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Zhang, Jiyun [Verfasser:in]; Wu, Jianchang [Verfasser:in]; Meng, Wei [Verfasser:in]; Zhang, Kaicheng [Verfasser:in]; Liu, Chao [Verfasser:in]; Osvet, Andres [Verfasser:in]; Li, Ning [Verfasser:in]; Halik, Marcus [Verfasser:in]; Heiss, Wolfgang [Verfasser:in]; Zhao, Yicheng [Verfasser:in]; Brabec, Christoph J. [Verfasser:in]; Langner, Stefan [Verfasser:in]; Zhao, Baolin [Verfasser:in]; Xie, Zhiqiang [Verfasser:in]; Hauch, Jens [Verfasser:in]; Afify, Hany A. [Verfasser:in]; Barabash, Anastasia [Verfasser:in]; Luo, Junsheng [Verfasser:in]; Sytnyk, Mykhailo [Verfasser:in]

Exploring the Steric Hindrance of Alkylammonium Cations in the Structural Reconfiguration of Quasi‐2D Perovskite Materials Using a High‐throughput Experimental Platform

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  • Medientyp: E-Artikel
  • Titel: Exploring the Steric Hindrance of Alkylammonium Cations in the Structural Reconfiguration of Quasi‐2D Perovskite Materials Using a High‐throughput Experimental Platform
  • Beteiligte: Zhang, Jiyun [Verfasser:in]; Wu, Jianchang [Verfasser:in]; Meng, Wei [Verfasser:in]; Zhang, Kaicheng [Verfasser:in]; Liu, Chao [Verfasser:in]; Osvet, Andres [Verfasser:in]; Li, Ning [Verfasser:in]; Halik, Marcus [Verfasser:in]; Heiss, Wolfgang [Verfasser:in]; Zhao, Yicheng [Verfasser:in]; Brabec, Christoph J. [Verfasser:in]; Langner, Stefan [Verfasser:in]; Zhao, Baolin [Verfasser:in]; Xie, Zhiqiang [Verfasser:in]; Hauch, Jens [Verfasser:in]; Afify, Hany A. [Verfasser:in]; Barabash, Anastasia [Verfasser:in]; Luo, Junsheng [Verfasser:in]; Sytnyk, Mykhailo [Verfasser:in]
  • Erschienen: Wiley-VCH, 2022
  • Erschienen in: Advanced functional materials 32(43), 2207101 - (2022). doi:10.1002/adfm.202207101
  • Sprache: Englisch
  • DOI: https://doi.org/10.1002/adfm.202207101
  • ISSN: 1616-3028; 1057-9257; 1099-0712; 1616-301X
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: Reduced-dimensional (2D or quasi-2D) perovskites have recently attracted considerable interest due to their superior long-term stability. The nature of the intercalating cations plays a key role in determining the physicochemical properties and stability of the quasi-2D perovskites. Here, the thermal stability of a series of 2D Ruddlesden−Popper (RP) perovskites is studied using seven types of intercalating cations with increasing linear carbon-chain length from ethylammonium (EA) to n-dodecylammonium (DA) through a high-throughput platform. The results show that long-chain cations in quasi-2D perovskite films lead to strong steric hindrance between adjacent perovskite domains, thus suppressing Ostwald ripening during the thermal-aging process. For short-chain cations, increased-dimensional phase redistribution during the aging period is observed, which can benefit a concomitant regeneration of the 3D/3D-like perovskite phases. The impact of steric hindrance on structural reconfiguration and the subsequent phase redistribution in quasi-2D perovskites are systematically characterized by UV–vis absorption spectra, photoluminescence spectra, and X-ray diffraction patterns. Due to the steric hindrance effect, an optimal chain length is found to maximize film stability by balancing the water/oxygen resistance and increased-dimensional phase redistribution. This work provides new insight into the thermal stability of quasi-2D perovskites.
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