Thermally stimulated discharge current (TSDC) and dielectric constant of semiconducting glasses

Abstract

In this paper the results of thermally stimulated discharge current (TSDC) and dielectric constant for 40PbO-60Bi 2 O 3 glass thermoelectrets are presented. Measurements of TSDC and dielectric constant, ε ε′ ′, have been carried out in the temperature range 30-300°C. The thermoelectrets were prepared at different polarizing fields. The various observed peaks in the thermograms are discussed on the basis of space charge polarization. The trap energy is evaluated from the Garlick-Gibson plot of initial rise method. Similarly other parameters such as relaxation time, charge release etc are evaluated.

TSDC spectroscopy of relaxational and interfacial phenomena

“…So a reversal is observed from heterocurrent to homocurrent. As temperature increases the current goes on increasing in the homoside for all curves except the curve at F p = 156 kV/m [184]. We obtained similar Fig.…”

“…Burghate et al [184] studied 40PbO-60Bi 2 O 3 glass thermoelectrets. Measurements of TSDC and dielectric constant, ε′, were carried out at 300-570 K. The thermoelectrets were prepared at different polarising fields.…”

“…Three kinds of phenomena can occur in thermal charging (i) internal polarisation with the sign of heterocharge due to dipole alignment or charge separation within the dielectric i.e. dielectric absorption, (ii) homocharge deposition due to spark discharges in the air gaps and (iii) homocharge injection through contacting electrodes [184]. Pissis et al [185] reported electric and dielectric measurements of several conducting (polyethylene oxide) PEO-based electrolytes, using TSDC and thermally stimulated polarisation currents (TSPC).…”

Poole–Frenkel conduction in polyvinyl chloride stabilized with dibutylin laurate–maleate

“…Polymeric materials, with interesting electrical properties, have been studied in great details [1][2][3][4][5]. A good amount of work on the conduction mechanisms of PVC in the form of metal-polymer-metal (MPM) structure has been reported in the literature [6][7][8][9][10].…”

Structural characterization and thermally stimulated discharge conductivity (TSDC) study in polymer thin films

“…The electrets were prepared at different polarizing fields. A similar procedure was adopted for electret preparation as reported earlier by Burghate et al (2003).…”