Influence of polarity reversal on interfacial charge formation in multilayer dielectric insulation

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics Pub Date : 2025-01-03 DOI:10.1016/j.elstat.2024.104015

Fatiha Rogti

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引用次数: 0

Abstract

In this paper, the effect of the polarity on the formation of the interfacial charge between two dielectrics has been investigated. A sandwich structure constituted by two dielectric films Polyethylene (LDPE) and Fluorinated Ethylene Propylene (FEP) was subjected to high DC electric field, and the measurement were performed in case of polarization and depolarization. For reversed polarity effect, the experimental results show that the space charge profiles measured at different voltage polarities are not symmetrical, in particular, has observed the following behavior in dielectric interface configuration Cathode (Al)/LDPE/FEP/Anode (SC) under a positive polarity: negative charge accumulates at the dielectric interface LDPE/FEP.

The anode configuration (Al)/LDPE/FEP/Cathode (SC) under a negative polaritys: a positive charge accumulates at the dielectric interface LDPE/FEP.

For the same dielectric inversion of polarization does not give the same amount of interfacial charge, because the quantities of positive interfacial charges (holes) and negative (electrons) depend on the injection electrode (Al). The existence of the interfacial charge is positive or negative.

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来源期刊

Journal of Electrostatics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

11.10%

发文量

审稿时长

49 days

期刊介绍： The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.