Berlin 2024 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 28: Poster III
CPP 28.33: Poster
Mittwoch, 20. März 2024, 11:30–13:30, Poster C
Fabrication and Characterisation of Cesium-Formamidinium Lead Iodide Perovskite Nanocrystal Layers — •Thomas Baier1, Guanjiu Pan1, Altantulga Buyan-Arivjikh1, Jinsheng Zhang1, Yanan Li1, Matthias Schwartzkopf2, Sarathlal Koyiloth Vayalil2, and Peter Müller-Buschbaum1, 3 — 1TUM School of Natural Sciences, Chair for Functional Materials, 85748 Garching, Germany — 2DESY, 22607 Hamburg, Germany — 3MLZ, TUM, 85748 Garching, Germany
Perovskite quantum nanocrystal solar cells are very promising in contributing to the renewable energy mix of the future being used as active layer within solar cells due to the quantum confinement, which occurs at crystals size below the Bohr radius. They provide high power conversion efficiencies, high photoluminescence quantum yield (PLQY), a narrow PL peak, and are stable in comparison to bulk perovskite. Furthermore, the range of usable X halides (I-, Br-, Cl-) and A cations (FA+, MA+, Cs+) enables fine control of the bandgap over the whole visible spectrum of the ABX3 perovskite structure.
Cesium-formamidinium lead iodide perovskite nanocrystal layers have been prepared using different washing processes between several deposition steps, as well as changing the ratio between cesium lead iodide and formamidinium lead iodide perovskite nanocrystals. Therefore different measurement (PL, UV-Vis, microscopy, and SEM) and deposition techniques (spin-coating, and slot-die coating) were used to obtain the optoelectronic properties of the final film.
Keywords: perovskite; solar cell; nanocrystal; slot-die coating