Title :
Numerical model for studying dynamic space charge behavior in polyethylene
Author :
Le Roy, S. ; Teyssedre, G. ; Laurent, C. ; Segur, P.
Author_Institution :
Inst. de Genie Electrique, Electron et Plasmas, Univ. Paul Sabatier, Toulouse, France
Abstract :
A model providing time-dependent solutions for charge densities, field and electroluminescence in low density polyethylene (LDPE) films under uniform dc field has been recently proposed. It was developed to simulate experimental results that support the hypothesis of a charging controlled by injection and transport of electronic (as opposed to ionic) carriers. The model includes therefore bi-polar carrier production, trapping and recombination. The influence on the numerical results of the most critical model parameters are considered in this communication.
Keywords :
current density; dielectric materials; dielectric thin films; electroluminescence; electron density; electron mobility; electron traps; hole density; hole mobility; hole traps; polymer films; space charge; LDPE; bipolar carrier production; carrier recombination; carrier trapping; charge density; charge field; dc field; dynamic space charge behavior; electroluminescence; electronic carrier injection; electronic carrier transport; electronic carriers; low density polyethylene films; numerical model; time-dependent solution; Electrodes; Electron mobility; Electron traps; Numerical models; Permittivity; Plasma density; Plasma simulation; Polyethylene; Space charge; Spontaneous emission;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on
Print_ISBN :
0-7803-7725-7
DOI :
10.1109/ICPADM.2003.1218557
