Berlin 2015 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 7: Organic Electronics and Photovoltaics

CPP 7.8: Talk

Monday, March 16, 2015, 11:15–11:30, H 2032

Structure and Photovoltaic Performance of Chiral Anilino Squaraines — •Manuela Schiek¹, Matthias Schulz², Stefanie Brück¹, Martin Silies³, Heiko Kollmann³, Christoph Lienau³, Arne Lützen², and Jürgen Parisi¹ — ¹Energy and Semiconductor Research Laboratory, University of Oldenburg, Germany — ²Kekule-Institute for Organic Chemistry and Biochemistry, University of Bonn, Germany — ³Ultrafast Nano-Optics, University of Oldenburg, Germany

Small molecular semiconductors such as squaraines are advantageous compared to polymeric materials because they allow a more direct control of the structure on the molecular level and consequently solid state properties. Especially the implementation of chiral side chains introduces new functionalities such as circular dichroism. Different 1,3-bis(N,N-substituted-2,6-dihydroxy-anilino)squaraines with varying terminal N-substitution, in some cases including a stereogenic center, are investigated as single crystals, in thin films and blended with a fullerene acceptor as active layer in bulk heterojunction organic solar cells.