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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 6: Poster Session I - Molecular Electronics and Wetting

CPP 6.8: Poster

Monday, March 22, 2021, 16:30–18:30, CPPp

Impact of thermal treatment and humidity exposure on surface concentration and work function of PEDOT:PSS thin films — •Aman Anand1,2, Jose Prince Madalaimuthu1,2,3, Maximilian Schaal4, Felix Otto4, Marco Gruenewald4, Shahidul Alam1,2, Torsten Fritz4, Ulrich S. Schubert1,2, and Harald Hoppe1,21Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany — 2Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany — 3Abbe School of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Straße 6, 07745 Jena, Germany — 4Institute of Solid State Physics, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany

Poly (3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is the most common and successful commercial conductive polyelectrolyte in the field of optoelectronics. In the present work, we have investigated the impact of the thermal treatments and relative humidity during film casting or storage on the work function of PEDOT:PSS films made from various commercial formulations. We find clear trends between the processing conditions and absolute work function which could be associated with the metal ions on the surface of the films. As a conclusion, we can suggest suitable processing parameters for a wide range of formulations and targeted electronic properties

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