Effect of temperature on the synthesis of FeCl3-doped polypyrroles studied by positron annihilation technique

FeCl3-doped polypyrrole samples have been synthesized at different temperatures, at 308 K and below. The induced defects in the doped structure were analyzed by positron lifetime and Doppler broadening of the annihilation radiation. The magnitude of the conductivity measured in the samples was found to increase monotonically with the induced defect concentration.