Regensburg 2013 – scientific programme
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DS: Fachverband Dünne Schichten
DS 16: Organic Thin Films I
DS 16.5: Talk
Tuesday, March 12, 2013, 15:45–16:00, H32
Encapsulated metal nanoparticles for absorption enhancement of thin film organic photovoltaic cells — •Verena Kolb1,2, Andreas Steindamm1,3, Michael Brendel1,3, Martin Kamp4, and Jens Pflaum1,3 — 1Experimental Physics VI, Julius Maximilians University of Würzburg, 97074 Würzburg — 2Center for Nanosystems Chemistry, 97074 Würzburg — 3ZAE Bayern, 97074 Würzburg — 4Technical Physics, Julius Maximilians University of Würzburg, 97074 Würzburg
Utilization of plasmonic effects at metal nanoparticle surfaces provides an interesting approach to modify the optical properties of molecular thin films and thereby, to enhance their effective absorption. This enhancement is caused by an increase of the near-field component and the scattering of incident light and might be applied in e.g. organic photovoltaic (OPV) cells. However, as a drawback such metal particles are able to quench the photogenerated excitons and trap free charges. An encapsulation of the particles may help to reduce these loss mechanisms. In this contribution we present our latest results on preparation of encapsulated metal particles and their influence on thin layers of the organic semiconductor Diindenoperylene (DIP). Optical effects are measured via UV/VIS and photoluminescence spectroscopy. Finally DIP/C60 OPV cells with embedded particles were built and electrically and optically characterized. Financial support by the Solar Technologies go Hybrid project is gratefully acknowledged.