Berlin 2024 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 66: Poster: Nanostructures at Surfaces
O 66.20: Poster
Mittwoch, 20. März 2024, 18:00–20:00, Poster C
Imaging charge carriers generation process in 2D semiconducting perovskite material — •Dmitrii Sychev1,4, Andrei Mitrofanov1,2, Khrystyna Rymsha1, Karina Zakirova1, Petr Formanek1, Darius Pohl3, Eva Bittrich1, Quinn Besford1, Brigitte Voit1,2, and Ilka Hermes1 — 1Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany — 2Chair of Organic Chemistry of Polymers, Technische Universität Dresden, 01069 Dresden, Germany — 33Dresden Center for Nanoanalysis (DCN), Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01069 Dresden, Germany — 4Technische Universität Dresden, Helmholtztraße 10, Dresden 01062
Organic-inorganic halide perovskites have found their application as photodetectors. The transition from bulk to 2D material enables a greater variety of possible compositions as well as their functionalities.
Here, we investigated novel thin (nanometer scale) particles of halide perovskite semiconducting 2D material for their potential application as photodetectors. Kelvin probe force microscopy (KPFM) is well suited for this purpose, revealing local contact potential. KPFM measurements were performed under 405 and 458 nm illumination. The measurements show a significant decrease in the surface potential of the particles under light. This photoresponse demonstrates the suitability of the material for photodetection applications.
Keywords: KPFM; 2D materials; photodetection