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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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Rogach, Andrey
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Red-Emitting CsPbI3 /ZnSe Colloidal Nanoheterostructures with Enhanced Optical Properties and Stabilitycitations
- 2024Near-infrared two-photon excited photoluminescence from Yb3+-doped CsPbClxBr3−x perovskite nanocrystals embedded into amphiphilic silica microspherescitations
- 2024Micrometer-Resolution Fluorescence and Lifetime Mappings of CsPbBr 3 Nanocrystal Films Coupled with a TiO 2 Grating
- 2023Exploring CsPbX<sub>3</sub> (X = Cl, Br, I) Perovskite Nanocrystals in Amorphous Oxide Glasses: Innovations in Fabrication and Applicationscitations
- 2021Composite Nanospheres Comprising Luminescent Carbon Dots Incorporated into a Polyhedral Oligomeric Silsesquioxane Matrixcitations
- 2021Room temperature fabrication of stable, strongly luminescent Dion–Jacobson tin bromide perovskite microcrystals achieved through use of primary alcoholscitations
- 2021Carbon Nanoparticles as Versatile Auxiliary Components of Perovskite-Based Optoelectronic Devicescitations
- 2020Tunable Mie Resonances of Tin-based Iodide Perovskite Islandlike Films with Enhanced Infrared Photoluminescencecitations
- 2020Influence of the solvent environment on luminescent centers within carbon dotscitations
- 2020Strongly Luminescent Composites Based on Carbon Dots Embedded in a Nanoporous Silicate Glasscitations
- 2020Stable Luminescent Composite Microspheres Based on Porous Silica with Embedded CsPbBr3 Perovskite Nanocrystalscitations
- 2019Synthesis and energy structure of optical transitions of the nitrogen and sulfur co-doped carbon dots
- 2019Using Polar Alcohols for the Direct Synthesis of Cesium Lead Halide Perovskite Nanorods with Anisotropic Emissioncitations
- 2018Influence of molecular fluorophores on the research field of chemically synthesized carbon dotscitations
- 2016Photo-Aligned Quantum Rod Dispersed Liquid Crystal Polymer Filmscitations
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article
Near-infrared two-photon excited photoluminescence from Yb3+-doped CsPbClxBr3−x perovskite nanocrystals embedded into amphiphilic silica microspheres
Abstract
Nonlinear absorption of metal-halide perovskite nanocrystals (NCs) makes them an ideal candidate for applications which require multiphoton-excited photoluminescence. By doping perovskite NCs with lanthanides, their emission can be extended into the near-infrared (NIR) spectral region. We demonstrate how the combination of Yb<sup>3+</sup> doping and bandgap engineering of cesium lead halide perovskite NCs performed by anion exchange (from Cl<sup>−</sup> to Br<sup>−</sup>) leads to efficient and tunable emitters that operate under two-photon excitation in the NIR spectral region. By optimizing the anion composition, Yb<sup>3+</sup>-doped CsPbCl<sub><i>x</i></sub>Br<sub>3−<i>x</i></sub> NCs exhibited high values of two-photon absorption cross-section reaching 2.3 × 10<sup>5</sup> GM, and displayed dual-band emission located both in the visible (407-493 nm) and NIR (985 nm). With a view of practical applications of bio-visualisation in the NIR spectral range, these NCs were embedded into silica microspheres which were further wrapped with amphiphilic polymer shells to ensure their water-compatibility. The resulting microspheres with embedded NCs could be easily dispersed in both toluene and water, while still exhibiting a dual-band emission in visible and NIR under both one- and two-photon excitation conditions. © The Royal Society of Chemistry 2024.<br/>.