Characterisation of charge carrier traps in polymeric insulators

Author

Meunier, M. ; Quirke, N. ; Aslanides, A.

Author_Institution

Dept. of Chem., Imperial Coll. of Sci., Technol. & Med., London, UK

Volume

1

fYear

2000

fDate

2000

Firstpage

21

Abstract

The presence of space charge is thought to play a significant role in determining the electric field distribution of an insulating material such as polyethylene. The present paper focuses on the relation between atomic defects and space charge formation. The ability of defects to trap electrons in a model material is investigated using density functional theory calculations. A set of physical defects, chemical impurities and additives commonly found in polymeric insulators used for high-voltage cable insulation are considered. From the electron affinity of the model material, the trapping energies are computed

Keywords

cable insulation; density functional theory; electron affinity; electron traps; noncrystalline defects; polyethylene insulation; polymer structure; space charge; atomic defects; charge carrier traps; chemical impurities; density functional theory; electric field distribution; electron affinity; electrons; high-voltage cable insulation; polyethylene; polymeric insulators; space charge; space charge formation; trapping energies; Cable insulation; Charge carriers; Chemicals; Density functional theory; Dielectrics and electrical insulation; Electron traps; Plastic insulation; Polyethylene; Polymers; Space charge;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-6413-9

Type

conf

DOI

10.1109/CEIDP.2000.885218

Filename

885218