Regensburg 2022 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 1: Organic Electronics and Photovoltaics 1
CPP 1.4: Vortrag
Montag, 5. September 2022, 10:30–10:45, H38
Developing the next generation of photovoltaics with high efficiencies — •Elisabeth Erbes1,2, Matthias Schwartzkopf1, Constantin Harder1,3, Susann Frenzke1, Benedikt Sochor1, Naireeta Biswas1,2, Stephan V. Roth1,4, and Simone Techert1,2 — 1Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany — 2Institute for X-ray Physics, Goettingen University, Goettingen, Germany — 3Technical University of Munich, Munich, Germany — 4Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, Sweden
A crucial challenge in bio-inspired energy research is to develop a rationale for the synthesis and use of sustainable, bio-based materials. Cellulose fibers have excellent mechanical strength, are thermally stable, are very lightweight and have a very low surface roughness in thin films. On the other hand, the use of small molecules in OSC is well known to increase the power conversion efficiency. The idea is to combine the use of cellulose and small molecules to create a sustainable organic solar cell with high efficiencies. The current study aims to investigate systematically the OSC matrix PM6:Y6 doped with optical-light absorbing, electron transfer (ET) dyes. The structural and morphological integrity of the dyes were studied with grazing incidence small angle and wide angle X-ray scattering techniques (in situ GISAXS and static GIWAXS) and photo-sensitization experiments. This analysis showed us the intercalation dynamics, distribution and function of pyrene-based photo-dopants within the PM6:Y6 matrix and whether these dopants alter the overall polymer structures.