Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 39: Focus: Controlling Phase Formation Dynamics in Solution Processed Semiconductors - organized by Christoph Brabec, Jens Harting and Hans-Joachim Egelhaaf
CPP 39.3: Vortrag
Mittwoch, 3. April 2019, 16:00–16:15, H14
Supramolecular structures of amphiphilic dyes for photochemical and photophysical applications — •Martin Presselt1,2,3, Maximilian Hupfer1,2, Martin Kaufmann1, Felix Herrmann-Westendorf1,2, Saunak Das1,2, and Benjamin Dietzek1,2 — 1Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany — 2Leibniz Institute of Photonic Technology (IPHT), Jena, Germany — 3sciclus GmbH & Co. KG, Moritz-von-Rohr-Str. 1a, 07745 Jena, Germany
Beyond molecular properties the supramolecular structures essentially determine photonic [1] and electric [2] material properties. One of the approaches to control the supramolecular structure is by means of interface assembly of dyes that have been made amphiphilic. This assembly is utilized in the Langmuir-Blodgett (LB) technique [3, 4] as well as in the Liquid-Liquid Interface Precipitate (LLIP) [2] technique. In our work we utilize both methods for the fabrication of model layers with tunable supramolecular structure for optoelectronic devices and self-healing membranes. This supramolecular structural tuning enables variation of the LUMO energy of fullerene films by 120 meV, that translate to 70 mV variation in open circuit voltage of corresponding pi-Si-hybrid solar cells [2].
[1] S. Das et al., ACS Appl Mater Interfaces, 2016, 8, 21512-21521.
[2] S. K. Das et al. Advanced Energy Materials, 2018, accepted.
[3] M. L. Hupfer et al., ACS Appl Mater Interfaces, 2017, 9, 44181-44191.
[4] M. Kaufmann et al., J. Colloid Interface Sci., 2018, 526, 410-418.