Study on the detrapping of charge carriers in polythylene films

Author

He, Lijuan ; Li, Dawei ; Wang, Dongni ; Li, Jing ; Wang, Xuan ; Lei, Qingquan

Author_Institution

Harbin Univ. of Sci. & Technol., Harbin, China

fYear

2011

fDate

16-19 Oct. 2011

Firstpage

264

Lastpage

266

Abstract

Polyethylene films were studied by photo-stimulated discharge (PSD) and thermally stimulated current (TSC) to understand the detrapped process and the energy spectrum distribution of trap of space charges. The space charge profiles were determined in real time by the pulsed electro-acoustic (PEA) technique. The results showed that the activation energy estimated from the non-isothermal TSC and PSD was quite different, it was at 0.77eV in TSC, meanwhile that was between 4.80-5.90eV from PSD. The effect of thermal erosion of traps was further clarified and Photo-stimulated discharge can more truly characterize the intrinsic properties of trap of the polymer.

Keywords

discharges (electric); polymer films; PEA technique; activation energy; charge carrier detrapping; detrapped process; electron volt energy 0.77 eV; electron volt energy 4.80 eV to 5.90 eV; nonisothermal PSD; nonisothermal TSC; photo-stimulated discharge; polythylene films; pulsed electro-acoustic technique; space charge profiles; space charge trap energy spectrum distribution; thermal erosion effect; thermally stimulated current; Dielectrics; Discharges; Polyethylene; Space charge; Space heating;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2011 Annual Report Conference on

Conference_Location

Cancun

ISSN

0084-9162

Print_ISBN

978-1-4577-0985-2

Type

conf

DOI

10.1109/CEIDP.2011.6232647

Filename

6232647