Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 25: Poster Session II

CPP 25.12: Poster

Dienstag, 2. April 2019, 14:00–16:00, Poster B1

Influencing the properties of fullerene-free bulk heterojunction blends for photovoltaic applications — •Amir Kotobi1, Sebastian Grott1, Claudia Ott2, Tom Nilges2, and Peter Müller-Buschbaum111TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — 22 TU München, Department Chemie, LS innovative Materialien, Lichtenbergstraße 4, 85748 Garching

Over the past decades, organic electronics have attracted increased focus in the field of research. Especially organic solar cells received a high attention, due to their advantages, such as the tuneability of photo-active properties, the possibility to be produced at low-cost, the flexibility and the light-weight, compared to commonly-used inorganic based solar cells. Recently, the most widely investigated bulk heterojunction donor-acceptor system of P3HT:PCBM was doped with iron oxide nanoparticles, resulting in an increase of efficiency. Based on this approach, we investigate the effect of doping photoactive layers consisting of the low-bandgap polymer PBDB-T and the non-fullerene acceptor ITIC with SnIP nanoparticles We study the influence of different nanoparticle concentrations on current-density voltage characteristics and the absorbance. These optoelectronic properties are related to structure information obtained via advanced scattering techniques in order to optimize the device performance.

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