Trap Property and Charge Transmission in PE

Trap Property and Charge Transmission in PE

DOI: 10.4018/978-1-5225-8885-6.ch005

Abstract

The electrical properties of the dielectric are achieved by affecting the charge transfer process. The trap characteristics have an important influence on the electrical properties of the dielectric by affecting the charge transfer process. Aggregation and trap level characteristics of nanographene on low density polyethylene (LDPE). The direct current conductivity, breakdown strength, trap level distribution, space charge distribution, and charge mobility of nanocomposites were investigated. The experimental results show that the interface region between graphene and polymer introduces many deep traps in the forbidden band of nanocomposites, which can reduce the trapping process of charge and inhibit the accumulation of space charge. This indicates that the addition of nanoscale graphene has a significant improvement in the electrical performance of high voltage DC cables, which will provide a reference for production and application.
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Charge Carrier Transport Modulated By Trap

In this study, LDPE was used as the polymer matrix. LDPE/graphene NCs with the filler content of 0, 0.005, 0.01, 0.1 and 0.5 wt% are prepared. The breakdown strength, conductivity, space charge behavior, and trap level distribution of the NC were measured. According these results, a schematic model is proposed to illustrate that charge carrier transport process modulated by trap, which further reveals the relationship between electrical properties and trap energy level distribution.

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