Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Poster Session III

CPP 37.12: Poster

Mittwoch, 3. April 2019, 11:00–13:00, Poster B1

Time-Resolved Microwave Conductivity on Lead Halide Perovskite Films — •Patrick Dörflinger¹, Andreas Baumann², Andreas Sperlich¹, and Vladimir Dyakonov¹ — ¹Experimental Physics VI, Julius Maximilian University of Würzburg, 97074 Würzburg — ²Bavarian Center for Applied Energy Research (ZAE Bayern), 97074 Würzburg

Perovskite solar cells are one of the most promising new photovoltaic technologies with steadily rising efficiencies. To further improve their potential performance and stability, it is essential to understand their optoelectrical properties as well as to develop novel, not yet established, perovskite materials. These must be extensively characterized prior to solar cell fabrication. With Time-Resolved Microwave Conductivity (TRMC) the mobility and lifetime of photogenerated charge carriers in a perovskite layer can be determined in a non-contact way. The TRMC measurement technique is based on the interaction of an applied electro-magnetic field with the charge carriers in the semiconductor material, which leads to a time-dependent change in conductance. We use TRMC to probe the charge carrier dynamics in various perovskite materials, such as methylammonium lead iodide and mixed cation and halide perovskite.