| People | Locations | Statistics |
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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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Trizio, Luca De
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Exogenous Metal Cations in the Synthesis of CsPbBr3 Nanocrystals and Their Interplay with Tertiary Aminescitations
- 2023Light Emission from Low‐Dimensional Pb‐Free Perovskite‐Related Metal Halide Nanocrystalscitations
- 2023Lead‐Free Halide Perovskite Materials and Optoelectronic Devices: Progress and Prospectivecitations
- 2022One Hundred-Nanometer-Sized CsPbBr3/m-SiO2 Composites Prepared via Molten-Salts Synthesis are Optimal Green Phosphors for LCD Display Devicescitations
- 2022Exploiting the Transformative Features of Metal Halides for the Synthesis of CsPbBr3@SiO2 Core-Shell Nanocrystalscitations
- 2020Transforming colloidal Cs4PbBr6 nanocrystals with poly(maleic anhydride-alt-1-octadecene) into stable CsPbBr3 perovskite emitters through intermediate heterostructurescitations
- 2020Developing Lattice Matched ZnMgSe Shells on InZnP Quantum Dots for Phosphor Applicationscitations
- 2020Cs3Cu4In2Cl13 Nanocrystalscitations
- 2019Stable Ligand Coordination at the Surface of Colloidal CsPbBr3 Nanocrystalscitations
- 2018Colloidal Synthesis of Double Perovskite Cs2AgInCl6 and Mn-Doped Cs2AgInCl6 Nanocrystalscitations
- 2018Ab initio structure determination of Cu2- xTe plasmonic nanocrystals by precession-assisted electron diffraction tomography and HAADF-STEM imagingcitations
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article
Transforming colloidal Cs4PbBr6 nanocrystals with poly(maleic anhydride-alt-1-octadecene) into stable CsPbBr3 perovskite emitters through intermediate heterostructures
Abstract
<p>The preparation of strongly emissive CsPbBr<sub>3</sub> perovskite nanocrystals with robust surface passivation is a challenge in the field of lead halide perovskite nanomaterials. We report an approach to prepare polymer-capped CsPbBr<sub>3</sub> perovskite nanocrystals by reacting oleylammonium/oleate-capped Cs<sub>4</sub>PbBr<sub>6</sub> nanocrystals with poly(maleic anhydride-alt-1-octadecene) (PMAO). PMAO contains succinic anhydride units that are reactive towards the oleylamine species present on the Cs<sub>4</sub>PbBr<sub>6</sub> nanocrystals' surface and produces polysuccinamic acid, which, in turn, triggers the Cs<sub>4</sub>PbBr<sub>6</sub> to CsPbBr<sub>3</sub> conversion. The transformation occurs through the formation of Cs<sub>4</sub>PbBr<sub>6</sub>-CsPbBr<sub>3</sub> heterostructures as intermediates, which are captured because of the mild reactivity of PMAO and are investigated by high-resolution electron microscopy. The Cs<sub>4</sub>PbBr<sub>6</sub>-CsPbBr<sub>3</sub> heterostructures demonstrate a dual emission at cryogenic temperature with an indication of the energy transfer from Cs<sub>4</sub>PbBr<sub>6</sub> to CsPbBr<sub>3</sub>. The fully-transformed CsPbBr<sub>3</sub> NCs have high photoluminescence quantum yield and enhanced colloidal stability, which we attribute to the adhesion of polysuccinamic acid to the NC surface through its multiple functional groups in place of oleate and alkylammonium ligands. The PMAO-induced transformation of Cs<sub>4</sub>PbBr<sub>6</sub> NCs opens up a strategy for the chemical modification of metal halide NCs initially passivated with nucleophilic amines.</p>