Title :
Anomalous metal-polymer interface dependence of dielectric breakdown in polyvinylidene fluoride
Author :
Zheng, J.P. ; Cygan, P.J. ; Jow, T.R.
Author_Institution :
Army Res. Lab., Fort Monmouth, NJ, USA
Abstract :
DC breakdown in polyvinylidene fluoride (PVDF) films was studied. It was found that the interface between the metal electrode and the polymer film is very important in determining the breakdown voltage. When the positive electrode was blocked by inserting a thin layer of insulating polymer between the PVDF film and the metal electrode, the breakdown voltage decreased drastically. The breakdown behavior was also studied as a function of the thickness of the polymers used to block the electrode. The results obtained agree with the observation that the piezoelectricity of PVDF is dependent on the metal-PVDF interface a dependence which is believed to be directly related to the piezoelectricity of PVDF
Keywords :
electric breakdown; metal-insulator boundaries; organic insulating materials; piezoelectric materials; DC breakdown; PVDF film; breakdown voltage; dielectric breakdown; films; metal electrode; metal-polymer interface; piezoelectricity; polyvinylidene fluoride; Breakdown voltage; Dielectric breakdown; Dielectric constant; Dielectric materials; Electric breakdown; Electrodes; Polymer films; Programming profession; Testing; Voltage measurement;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-0966-9
DOI :
10.1109/CEIDP.1993.378942
