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

fYear

1988

fDate

1-3 Sep 1988

Firstpage

472

Lastpage

476

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)

Conference_Location

Oxford

Type

conf

DOI

10.1109/ISE.1988.38605

Filename

38605