Regensburg 2013 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 32: Poster Session IV: Atomic layer deposition; Organic thin films; Organic Electronics and Phototovoltaics; Organic Materials for Spintronics - from spinterface to devices; Thin film photovoltaic materials and solar cells

DS 32.35: Poster

Donnerstag, 14. März 2013, 17:00–20:00, Poster B2

Influence of PCBM on the stability of the LBG Polymer PCPDTBT — •Ulf Dettinger¹, Heiko Peisert¹, Hans-Joachim Egelhaaf², and Thomas Chassé¹ — ¹Eberhard-Karls-University Tübingen, Institute for Physical and Theoretical Chemistry, Auf der Morgenstelle 18, D-72076 Tübingen, Germany — ²Belectric OPV GmbH, Landgrabenstr. 94, D-90443 Nürnberg, Germany

Organic photovoltaic (OPV) incorporates an auspicious technology for the rising energy costs of the future. While aspiring for devices with higher efficiencies, the stability of the device materials is getting more and more important. It was observed, that the electron acceptor (EA) in bulk-heterojunction solar cells can affect the stability significantly [1]. We study the influence of the commonly used EA material PC[60]BM on the stability of the promising Low-Band-Gap Polymer PCPDTBT under illumination of standard Air Mass 1.5 conditions. The Photo-Degradation of the materials was monitored using UV/VIS and FTIR transmission spectroscopy. Generally PCPDTBT exhibits an enhanced stability compared to the state of the art material P3HT. Different mechanisms for the influence of PC[60]BM on the stability of both donor materials are discussed.

[1] A. Dupuis et al. Eur. Phys. J. Appl. Phys., 2011, 56, 34104