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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 12: Poster 1

CPP 12.42: Poster

Monday, September 5, 2022, 18:00–20:00, P1

Investigating the Impact of Surfactants on Perovskite Crystallization during Thin Film Solution Processing Using In Situ Optical Spectroscopy — •Tobias Siegert, Simon Biberger, Konstantin Schötz, and Fabian Panzer — University, Bayreuth, Germany

Recent reports have shown that adding surfactants in the solution processing of halide perovskites, e.g. by blade-coating, can improve their morphology and optoelectronic properties[1]. In general the crystallization processes of halide perovskites that occur 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 solution processing of halide perovskites. We monitor the film formation processes by multimodal optical in situ spectroscopy[2], so that detailed insights about the film formation process of halide perovskites can be gained[3,4]. 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] Deng et al. Nat Energy 2018

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

[3] Chauhan, Zhong et al. J. Mater. Chem. A. 2020

[4] Schötz et al. Adv. Optical Mater. 2021