| 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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Yakunin, Sergii
ETH Zürich Foundation
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 2023Intrinsic formamidinium tin iodide nanocrystals by suppressing the Sn(IV) impurities
- 2023Stable perovskite single-crystal X-ray imaging detectors with single-photon sensitivitycitations
- 2023Stable perovskite single-crystal X-ray imaging detectors with single-photon sensitivitycitations
- 2022Intrinsic formamidinium tin iodide nanocrystals by suppressing the Sn(IV) impurities
- 2022Amphiphilic polymer co-network: a versatile matrix for tailoring the photonic energy transfer in wearable energy harvesting devicescitations
- 2022Assessing the drawbacks and benefits of ion migration in lead halide perovskitescitations
- 2022Colloidal CsPbX 3 nanocrystals with thin metal oxide gel coatingscitations
- 2022Single‐Crystal Perovskite Solar Cells Exhibit Close to Half A Millimeter Electron‐Diffusion Lengthcitations
- 2021Lone-pair-induced structural ordering in the mixed-valent 0D metal-halides Rb 23 Bi III x Sb III 7- x Sb V 2 Cl 54 (0 ≤ x ≤ 7)citations
- 2021Hybrid 0D antimony halides as air-stable luminophores for high-spatial-resolution remote thermographycitations
- 2020Bright blue and freen luminescence of Sb(III) in double perovskite Cs 2 MInCl 6 (M = Na, K) matricescitations
- 2020Supramolecular approach for fine-tuning of the bright luminescence from zero-dimensional antimony(III) halidescitations
- 2020Fast neutron imaging with semiconductor nanocrystal scintillatorscitations
- 2019Microcarrier-assisted inorganic shelling of lead halide perovskite nanocrystalscitations
- 2019Guanidinium and mixed cesium–guanidinium Tin(II) bromides: effects of quantum confinement and out-of-plane octahedral tiltingcitations
- 2019High-resolution remote thermometry and thermography using luminescent low-dimensional tin-halide perovskitescitations
- 2018Highly emissive self-trapped excitons in fully inorganic zero-dimensional tin halidescitations
- 2017Quasi-epitaxial Metal-Halide Perovskite Ligand Shells on PbS Nanocrystalscitations
- 2017Non-dissipative internal optical filtering with solution-grown perovskite single crystals for full-colour imagingcitations
- 2017Aggregation-induced emission in lamellar solids of colloidal perovskite quantum wellscitations
- 2017Aggregation-induced emission in lamellar solids of colloidal perovskite quantum wellscitations
- 2017Luminescent and photoconductive layered lead halide perovskite compounds comprising mixtures of cesium and guanidinium cationscitations
- 2016Polar-solvent-free colloidal synthesis of highly luminescent alkylammonium lead halide perovskite nanocrystalscitations
- 2016Harnessing defect-tolerance at the nanoscale: highly luminescent lead halide perovskite nanocrystals in mesoporous silica matrixescitations
- 2015Random Lasing with Systematic Threshold Behavior in Films of CdSe/CdS Core/Thick-Shell Colloidal Quantum Dotscitations
- 2015Nanocrystals of cesium lead halide perovskites (CsPbX 3 , X = Cl, Br, and I): novel optoelectronic materials showing bright emission with wide color gamutcitations
- 2015Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskitescitations
- 2015Iodide-Capped PbS Quantum Dots: Full Optical Characterization of a Versatile Absorbercitations
- 2015Fast anion-exchange in highly luminescent nanocrystals of cesium lead halide perovskites (CsPbX 3 , X = Cl, Br, I)citations
- 2015Detection of X-ray photons by solution-processed lead halide perovskitescitations
- 2015Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites (vol 6, 8056, 2015)citations
- 2015Nanocrystals of cesium lead halide perovskites (CsPbX3, X=Cl, Br, and I):novel optoelectronic materials showing bright emission with wide color gamutcitations
- 2014Hydrogen-Bonded Organic Semiconductor Micro- And Nanocrystals: From Colloidal Syntheses to (Opto-)Electronic Devicescitations
- 2014Infrared emitting PbS nanocrystal solids through matrix encapsulationcitations
- 2014High Infrared Photoconductivity in Films of Arsenic-Sulfide-Encapsulated Lead-Sulfide Nanocrystalscitations
Places of action
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article
Aggregation-induced emission in lamellar solids of colloidal perovskite quantum wells
Abstract
The outstanding excitonic properties, including photoluminescence quantum yield (ηPL), of individual, quantum-confined semiconductor nanoparticles are often significantly quenched upon aggregation, representing the main obstacle toward scalable photonic devices. We report aggregation-induced emission phenomena in lamellar solids containing layer-controlled colloidal quantum wells (QWs) of hybrid organic-inorganic lead bromide perovskites, resulting in anomalously high solid-state ηPL of up to 94%. Upon forming the QW solids, we observe an inverse correlation between exciton lifetime and ηPL, distinct from that in typical quantum dot solid systems. Our multiscale theoretical analysis reveals that, in a lamellar solid, the collective motion of the surface organic cations is more restricted to orient along the [100] direction, thereby inducing a more direct bandgap that facilitates radiative recombination. Using the QW solids, we demonstrate ultrapure green emission by completely downconverting a blue gallium nitride light-emitting diode at room temperature, with a luminous efficacy higher than 90 lumen W−1 at 5000 cd m−2, which has never been reached in any nanomaterial assemblies by far.