THERMALLY STIMULATED DISCHARGE STUDIES OF ETHYL CELLULOSE

Thermally stimulated depolarization current (TSDC) of polarised samples of ethyl cellulose (EC) has been recorded as a function of doping concentrations, heating rates and storage times. Two current maxima in positive direction are found around 60 and 110-degrees-C for pure EC samples, while for doped samples with ferrocen, an additional current maxima around 152 +/- 2-degrees-C is observed in negative direction. For doped samples with iodine one peak was found around 68 +/- 2-degrees-C in positive direction and the other peak around 135 +/- 2-degrees-C in the opposite direction. The magnitude of peak current increases with heating rate and decreases with storage time.