Study of space charge effects in polyethylene by thermal pulse current technique

Author

Ieda, M. ; Mizutani, T. ; Suzuoki, Y. ; Yokota, Y.

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Japan

fYear

1988

fDate

12-16 Sep 1988

Firstpage

586

Abstract

The effects of oxidation on space-charge formation, carrier injection, and electrical conduction in polyethylene (PE) were studied by using thermal pulse current and thermally stimulated current (TSC) techniques. Oxidation increases the conduction current by a few orders of magnitude and negative homo space charge is formed near the cathode. The introduction of oxidized PE layer on the surface of unoxidized PE enhances both electron and hole injection. The enhanced electron injection predominates over the hole injection and plays an important role in the increase of conduction with oxidation. The negative homo space charge is released around 40°C and gives rise to a TSC peak

Keywords

oxidation; polymers; space-charge-limited conduction; thermally stimulated currents; carrier injection; electrical conduction; enhanced electron injection; hole injection; negative homo space charge; oxidation; polyethylene; space charge effects; thermal pulse current technique; thermally stimulated current; Cathodes; Charge carrier processes; Dielectric measurements; Electrodes; Oxidation; Polyethylene; Pulse measurements; Space charge; Thermal conductivity; Thermal engineering;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38465

Filename

38465