Numerical Model for Assessing the Impact of AC Ripple Voltage on the Space Charge Accumulation Inside Solid Thin Film Samples
Numerical Model for Assessing the Impact of AC Ripple Voltage on the Space Charge Accumulation Inside Solid Thin Film Samples
复制标题
用于评估交流纹波电压对固体薄膜样品内部空间电荷积累影响的数值模型
DOI：
--
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
L. Dissado
中科院分区：
文献类型：
--
作者：
A. A. Mulla;S. Dodd;N. Chalashkanov;L. Dissado
建立了一个数值模型，研究了叠加在直流电压上的交流涟漪对单层固体聚合物薄膜内空间电荷积累的影响。空间电荷的模拟是基于非线性的、电场依赖的、非极性的电荷传输模型，该模型具有绝缘材料内的同电荷和异电荷积累的附加规定。计算了三种不同情况下的空间电荷积累和电场分布。在第一种情况下，施加的电压是纯DC，而在第二种和第三种情况下，叠加的AC涟漪与DC电压电平的比率分别被选择为10%和20%。结果表明，交流涟漪导致样品内空间电荷积累增加。涟漪电压比越高，样品中积累的空间电荷量越大。
A numerical model is investigated to determine the effect of AC ripple superimposed on DC voltage on the space charge accumulation inside one layer solid thin film polymer. The simulation of space charge was based on a non-linear, electric field dependent, non-polar charge transport model with the additional provision for homocharge and hetero-charge accumulation within the insulating material. The space charge accumulation and electric field distribution were calculated for three different cases. In the first case, the applied voltage was pure DC, while in the second and third cases the ratio of the superimposed AC ripple to the DC voltage level was chosen to be 10% and 20%, respectively. The results show that the AC ripple led to increased accumulation of space charge within the sample. The higher ratio of ripple voltage resulted in greater amount of space charge accumulated in the sample.