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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
Exogenous Metal Cations in the Synthesis of CsPbBr3 Nanocrystals and Their Interplay with Tertiary Amines
Abstract
<p>Current syntheses of CsPbBr<sub>3</sub> halide perovskite nanocrystals (NCs) rely on overstoichiometric amounts of Pb<sup>2+</sup> precursors, resulting in unreacted lead ions at the end of the process. In our synthesis scheme of CsPbBr<sub>3</sub> NCs, we replaced excess Pb<sup>2+</sup> with different exogenous metal cations (M) and investigated their effect on the synthesis products. These cations can be divided into two groups: group 1 delivers monodisperse CsPbBr<sub>3</sub> cubes capped with oleate species (as for the case when Pb<sup>2+</sup> is used in excess) and with a photoluminescence quantum yield (PLQY) as high as 90% with some cations (for example with M = In<sup>3+</sup>); group 2 yields irregularly shaped CsPbBr<sub>3</sub> NCs with broad size distributions. In both cases, the addition of a tertiary ammonium cation (didodecylmethylammonium, DDMA<sup>+</sup>) during the synthesis, after the nucleation of the NCs, reshapes the NCs to monodisperse truncated cubes. Such NCs feature a mixed oleate/DDMA<sup>+</sup> surface termination with PLQY values of up to 97%. For group 1 cations this happens only if the ammonium cation is directly added as a salt (DDMA-Br), while for group 2 cations this happens even if the corresponding tertiary amine (DDMA) is added, instead of DDMA-Br. This is attributed to the fact that only group 2 cations can facilitate the protonation of DDMA by the excess oleic acid present in the reaction environment. In all cases studied, the incorporation of M cations is marginal, and the reshaping of the NCs is only transient: if the reactions are run for a long time, the truncated cubes evolve to cubes.</p>