Ageing of poly(3,4-ethylenedioxythiophene): Kinetics of conductivity decayand lifespan

Kinetics studies of the conductivity degradation of doped PEDOT thin layer laid on a polymeric substrate obtained through accelerated ageing tests are presented. In first approximation, the conductivity decay in air can be tr eated as a pseudo-first order process, in which time constant, tau, follows an Arrehnius law which allowed the prediction of the long-term behaviour o f the conductivity.