1. Simulation of Space Charge Dynamics in Low-Density Polyethylene Using the Gaussian Disorder Model.
- Author
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Ozaki, Ryotaro, Takeda, Kazuya, Yano, Taichi, Yudate, Shinji, and Kadowaki, Kazunori
- Subjects
SPACE charge ,ORDER-disorder transitions ,HOPPING conduction ,ELECTRIC fields ,SPATIAL behavior ,LOW density polyethylene - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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