Title :
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
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;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena (CEIDP), 2011 Annual Report Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4577-0985-2
DOI :
10.1109/CEIDP.2011.6232647
