Berlin 2018 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 23: Organic Photovoltaics I
CPP 23.3: Talk
Tuesday, March 13, 2018, 10:15–10:30, C 243
Photovoltaic Performance of Non-Fullerene Acceptors with Anthracene-Containing PPE-PPV — Shahidul Alam1,2, Rico Meitzner1,2, Christian Friebe1,2, Jonathan Cann4, Johannes Ahner2, Christoph Ulbricht3, Zhipeng Kan5, Stephanie Hoeppener2, Martin D. Hager1,2, Daniel A. M. Egbe3, Gregory C. Welch4, Frédéric Laquai5, Ulrich S. Schubert1,2, and •Harald Hoppe1,2 — 1CEEC, Friedrich Schiller University Jena — 2IOMC, Friedrich Schiller University Jena — 3Institute of Polymeric Materials and Testing, Johannes Kepler University, Linz, Austria — 4Department of Chemistry, University of Calgary, Canada — 5KAUST, Kingdom of Saudi Arabia
Recently, non-fullerene acceptors (NFAs) have received increasing attention for use in polymer-based bulk-heterojunction organic solar cells, as they have demonstrated improved photovoltaic performances as compared to conventional polymer-fullerene blends. Polymer solar cells based on an anthracene-containing poly(p-phenylene ethynylene)-alt-poly(p-phenylene vinylene) (PPE*PPV) copolymer with statistical side chain configuration (AnE-PVstat) in combination with various electron accepting materials were prepared and studied. In contrast to blends with PCBM, the almost complete extinction of the polymer photoluminescence in these donor-acceptor blends indicated too fine-scaled intermixing. This seems to cause poor photovoltaic performance. Time-delayed collection-field (TDCF) measurements revealed that the photovoltaic effectiveness of these organic semiconductor blends was strongly limited by insufficient charge generation and extraction.