One-Step Aerosol Synthesis of Thiocyanate Passivated Hybrid Perovskite Microcrystals

Impact of (Pseudo-)Halide Additives on Crystallization and Access to a Novel Binary Model

verfasst von: Ulrich J. Bahnmüller, Yaşar Krysiak, Tobias Seewald, Yenal Yalçinkaya, Denis Pluta, Lukas Schmidt-Mende, Stefan A.L. Weber, Sebastian Polarz
Abstract: Hybrid Perovskite materials have gone through an astonishing development due to their unique optoelectronic behavior, leading to the creation of a wide range of synthetic strategies. As the materials’ surface is found to play a crucial role with respect to the properties, e.g. hydration, stability and carrier mobilities, considerable efforts have been made to optimize the surface through various approaches. Especially the passivation of the perovskite surface attracted a lot of attention in this field, often resulting in more complex, multi-step synthetic processes. In this study, a simple one-step aerosol-assisted synthetic approach is presented to obtain thiocyanate (SCN) passivated single-crystal MAPbBr₃ microcrystals. To elucidate the role of the additive in the crystallization process, mixed (pseudo-)halide precursors are systematically investigated. The as processed, passivated microcrystals exhibit enhanced stability and charge carrier lifetimes. Additionally, a decrease in surface photovoltage, attributed to the presence of the SCN additive, is observed. Furthermore, the aerosol process is further developed resulting in a novel binary system containing MAPbBr₃-SCN perovskite microcrystals and Au nanostructures. This system serves as a promising model for further investigations into potential interactions between plasmonic and semiconducting materials, with initial results indicating prolonged charge carrier lifetimes.
Organisationseinheit(en): Institut für Anorganische Chemie
Institut für Physikalische Chemie und Elektrochemie
Externe Organisation(en): Universität Konstanz
Max-Planck-Institut für Polymerforschung
Universität Stuttgart
Typ: Artikel
Journal: Particle and Particle Systems Characterization
Anzahl der Seiten: 12
ISSN: 0934-0866
Publikationsdatum: 02.09.2024
Publikationsstatus: Elektronisch veröffentlicht (E-Pub)
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Chemie, Allgemeine Materialwissenschaften, Physik der kondensierten Materie
Elektronische Version(en): https://doi.org/10.1002/ppsc.202400132 (Zugang: Offen)
https://doi.org/10.1002/ppsc.202400132 (Zugang: Unbekannt)

BibTeX

@article{ecbf6dea03b141fabc647f3afd68a3ef,
title = "One-Step Aerosol Synthesis of Thiocyanate Passivated Hybrid Perovskite Microcrystals: Impact of (Pseudo-)Halide Additives on Crystallization and Access to a Novel Binary Model",
abstract = "Hybrid Perovskite materials have gone through an astonishing development due to their unique optoelectronic behavior, leading to the creation of a wide range of synthetic strategies. As the materials{\textquoteright} surface is found to play a crucial role with respect to the properties, e.g. hydration, stability and carrier mobilities, considerable efforts have been made to optimize the surface through various approaches. Especially the passivation of the perovskite surface attracted a lot of attention in this field, often resulting in more complex, multi-step synthetic processes. In this study, a simple one-step aerosol-assisted synthetic approach is presented to obtain thiocyanate (SCN) passivated single-crystal MAPbBr3 microcrystals. To elucidate the role of the additive in the crystallization process, mixed (pseudo-)halide precursors are systematically investigated. The as processed, passivated microcrystals exhibit enhanced stability and charge carrier lifetimes. Additionally, a decrease in surface photovoltage, attributed to the presence of the SCN additive, is observed. Furthermore, the aerosol process is further developed resulting in a novel binary system containing MAPbBr3-SCN perovskite microcrystals and Au nanostructures. This system serves as a promising model for further investigations into potential interactions between plasmonic and semiconducting materials, with initial results indicating prolonged charge carrier lifetimes.",
keywords = "Au nanoparticles, crystallization kinetics, hybrid perovskite microcrystals, one-step synthesis, surface passivation",
author = "Bahnm{\"u}ller, {Ulrich J.} and Ya{\c s}ar Krysiak and Tobias Seewald and Yenal Yal{\c c}inkaya and Denis Pluta and Lukas Schmidt-Mende and Weber, {Stefan A.L.} and Sebastian Polarz",
note = "Publisher Copyright: {\textcopyright} 2024 The Author(s). Particle & Particle Systems Characterization published by Wiley-VCH GmbH.",
year = "2024",
month = sep,
day = "2",
doi = "10.1002/ppsc.202400132",
language = "English",
journal = "Particle and Particle Systems Characterization",
issn = "0934-0866",
publisher = "Wiley-VCH Verlag",
}