In order to investigate the reasons why the glycerol and polyester substrate help to increase the conductivity of the conducting films made by ink jet printing technique some additional parameters had to be analyzed.
At first, KR ¨ USS Processor Tensiometer K12 with the configuration of surface
tension measurements set at “Du No¨ uy-ring method” [24]
was used to determine the surface tension of PEDOT/PSS
and G-PEDOT/PSS solutions.