Thermally Stimulated Currents in Polyaniline Film and their Analyses

Abstract

Thermally stimulated currents (TSC) have been measured in undoped polyaniline film at various heating rates. Main TSC peak measured around 170K at the heating rate of 0.033K/s was separated to three single TSC curves by the proposed auto-separation method. The separated main peak evaluated as about 0.14 eV did not depend on collecting fields, but increased considerably by increasing heating rates. These results suggest the possibility of sure structual change of molecular arrangements.

Research trend in thermally stimulated current method for development of materials and devices in Japan

“…Nevertheless, these are still insufficient to discriminate overlapped TSC peaks from the original TSC curve. On the basis of advanced computer technology, new analytical methods have been developed in Japan including the asymptotic estimation method (AEM) 39) and maximum entropy method (MEM). 40) By using these methods, activation energy and other TSC parameters are accurately determined.…”

Charging property and charge trap parameters in porous polypropylene film using thermally stimulated current

“…It has been considered that charge carrier traps in a substance play an important role in the charging phenomenon. For this theme, the thermally stimulated current (TSC) (Braünlich,1979;Chen & Kirsh,1981;Ikezaki & Hori,1998;Baba & Ikezaki,1992;Ikezaki & Murata,2006;Oka & Ikezaki,1992;Perlman & Creswell,1971;Yoshida et al,1998) is one effective measurement. The TSC measurement activates a sample by corona discharge or light and gives a sample heat stimulation by constant heating rate and takes out electric charge in inside of sample to produce a current of the external circuit.…”