Title :
Charge dynamics as revealed by pulse discharge current spectra in polymer films
Author :
Feihu Zheng ; Chen Lin ; Yewen Zhang ; Zhenlian An
Author_Institution :
Shanghai Key Lab. of Special Artificial Microstructure Mater. & Technol., Tongji Univ., Shanghai, China
Abstract :
Space charge dynamics were studied by analyzing the pulse discharge current spectra in polymer film. Polymer samples with aluminum-metalized electrodes on both sides were subjected to negative DC field of 200-400 MV/m for 1-10 minutes. The subsequent short circuit current by connecting the two sides was monitored by AC current probe P6022 (Tektronix). The time coefficient of the decreasing oscillating current was found to be a changeable parameter. The periods of oscillating current almost are a constant. These results were thought to relate to charge injection and charge traps features.
Keywords :
discharges (electric); polymers; short-circuit currents; space charge; AC current probe; aluminum metalized electrodes; charge injection; charge trap; negative DC field; oscillating current; polymer films; pulse discharge current spectra; short circuit current; space charge dynamics; Discharges (electric); Polymer films; Polymers; RLC circuits; Resistors; Space charge; oscillating discharge; space charge polarization;
Conference_Titel :
Electrical Insulating Materials (ISEIM), Proceedings of 2011 International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-4-88686-074-3
DOI :
10.1109/ISEIM.2011.6826323
