Title :
Thermally stimulated current study on polyimide film
Author :
Qingquan, Lei ; Fulei, Wang
Author_Institution :
Dept. of Electr. Mater. Eng., Harbin Inst. of Electr. Technol., China
Abstract :
The authors have observed two peaks in TSC (thermally stimulated current) spectra of Du Pont polyimide film. The low-temperature peak in the range of 50-70°C is ascribed to dipole depolarization of unimidized polyamic acid in the film. The high-temperature peak in the range of 160-180°C, in agreement with the authors´ experimental results, is attributed to depolarization of ionic space charge generated by ionization of unimidized polyamic acid, ionic impurities, and water and then bound into Frohlich´s two-potential well
Keywords :
dielectric depolarisation; dielectric thin films; polymer films; space charge; thermally stimulated currents; 160 to 180 degC; 50 to 70 degC; Du Pont polyimide film; Frohlich´s two-potential well; TSC spectra peaks; dipole depolarization; high-temperature peak; ionic impurities; ionic space charge depolarisation; low-temperature peak; thermally stimulated current; unimidized polyamic acid; water; Dielectrics; Electron traps; Ionization; Metallization; Optical polarization; Polyimides; Potential well; Space charge; Temperature distribution; Voltage;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford
DOI :
10.1109/ISE.1988.38605
