的模拟可以重现 LDPE 中空间电荷行为的时间和电压依赖性。计算的空间电荷、电场和电流密度分布与实验结果吻合良好。
Space charge dynamics in a low-density polyethylene (LDPE) film is calculated using mobility based on the Gaussian disorder model (GDM), which is commonly used to describe hopping conduction in disordered materials. The GDM exhibits a negative differential mobility under a strong positional disorder. In simulations, injected charges do not form packet-like space charges when using a constant mobility model, whereas packet-like space charges appear when using the mobility based on the GDM. The simulation using the GDM mobility can reproduce the time and voltage dependences of space charge behavior in LDPE. The calculated space charge, electric field, and current density profiles show good agreement with experimental results.