Abstract

Poly (3, 4 – ethylenedioxythiophene) – poly (styrenesulfonate) (PEDOT: PSS) thin film has caught much attention because of its high electrical conductivity, optical transmittance and mechanical flexibility. Reducing the PSS content can improve the conductivity of PEDOT: PSS film effectively. However, few studies have been reported on the corresponding degradation behaviors and mechanisms for the PEDOT: PSS films with different PSS contents. Here, we studied the degradation phenomena under various aging conditions. Our results indicated that the degradation behaviors are determined by the content of PSS, and the degradation mechanism is related to the change of molecular configuration of PEDOT chains under various aging conditions.

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