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Abstract
The electrochemical doping-undoping process, from an SC state to a metal-like one, of PMT films grafted on Pt electrodes was studied both in dynamic and static conditions. The difference in the Δ and ψ spectra for a same effective doping ratio suggested that doping species (ClO 4 −) were more homogeneously distributed into the polymer in the latter conditions than in the former. That can be the explanation for the splitting of the ϵ 2 peaks observed during the dynamic doping and undoping sweeps, suggesting the presence of both polaron and bipolaron levels in the band gap.
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