On the Shape-Selected, Ligand-Free Preparation of Hybrid Perovskite (CH3NH3PbBr3) Microcrystals and Their Suitability as Model-System for Single-Crystal Studies of Optoelectronic Properties

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Authors

  • Ulrich Johannes Bahnmüller
  • Henning Kuper
  • Tobias Seewald
  • Yenal Yalcinkaya
  • Jörg August Becker
  • Lukas Schmidt-Mende
  • Stefan A. L. Weber
  • Sebastian Polarz

External Research Organisations

  • University of Konstanz
  • Max Planck Institute for Polymer Research
  • Johannes Gutenberg University Mainz
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Details

Original languageEnglish
Article number3057
JournalNanomaterials
Volume11
Issue number11
Publication statusPublished - 13 Nov 2021

Abstract

Hybrid perovskite materials are one of the most promising candidates for optoelectronic applications, e.g., solar cells and LEDs, which can be produced at low cost compared to established materials. Although this field of research has seen a huge upsurge in the past decade, there is a major lack in understanding the underlying processes, such as shape-property relationships and the role of defects. Our aerosol-assisted synthesis pathway offers the possibility to obtain methylammonium lead bromide (MAPbBr3) microcrystals from a liquid single source precursor. The differently shaped particles are aligned on several substrates, without using a directing agent or other additives. The obtained particles show good stability under dry conditions. This allows us to characterize these materials and their pure surfaces at the single-crystal level using time- and spatially resolved methods, without any influences of size-dependent effects. By optimizing the precursor for the aerosol process, we were able to eliminate any purification steps and use the materials as processed. In addition, we performed theoretical simulations to deepen the understanding of the underlying processes in the formation of the different crystal facets and their specific properties. The model system presented provides insights into the shape-related properties of MAPbBr3 single crystals and their directed but ligand-free synthesis.

Keywords

    Aerosol synthesis, Hybrid perovskites (HYPE), Methylammonium lead bromide, Optoelectronic properties of MAPbBr, Shape-related properties

ASJC Scopus subject areas

Cite this

On the Shape-Selected, Ligand-Free Preparation of Hybrid Perovskite (CH3NH3PbBr3) Microcrystals and Their Suitability as Model-System for Single-Crystal Studies of Optoelectronic Properties. / Bahnmüller, Ulrich Johannes; Kuper, Henning; Seewald, Tobias et al.
In: Nanomaterials, Vol. 11, No. 11, 3057, 13.11.2021.

Research output: Contribution to journalArticleResearchpeer review

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abstract = "Hybrid perovskite materials are one of the most promising candidates for optoelectronic applications, e.g., solar cells and LEDs, which can be produced at low cost compared to established materials. Although this field of research has seen a huge upsurge in the past decade, there is a major lack in understanding the underlying processes, such as shape-property relationships and the role of defects. Our aerosol-assisted synthesis pathway offers the possibility to obtain methylammonium lead bromide (MAPbBr3) microcrystals from a liquid single source precursor. The differently shaped particles are aligned on several substrates, without using a directing agent or other additives. The obtained particles show good stability under dry conditions. This allows us to characterize these materials and their pure surfaces at the single-crystal level using time- and spatially resolved methods, without any influences of size-dependent effects. By optimizing the precursor for the aerosol process, we were able to eliminate any purification steps and use the materials as processed. In addition, we performed theoretical simulations to deepen the understanding of the underlying processes in the formation of the different crystal facets and their specific properties. The model system presented provides insights into the shape-related properties of MAPbBr3 single crystals and their directed but ligand-free synthesis.",
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T1 - On the Shape-Selected, Ligand-Free Preparation of Hybrid Perovskite (CH3NH3PbBr3) Microcrystals and Their Suitability as Model-System for Single-Crystal Studies of Optoelectronic Properties

AU - Bahnmüller, Ulrich Johannes

AU - Kuper, Henning

AU - Seewald, Tobias

AU - Yalcinkaya, Yenal

AU - Becker, Jörg August

AU - Schmidt-Mende, Lukas

AU - Weber, Stefan A. L.

AU - Polarz, Sebastian

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PY - 2021/11/13

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KW - Hybrid perovskites (HYPE)

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KW - Optoelectronic properties of MAPbBr

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