Title :
Absorption current studies in ethyl-cellulose
Author :
Datt, S.C. ; Keller, James M. ; Singh, Rajdeep ; Dubey, Richa ; Singh, Rajdeep
Author_Institution :
Dept. of Postgrad. Studies & Res. in Phys., Rani Durgavati Univ., Jabalpur, India
Abstract :
Absorption currents observed at various temperatures in charging mode with ethyl cellulose (EC) foil samples, prepoled under different field conditions, have been found to follow the I∝t -n (i.e., Curie-von Schweidler law) time dependence with different values of n at short and long times. The isochronals have been observed to be characterized with a peak located at 60°C. Activation energy values for this peak are observed to vary from 0.5 to 2.4 eV. In some cases the observed current tends to increase with time in the longer-time region, indicating the possibility of the existence of a peak at still longer times, similar to that found in space-charge-limited transients
Keywords :
dielectric polarisation; dielectric thin films; electrets; electrical conductivity of crystalline semiconductors and insulators; foils; organic compounds; Curie-von Schweidler law; absorption currents; activation energy; charging mode; electret; ethyl cellulose; foil samples; isochronals; prepoled samples; time dependence; Absorption; Charge carriers; Chemicals; Electrodes; Glass; Optical films; Polymers; Space charge; Steady-state; Temperature dependence;
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.1991.167204
