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Dresden 2017 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 86: New Materials

HL 86.3: Talk

Friday, March 24, 2017, 10:00–10:15, POT 112

Molecular Self-Assembly of Organic-Inorganic Perovskite Nanocrystals — •Maximilian E. Löw1,2, Verena A. Hintermayr1,2, Theobald Lohmüller1,2, Alexander S. Urban1,2, and Jochen Feldmann1,21Chair of Photonics and Optoelectronics, Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität (LMU), Amalienstraße 54, 80799 Munich, Germany — 2Nanosystems Initiative Munich (NIM), Schellingstraße 4, 80799 Munich, Germany

Having already shown great promise in the bulk form for optoelectronic applications, many researchers are now focusing on the synthesis of nanocrystals of organic-inorganic halide perovskites. Here, we present a straightforward method for producing highly ordered patterns of perovskite nanocrystals based on molecular self-assembly. With this new method, we are able to control structural parameters of the nanocrystal assembly, such as the particle size and interparticle distance over a large surface area. The optical properties of these nanocrystal arrays are investigated by UV-Vis and photoluminescence spectroscopy, while the spatial dimensions and lateral orientation of the nanocrystal assemblies are analyzed by electron microscopy. Overall, our approach represents a new and highly reproducible way of producing perovskite nanopatterns for photonics applications.

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