Regensburg 2013 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 9: Poster: Interfaces and Thin Films (joint session with DECHEMA and VDI)

CPP 9.40: Poster

Montag, 11. März 2013, 17:30–19:30, Poster C

Nanostructured Organic Solar Cells — •Thomas Pfadler, Ricky Dunbar, and Lukas Schmidt-Mende — Dept. of Physics, University of Konstanz, 78457 Konstanz, Germany

Organic solar cells have the potential to become an important low-cost alternative to conventional solar cells. However, before this can happen, the energy harvesting potential of organic solar cells must become more comparable with that of the pervading technology. This research is focusing on nanoimprint lithography (NIL), a low-cost lithographic method for high-throughput patterning applicable to organic semiconductors. This technique can be used to tailor an organic solar cells active material on a nanometer scale.

One possible application is the implementation of a plasmonic light-trapping geometry by structuring the organic semiconductor metal interface e.g. the back-electrode of a bulk heterojunction device. Another promising application of NIL aims to control the nanostructure of a donor-acceptor interface in organic devices. One organic layer e.g. the hole accepting layer is structured before the electron acceptor is subsequently deposited. Target of this approach is to enhance the overall efficiency by enhancing the interfacial area increasing the exciton separation yield and ensuring direct pathways to the electrodes minimizing charge recombination.