The influence of spatial disorder of the ion distribution on the surface morphology in thin films of blend based organic mixed ionic-electronic conductors

Conjugated Polymer/Molten Salt Blend Optimization

“…Since for such electric fields the polymer is insulating and the salt is highly polarizable, this results in a high imaging contrast between the polymer and salt domains. In the dynamic mode this contrast is still higher than in the EFM static mode used in our previous report 12 (here we note that for our samples simple topographic AFM scans such as the ones successfully used in ref are not sufficient to get a good contrast). In Figure , we show typical EFM images obtained for three different salt concentrations.…”

Enhanced electroluminescent efficiency with ionic liquid doped into PEDOT:PSS hole-injecting layer

“…Their cooperative impact on the device current is identified by the obvious decrease of device luminance at the 1wt% IL-doped content. Additionally, the return of device current at the higher ILdoping content is probably caused by the excess ions from [BMIm]Cl in the transition process of coulombic interaction from [PEDOT:PSS] to [[BMIm]Cl:PSS], giving rise to the transition of conductivity mechanism between ionic conductivity and electronic conductivity in organic mixed ionic electronic conductor [32,33]. This is a little different from the previous conclusions about the secondary doping of PEDOT:PSS, that the conductivity change is due to the phase segregation between PEDOT and PSS resulting in the partial removal of PSS from PEDOT:PSS and the conformational change of PEDOT chains from a coil structure to an extended coil or linear structure [12,13].…”

Organic light-emitting diodes and organic light-emitting electrochemical cells based on silole–fluorene derivatives

“…[8,12] In our experiments, we took advantage of the fact that under moderate electric field the polymer is insulating, in contrast with the molten salt domains that are highly polarizable. This allowed us to use the AFM set-up in a Kelvin Probe Force Microscopy mode (KPFM) [13] .…”