Title of article :
Study of Charge Dynamic and Breakdown Phenomenon in Insulating Materials Using a Bipolar Charge Transport Model
Author/Authors :
Boukhris, Imed Department of Physics - Faculty of Science - King Khalid University - Abha, Saudi Arabia , Kebaili, Imen Department of Physics - Faculty of Science - King Khalid University - Abha, Saudi Arabia , Belgaroui, Ezzeddine Laboratoire des matériaux composites céramiques et polymères (LaMaCoP) Faculté des sciences de Sfax Tunisie , Kallel, Ali Laboratoire des matériaux composites céramiques et polymères (LaMaCoP) Faculté des sciences de Sfax Tunisie , Znaidia, Sami Faculte des sciences de Monastir - Universte de Monastir, Tunisia
Abstract :
In insulating materials, the accumulation of space charge is regarded as the main source of dielectric breakdown, which depends on their electrical lifetime. Within this work, a bipolar transport charge model is presented to study the phenomenon of electrical breakdown in low density polyethylene used for electrical insulation. Therefore, the sample thickness effect is observed on the charge dynamic and particular interest in the external current density is developed in the dielectric breakdown of the insulator, as a first witness. Distribution of the electric field is displayed by model results besides the net charge density in the insulator before and during the breakdown phenomenon. In fact, these distributions are highly related to the development of the external current density which reflects the breakdown phenomenon.
Keywords :
Model , Insulator , Space charge , Sample thickness , Breakdown , Electrical lifetime
Journal title :
Journal of Advanced Materials and Processing