Thermally stimulated discharge current studies in copper phthalocyanine - doped polystyrene films

✍ Scribed by Shrivastava, S. K. ;Ranade, J. D. ;Shrivastava, A. P.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1981
• Tongue: English
• Weight: 279 KB
• Volume: 13
• Category: Article
• ISSN: 0007-1641
• DOI: 10.1002/pi.4980130403

✦ Synopsis

Abstract

To improve the electret characteristics, TSD current studies of copper phthalocyanine ‐ doped polystyrene films of about 20 microns thickness have been made as a function of doping concentration, poling temperature and field. Generally the thermograms observed exhibit α and ρ peaks. The activation energy is found to decrease as the concentration of the dopant in the polymer is increased. It is established that keeping the forming field constant and by increasing the concentration of the dopant, the same polarisation can be obtained at a lower poling temperature. A Maxwell‐Wagner two‐phase model with space ‐ charge build‐up seems to provide a possible mechanism for the polarisation.