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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 17: Poster Session I

CPP 17.42: Poster

Monday, March 27, 2023, 18:00–20:00, P3

Investigating the Impact of Surfactants on Perovskite Film Formation Using In Situ Optical Spectroscopy — •Tobias Siegert, Simon Biberger, Konstantin Schötz, Anna Köhler, and Fabian Panzer — Soft Matter Optoelectronics (Experimental Physics II), University Bayreuth, Germany

Recent reports have shown that adding surfactants in the solution processing of halide perovskites, e.g. by blade-coating, can improve the morphology and optoelectronic properties of the resulting perovskite sample. In general, the crystallization processes of halide perovskites occuring during thin film formation largely determine the final film morphology. Thus, here we investigate the change in crystallization dynamics upon addition of surfactants to the precurser solution of halide perovskites. We monitor the film formation processes by multimodal optical in situ spectroscopy[1] to gain detailed insights about the film formation process of halide perovskites.[2-4] This finally allows us to elucidate the exact role and the impact of the presence of surfactants during solution processing on the crystallization behavior of the perovskite.

[1] Buchhorn, Wedler, Panzer. J. Phys. Chem. A 2018

[2] Chauhan, Zhong, Köhler, Panzer et al. J. Mater. Chem. A. 2020

[3] Schötz, Greve, Panzer et al. Adv. Optical Mater. 2021

[4] Biberger, Panzer et al. J. Mater. Chem. A. 2022