Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 37: Poster Session III
CPP 37.52: Poster
Mittwoch, 3. April 2019, 11:00–13:00, Poster B1
Investigation of Sub-Molecular Parts in Mixtures for Organic Photovoltaics — •Arthur Markus Anton1, Rico Meitzner2, Shahidul Alam2, Harald Hoppe2, and Friedrich Kremer1 — 1Peter Debye Institute for Soft Matter Physics, Leipzig University — 2Center for Energy and Environmental Chemistry Jena, Friedrich Schiller University Jena
Nowadays, renewable sources of energy together with low-cost device manufacturing are highly demanded. For this purpose, the application of organic photovoltaics (OPV) appears to be suitable for reducing environmental impact as well as direct technology cost by "green" and low-cost synthesis combined with great-scale casting methods. Despite the advantages of fullerenes in OPV, such as high electron mobility or a low LUMO energy level, their commercial application is restricted through high synthesize costs and chemical instabilities. In order to overcome these detriments, non-fullerene acceptors have obtained considerable attention. Blends of PBDB-T:ITIC achieved efficiencies up to 11 % in bulk heterojunction solar cells [1]; blends of AnE-PVstat:ITIC, instead, fall short, although photoluminescence indicates efficient quenching of donor emission [2]. It is believed that orientation and order of molecular units play an essential role for the performance of organic semiconductors [3]. Thus, a novel approach by means of FTIR spectroscopy is employed in order to analyze sub-molecular parts in polymer:acceptor bends. [1] W. Zhao et. al., Adv. Mater. 28 (2016), 4734; [2] S. Alam et. al., Chem. Pap. 72 (2018), 1769; [3] A. M. Anton et. al., J. Am. CHem. Soc. 137 (2015)