Berlin 2018 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 65: Functional Materials (Actuators, filters, sensors, shape memory)

MM 65.2: Vortrag

Donnerstag, 15. März 2018, 17:45–18:00, H 0106

Analysis of different methods for methylammonium lead iodide perovskite deposition into nanoporous anodic-aluminum oxide membranes — •Mirko Gabski, Martin Peterlechner, and Gerhard Wilde — Institute of Materials Physics, University of Münster, Germany

Organometal-trihalide perovskites are organo-metal salts which have gained popularity as a light harvesting material in thin film solar cells in recent years due its favorable properties (e.g. cheap and simple processing, high absorption coefficient, direct band gap, high charge carrier mobility) and led to solar cells with efficiencies up to ∼20 %. Anodic-aluminum oxide (AAO) provides a highly ordered nanoporous template consisting of hexagonally arranged pores with tunable pore diameters ranging from ∼10 to ∼200 nm and a thickness between ∼10 nm and 100 µm which is easily synthesized using a simple anodization procedure and is thus excellently suited for the synthesis of quasi-one-dimensional nanostructures. By choosing a suitable deposition method the AAO template can be used to fabricate an array of quasi-one-dimensional perovskite nano-rods in parallel circuit where the direction of charge carrier flow is guided by the confinement imposed by the surrounding AAO. In this work, different deposition methods (e.g. drop-coating, dip-coating, spin-coating and co-evaporation) are investigated for their applicability for perovskite deposition into AAO membranes with varying thicknesses and pore diameters since changing aspect ratios impose different constraints on the choice of the most suitable deposition method.