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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 Sychev^1,4, Andrei Mitrofanov^1,2, Khrystyna Rymsha¹, Karina Zakirova¹, Petr Formanek¹, Darius Pohl³, Eva Bittrich¹, Quinn Besford¹, Brigitte Voit^1,2, 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