Title :
Space charge limited currents in spherulitic polypropylene
Author :
Ikezaki, Kazuo ; Fujii, Daisuke
Author_Institution :
Dept. of Instrum. Eng., Keio Univ., Yokohama, Japan
Abstract :
Space-charge-limited currents were observed in spherulitic polypropylene films containing large spherulites which are two-dimensionally grown. The number of charge-trapping sites N t and the mobility μ were estimated to be of the orders of 1014 (cm-3) and 10-9 (cm2-V -1-s-1), respectively. It was also found that Nt decreased with increasing mean diameter R of spherulites in the sample, while μ increased with R
Keywords :
carrier mobility; dielectric thin films; electrets; electron traps; electronic conduction in insulating thin films; hole traps; polymer films; space-charge-limited conduction; carrier mobility; charge-trapping sites; electret; large spherulites; mean diameter; polypropylene films; space charge limited currents; spherulitic polypropylene; Crystallization; Current measurement; Electric breakdown; Electrodes; Plastic insulation; Polymer films; Space charge; Switches; Temperature; Voltage;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167206
