Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 30: Poster: Organic Electronics and Photovoltaics

CPP 30.13: Poster

Dienstag, 8. März 2016, 18:15–21:00, Poster B2

In situ polymerized insoluble semiconducting polymers for application in organic solar cells — •Jenny Lebert, Anna Sanina, Eva Kratzer, and Eva M. Herzig — Technische Universität München, Munich School of Engineering, Lichtenbergstr. 4, 85748 Garching

Organic semiconducting materials can be applied in optoelectronic devices such as organic light-emitting diodes and organic solar cells. The polymers employed usually exhibit a conjugated backbone of varying complexity which is equipped with insulating, alkyl side chains to make them processable from solution. While nowadays lab scale organic solar cells can easily perform at efficiencies above ten percent, they still suffer from fast degradation induced amongst others by external impacts such as water, oxygen and UV light. In situ polymerization offers the possibility to process polymers from solution without the need for solubilizing side chains. Thereby the amount of electrically insulating molecular parts in the film are reduced to a minimum. Moreover, the simplified chemical structure of the polymers leads to a higher stability. In this work, in situ polymerized polythiophene thin films are investigated in terms of their stability in organic solar cells. For this purpose, differently post-treated films are analyzed regarding their morphology, conductivity and optoelectronic properties.