New publication: "Local disorder at the phase transition interrupts ambipolar charge carrier transport in large crystal methylammonium lead iodide thin films" by Alexander Biewald, Nadja Giesbrecht, Thomas Bein, Pablo Docampo, Achin Hartschuh and Richard Ciesielski

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New publication: "Non-linear Raman scattering intensities in graphene ", by Veit Giegold, Lucas Lange, Richard Ciesielski and Achim Hartschuh

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New publication: "Controling photon antibunching from 1D emitters using optical antennas", Lucas Lange, Frank Schäfer, Alexander Biewald, Richard Ciesielski and Achim Hartschuh

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New Publication: "Uniaxial transition dipole moments in semiconductor quantum rings caused by broken rotational symmetry", Nicolai F. Hartmann, Matthew Otten, Igor Fedin, Dmitri Talapin, Moritz Cygorek, Pawel Hawrylak, Marek Korkusinski, Stephen Gray, Achim Hartschuh and Xuedan Ma

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Universitaet Muenchen
Department Chemie
Butenandtstr. 5-11 (Haus E, Gerhard-Ertl-Gebaeude)
81377 Muenchen

Phone: +49 89 2180 77515
Mail: Prof. A. Hartschuh
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Organic semiconductor thin films

Organic polymers find wide application in electronics and optoelectronics due to their flexibility, low cost and non-toxicity, and appealing optical properties. To increase the efficiency of these solar cells further and to make them more competitive with inorganic devices, a major disadvantage of polymer materials has to be overcome: the short exciton diffusion length on the order of 10 nm that is substantially smaller than the absorption length.

In collaboration with the group of Prof. Lukas Schmidt-Mende (University of Konstanz) and the group of Prof. Christina Scheu (LMU Munich), we investigate the optical properties of organic semiconductor thin films deposited on nanostructured surfaces using time-resolved two-photon photoluminescence (PL) microscopy.

Our findings underline the importance of the film morphology and its control for the optimization of polymer solar cells. (Further information available: M. Handloser, Nanotechnology 23, 305402 (2012).)