Ruddlesden–Popper Hybrid Lead Bromide Perovskite Nanosheets of Phase Pure n=2: Stabilized Colloids Stored in the Solid State

Cevallos-Toledo RB, Rosa-Pardo I, Arenal R, Oestreicher V, Fickert M, Abellan G, Galian RE, Perez-Prieto J (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Angewandte Chemie International Edition Wiley

DOI: 10.1002/anie.202113451

Abstract

Ruddlesden-Popper lead halide perovskite (RP-LHP) nano-nanostructures can be regarded as self-assembled quantum wells or superlattices of 3D perovskites with an intrinsic quantum well thickness of a single or a few (n=2-4) lead halide layers; the quantum wells are separated by organic layers. They can be scaled down to a single quantum well dimension. Here, the preparation of highly (photo)chemical and colloidal stable hybrid LHP nanosheets (NSs) of ca. 7.4 μm lateral size and 2.5 nm quantum well height (thereby presenting a deep blue emission at ca. 440 nm), is reported for the first time. The NSs are close-lying and they even interconnect when deposited on a substrate. Their synthesis is based on the use of the p-toluenesulfonic acid/dodecylamine (pTS/DDA) ligand pair and their (photo)chemical stability and photoluminescence is enhanced by adding EuBr2 nanodots (EuNDs). Strikingly, they can be preserved as a solid and stored for at least one year. The blue emissive colloid can be recovered from the solid as needed by simply dispersing the powder in toluene and then using it to prepare solid films, making them very promising candidates for manufacturing devices.

Authors with CRIS profile

Michael Fickert Lehrstuhl für Organische Chemie II

Involved external institutions

University of València / Universitat de València ES Spain (ES) Universidad de Zaragoza ES Spain (ES)

How to cite

APA:

Cevallos-Toledo, R.B., Rosa-Pardo, I., Arenal, R., Oestreicher, V., Fickert, M., Abellan, G.,... Perez-Prieto, J. (2021). Ruddlesden–Popper Hybrid Lead Bromide Perovskite Nanosheets of Phase Pure n=2: Stabilized Colloids Stored in the Solid State. Angewandte Chemie International Edition. https://dx.doi.org/10.1002/anie.202113451

MLA:

Cevallos-Toledo, Rita B., et al. "Ruddlesden–Popper Hybrid Lead Bromide Perovskite Nanosheets of Phase Pure n=2: Stabilized Colloids Stored in the Solid State." Angewandte Chemie International Edition (2021).

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