<i>In operando</i> nanomechanical mapping of PEDOT:PSS thin films in electrolyte solutions with bimodal AFM
Simone Benaglia, Sofia Drakopoulou, Fabio Biscarini, Ricardo Garcı́a
Abstract
bimodal AFM data obtained by applying a sequence of doping/de-doping bias cycles showed a significant decrease in the modulus (70%) that saturated after about 10 cycles. A similar sequence of biases at the opposite polarity did not significantly influence the mechanical behaviour of PEDOT:PSS. The decrease in the modulus was explained by the development of persistent hydration, which was enhanced by the cations trapped inside the organic electronic material.
Topics & Concepts
PEDOT:PSSMaterials scienceElectrolyteAqueous solutionThin filmModulusDopingPolymerConductive polymerNanotechnologyChemical engineeringComposite materialElectrodeOptoelectronicsOrganic chemistryChemistryPhysical chemistryEngineeringConducting polymers and applicationsAdvanced Sensor and Energy Harvesting MaterialsFuel Cells and Related Materials