| 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
Quasi-epitaxial Metal-Halide Perovskite Ligand Shells on PbS Nanocrystals
Abstract
Epitaxial growth techniques enable nearly defect free heterostructures with coherent interfaces, which are of utmost importance for high performance electronic devices. While high-vacuum technology-based growth techniques are state-of-the art, here we pursue a purely solution processed approach to obtain nanocrystals with eptaxially coherent and quasi-lattice matched inorganic ligand shells. Octahedral metal-halide clusters, respectively 0-dimensional perovskites, were employed as ligands to match the coordination geometry of the PbS cubic rock-salt lattice. Different clusters (CH3NH3+)(6–x)[M(x+)Hal6](6–x)– (Mx+ = Pb(II), Bi(III), Mn(II), In(III), Hal = Cl, I) were attached to the nanocrystal surfaces via a scalable phase transfer procedure. The ligand attachment and coherence of the formed PbS/ligand core/shell interface was confirmed by combining the results from transmission electron microscopy, small-angle X-ray scattering, nuclear magnetic resonance spectroscopy and powder X-ray diffraction. The lattice mismatch between ligand shell and nanocrystal core plays a key role in performance. In photoconducting devices the best performance (detectivity of 2 × 1011 cm Hz 1/2/W with > 110 kHz bandwidth) was obtained with (CH3NH3)3BiI6 ligands, providing the smallest relative lattice mismatch of ca. −1%. PbS nanocrystals with such ligands exhibited in millimeter sized bulk samples in the form of pressed pellets a relatively high carrier mobility for nanocrystal solids of ∼1.3 cm2/(V s), a carrier lifetime of ∼70 μs, and a low residual carrier concentration of 2.6 × 1013 cm–3. Thus, by selection of ligands with appropriate geometry and bond lengths optimized quasi-epitaxial ligand shells were formed on nanocrystals, which are beneficial for applications in optoelectronics.