| 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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Yin, Jun
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Anisotropic Superconducting Nb<sub>2</sub>CT<i><sub>x</sub></i> MXene Processed by Atomic Exchange at The Wafer Scalecitations
- 2023State of the Art and Prospects for Halide Perovskite Nanocrystals.
- 2023Zero-dimensional Cu(i)-based organometallic halide with green cluster-centred emission for high resolution X-ray imaging screenscitations
- 2021State of the art and prospects for halide perovskite nanocrystalscitations
- 2021State of the art and prospects for halide perovskite nanocrystalscitations
- 2020Large Polaron Self-Trapped States in Three-Dimensional Metal-Halide Perovskitescitations
- 2019Planar and van der Waals heterostructures for vertical tunnelling single electron transistorscitations
- 2018Ligand-Free Nanocrystals of Highly Emissive Cs4PbBr6 Perovskitecitations
- 2018Characterization of the Valence and Conduction Band Levels of n = 1 2D Perovskites: A Combined Experimental and Theoretical Investigationcitations
- 2018Growth of graphene on tantalum and its protective propertiescitations
- 2017Ultralow Self-Doping in 2D Hybrid Perovskite Single Crystalscitations
- 2017Ultralong Radiative States in Hybrid Perovskite Crystals: Compositions for Submillimeter Diffusion Lengthscitations
- 2015Surface electrical properties of stainless steel fibres: An AFM-based studycitations
- 2012Metal condensates for low-molecular-weight matrix-free laser desorption/ionizationcitations
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article
Ligand-Free Nanocrystals of Highly Emissive Cs4PbBr6 Perovskite
Abstract
Although ligands of long carbon chains are very crucial to form stable colloidal perovskite nanocrystals (NCs), they create a severe barrier for efficient charge injection or extraction in quantum-dot-based optoelectronics, such as light emitting diode or solar cell. Here, we report a new approach to preparing ligand-free perovskite NCs of CsPbBr, which retained high photoluminescence quantum yield (44%). Such an approach involves a polar solvent (acetonitrile) and two small molecules (ammonium acetate and cesium chloride), which replace the organic ligand and still protect the nanocrystals from dissolution. The successful removal of hydrophobic long ligands was evidenced by Fourier transform infrared spectroscopy, ζ potential analysis, and thermogravimetric analysis. Unlike conventional perovskite NCs that are extremely susceptible to polar solvents, the ligand-free CsPbBr NCs show robust resistance to polar solvents. Our ligand-free procedure opens many possibilities not only from a material hybridization perspective but also in optimizing charge injection and extraction in semiconductor quantum-dot-based optoelectronics applications.