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

Zhang J, Wu J, Langner S, Zhao B, Xie Z, Hauch J, Afify HA, Barabash A, Luo J, Sytnyk M, Meng W, Zhang K, Liu C, Osvet A, Li N, Halik M, Heiß W, Zhao Y, Brabec C (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Advanced Functional Materials Wiley-VCH Verlag

DOI: 10.1002/adfm.202207101

Abstract

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.

Authors with CRIS profile

Jiyun Zhang Institute Materials for Electronics and Energy Technology (i-MEET) Jianchang Wu Institute Materials for Electronics and Energy Technology (i-MEET) Stefan Langner Institute Materials for Electronics and Energy Technology (i-MEET) Baolin Zhao Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe) Zhiqiang Xie Institute Materials for Electronics and Energy Technology (i-MEET) Jens Hauch Institute Materials for Electronics and Energy Technology (i-MEET) Anastasiia Barabash Institute Materials for Electronics and Energy Technology (i-MEET) Junsheng Luo Institute Materials for Electronics and Energy Technology (i-MEET) Wei Meng Institute Materials for Electronics and Energy Technology (i-MEET) Kaicheng Zhang Institute Materials for Electronics and Energy Technology (i-MEET) Chao Liu Institute Materials for Electronics and Energy Technology (i-MEET) Andres Osvet Institute Materials for Electronics and Energy Technology (i-MEET) Ning Li Institute Materials for Electronics and Energy Technology (i-MEET) Marcus Halik Professur für Werkstoffwissenschaften (Polymerwerkstoffe) Wolfgang Heiß Professur für Werkstoffwissenschaften (lösungsprozessierte Halbleitermaterialien) Yicheng Zhao Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Helmholtz-Institut Erlangen-Nürnberg für Erneuerbare Energien (HI-ERN) DE Germany (DE)

How to cite

APA:

Zhang, J., Wu, J., Langner, S., Zhao, B., Xie, Z., Hauch, J.,... Brabec, C. (2022). Exploring the Steric Hindrance of Alkylammonium Cations in the Structural Reconfiguration of Quasi-2D Perovskite Materials Using a High-throughput Experimental Platform. Advanced Functional Materials. https://dx.doi.org/10.1002/adfm.202207101

MLA:

Zhang, Jiyun, et al. "Exploring the Steric Hindrance of Alkylammonium Cations in the Structural Reconfiguration of Quasi-2D Perovskite Materials Using a High-throughput Experimental Platform." Advanced Functional Materials (2022).

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