Carrier dynamics in conducting polymers: Case of PF6 doped polypyrrole

The phase-sensitive sub-THz data which were a crucial ingredient for the consistent analysis of optical reflectance data by the KK method was shown. In the case of disordered low-dimensional systems such as conducting polymers, charge carrier dynamics was dominated by the contribution at low energies, which can be probed only by sub-THz complex dielectric spectroscopy. For PPy the low-energy carrier dynamics was determined by the combination of coherent and incoherent transport channel between conjugated chain segments, where the coherent channel gives rise to the low-energy structure and negative value of Ε, and the unusually long values of τ follow from the small coherent tunnel rate.