SKM 2023 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.43: Poster
Montag, 27. März 2023, 18:00–20:00, P3
Exploring the impact of nucleation seeds on the defect formation of printed hybrid perovskite films — •Altantulga Buyan-Arivjikh1 and Peter Müller-Buschbaum1, 2 — 1TUM School of Natural Sciences, Chair for Functional Materials, Garching — 2MLZ, TUM, Garching
In the research of next-generation solar technologies, perovskite-based devices are prominent candidates due to their lucrative power conversion efficiencies and ease of fabrication. Such devices typically contain a polycrystalline perovskite layer grown via various coating methods. Due to the short timeframe of the growth process, the formation of defects is inevitable, leading to increased non-radiative recombination- and decreased extraction of photogenerated charge-carriers. One route to counteract the extensive formation of defects would be the addition of external seeds in the precursor solutions, leading to more controlled nucleation and improved crystallinity of the thin film. In this study, different nucleation seeds in the precursor solutions were used for the fabrication of polycrystalline perovskite thin films via slot-die coating. The effect of the seeds on the formation of defects in the film was explored via optical spectroscopical methods such as UV-vis & PL spectroscopy.