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DPG

Berlin 2015 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 2: Organic-inorganic perovskite semiconductors (with O)

HL 2.5: Talk

Monday, March 16, 2015, 10:30–10:45, ER 164

Fluorescence studies on organometal halide perovskite nanoparticles — •Niklas Mutz1,2, Carlos Cárdenas-Daw1,2, Ming Fu1,2, Verena Hintermayr1,2, Mathias Vollmer1,2, Jacek Stolarczyk1,2, Alexander Urban1,2, and Jochen Feldmann1,21Photonics and Optoelectronics Group, Ludwig-Maximilians-Universität München, Amalienstr. 54 80799 München, Germany — 2Nanosystems Initiative Munich Schellingstraße 4 80799 München, Germany

During recent years organometal halide perovskite based solar cells have shown a significant rise in power conversion efficiency. Despite this improvement in fabricating efficient perovskite solar cells, the underlying photophysical properties are not yet fully understood. An important insight into processes such as charge generation and separation can be obtained by studying single particles instead of disordered films. In this project we investigate the morphology and photoluminescence properties of individual lead halide perovskite particles by varying the chemical synthesis procedure. In particular we investigate their temperature dependent photoluminescence signal and in addition have performed electric field-dependent studies to get insight into the charge separation process.

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