Despite the high electrical conductivity of optically transparent
organic semiconductor films, their structural and electrical
heterogeneity induces capacitance effects. Broadband Dielectric
Spectroscopy (BDS) is employed in order to investigate two distinct
relaxation mechanisms of poly(3,4-ethylenedioxythiophene) with
polyelectrolyte (PEDOT:PSS) films which constitutes of a suspension of
conducting PEDOT: PSS grains, shelled by an insulating layer of PSS. In
this paper a general methodology is proposed in order to get an insight
into the local conductivity of mesoscopic conducting phase and to
calculate the activation energies of the relaxation mechanisms. (C) 2015
Published by Elsevier Ltd
