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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Divitini, Giorgio
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (37/37 displayed)
- 2024Decoupled High‐Mobility Graphene on Cu(111)/Sapphire via Chemical Vapor Depositioncitations
- 2024Exogenous Metal Cations in the Synthesis of CsPbBr3 Nanocrystals and Their Interplay with Tertiary Aminescitations
- 2024Exogenous Metal Cations in the Synthesis of CsPbBr3 Nanocrystals and Their Interplay with Tertiary Aminescitations
- 2024Heterostructures via a Solution‐Based Anion Exchange in Microcrystalline 2D Layered Metal‐Halide Perovskitescitations
- 2024Dry synthesis of bi-layer nanoporous metal films as plasmonic metamaterialcitations
- 2023Photogeneration of spin quintet triplet–triplet excitations in DNA-assembled pentacene stackscitations
- 2023Photogeneration of Spin Quintet Triplet–Triplet Excitations in DNA-Assembled Pentacene Stacks
- 2023Photogeneration of Spin Quintet Triplet-Triplet Excitations in DNA-Assembled Pentacene Stacks.
- 2022One Hundred-Nanometer-Sized CsPbBr3/m-SiO2 Composites Prepared via Molten-Salts Synthesis are Optimal Green Phosphors for LCD Display Devicescitations
- 2022Sol-gel processing of a covalent organic framework for the generation of hierarchically porous monolithic adsorbentscitations
- 2022Sodium Diffuses from Glass Substrates through P1 Lines and Passivates Defects in Perovskite Solar Modules
- 2021Beyond 17% stable perovskite solar module via polaron arrangement of tuned polymeric hole transport layercitations
- 2021Using pulsed mode scanning electron microscopy for cathodoluminescence studies on hybrid perovskite films
- 2021Using pulsed mode scanning electron microscopy for cathodoluminescence studies on hybrid perovskite films
- 2021Stepwise collapse of a giant pore metal-organic frameworkcitations
- 2021Mixed hierarchical local structure in a disordered metal–organic frameworkcitations
- 2021Nanometric Chemical Analysis of Beam-Sensitive Materials: A Case Study of STEM-EDX on Perovskite Solar Cells.
- 2020Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals.
- 2020Performance-limiting nanoscale trap clusters at grain junctions in halide perovskites.
- 2020Pair suppression caused by mosaic-twist defects in superconducting Sr2RuO4 thin-films prepared using pulsed laser depositioncitations
- 2020Ion Migration‐Induced Amorphization and Phase Segregation as a Degradation Mechanism in Planar Perovskite Solar Cells
- 2019High throughput production of single-wall carbon nanotube fibres independent of sulfur-source.
- 2019High throughput production of single-wall carbon nanotube fibres independent of sulfur-source.
- 2018Maximizing and stabilizing luminescence from halide perovskites with potassium passivationcitations
- 2018Maximizing and stabilizing luminescence from halide perovskites with potassium passivation
- 2018Potassium- and Rubidium-Passivated Alloyed Perovskite Films: Optoelectronic Properties and Moisture Stability.
- 2018Core-Shell Electrospun Polycrystalline ZnO Nanofibers for Ultra-Sensitive NO2 Gas Sensing.
- 2018Dedoping of Lead Halide Perovskites Incorporating Monovalent Cations.
- 2018Exciton-Phonon Interactions Govern Charge-Transfer-State Dynamics in CdSe/CdTe Two-Dimensional Colloidal Heterostructures.
- 2017Tuning the properties of a black TiO<sub>2</sub>-Ag visible light photocatalyst produced by rapid one-pot chemical reductioncitations
- 2017Tuning the properties of a black TiO 2 -Ag visible light photocatalyst produced by rapid one-pot chemical reduction
- 2017Chemical vapour deposition of freestanding sub-60 nm graphene gyroidscitations
- 2016In Situ Heat-Induced Replacement of GaAs Nanowires by Au.
- 2015Interface and Composition Analysis on Perovskite Solar Cells.
- 2015Interface and Composition Analysis on Perovskite Solar Cellscitations
- 2015Local Versus Long-Range Diffusion Effects of Photoexcited States on Radiative Recombination in Organic-Inorganic Lead Halide Perovskites.
- 2011Flexible and biocompatible microelectrode arrays fabricated by supersonic cluster beam deposition on SU-8citations
Places of action
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article
Heterostructures via a Solution‐Based Anion Exchange in Microcrystalline 2D Layered Metal‐Halide Perovskites
Abstract
<jats:title>Abstract</jats:title><jats:p>Layered perovskites consist of stacks of inorganic semiconducting metal halide octahedra lattices sandwiched between organic layers with typically dielectric behavior. The in‐plane confinement of electrical carriers in such two‐dimensional metal halide perovskites drives a large range of appealing electronic properties, such as strong exciton binding, anisotropic charge diffusion, and directionality in polarization. Heterostructures can provide additional control on charge carrier diffusion and localization, and in‐plane heterojunctions are particularly attractive because of the high charge mobility in this direction. Here, we demonstrate a versatile solution‐based approach to fabricate in‐plane heterostructures with different halide composition in two‐dimesional lead‐halide perovskite microscrystals. The exchange reaction leads to spatially separated halide phases with different band gap and light emission. The exposure of microcrystals to different halide salts in solution leads to a core‐shell heterostructure architecture. Interestingly, the composition of the exchanged phase and the morphology of the phase boundary depends on the exchange route. For Br to I we observe a rugged boundary and a relatively pure exchanged crystal phase, while I to Br leads to alloyed phases in the exchanged region and a smooth interface. The different reaction mechanisms can be related to the preferred localisation of the halides at the equatorial or axial octahedra positions that either leads to dissolution and recrystallization of the octahedra lattice, or allows for ion diffusion within the lattice. These detailed insights on the ion exchange processes in layered perovskites will stimulate the development of heterostructures that can be tailored for different applications such as photocatalysis, energy storage, and light emission.</jats:p><jats:p>This article is protected by copyright. All rights reserved</jats:p>