| 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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Wallentin, Jesper
Lund University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Structural and chemical properties of anion exchanged CsPb(Br<sub>(1−x)</sub>Cl<sub> x </sub>)<sub>3</sub> heterostructured perovskite nanowires imaged by nanofocused x-rayscitations
- 2024Oxygen-defective electrostrictors for soft electromechanicscitations
- 2024Oxygen-defective electrostrictors for soft electromechanicscitations
- 2024Ferroelectricity in Ultrathin HfO2-Based Films by Nanosecond Laser Annealingcitations
- 2023Beyond ray optics absorption of light in CsPbBr 3 perovskite nanowire arrays studied experimentally and with wave optics modellingcitations
- 2023Beyond ray optics absorption of light in CsPbBr3perovskite nanowire arrays studied experimentally and with wave optics modellingcitations
- 2022Perovskite-Compatible Electron-Beam-Lithography Process Based on Nonpolar Solvents for Single-Nanowire Devicescitations
- 2022Optical demonstration of crystallography and reciprocal space using laser diffraction from Au microdisc arrayscitations
- 2022In situ imaging of temperature-dependent fast and reversible nanoscale domain switching in a single-crystal perovskitecitations
- 2022Single-Crystalline Perovskite Nanowire Arrays for Stable X-ray Scintillators with Micrometer Spatial Resolutioncitations
- 2022Free-Standing Metal Halide Perovskite Nanowire Arrays with Blue-Green Heterostructurescitations
- 2021Inducing ferroelastic domains in single-crystal CsPbBr3 perovskite nanowires using atomic force microscopycitations
- 2021Inducing ferroelastic domains in single-crystal CsPbBr3 perovskite nanowires using atomic force microscopycitations
- 2021Vertically Aligned CsPbBr3 Nanowire Arrays with Template-Induced Crystal Phase Transition and Stabilitycitations
- 2020In Situ Imaging of Ferroelastic Domain Dynamics in CsPbBr3Perovskite Nanowires by Nanofocused Scanning X-ray Diffractioncitations
- 2020In situ imaging of ferroelastic domain dynamics in CsPbBr3perovskite nanowires by nanofocused scanning X-ray diffractioncitations
- 2017Simulated sample heating from a nanofocused X-ray beamcitations
- 2015Simultaneous high-resolution scanning Bragg contrast and ptychographic imaging of a single solar cell nanowirecitations
- 2013Transparently Wrap-Gated Semiconductor Nanowire Arrays For Studies Of Gate-Controlled Photoluminescencecitations
- 2011Dynamics of extremely anisotropic etching of InP nanowires by HClcitations
- 2011Doping profile of InP nanowires directly imaged by photoemission electron microscopycitations
- 2010High Performance Single Nanowire Tunnel Diodes
Places of action
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article
In situ imaging of temperature-dependent fast and reversible nanoscale domain switching in a single-crystal perovskite
Abstract
Metal halide perovskites exhibit a rich crystal structure, with multiple phases as well as ferroelastic domains, which is crucial for the optical and electrical properties. The average crystal phase-transition temperatures can be shifted by size, strain, or defects, but it is not clear whether such differences can also appear locally within a single crystal. The experimental study of domain dynamics within nanocrystals is challenging and requires a method capable of probing crystal lattice variations with both high spatial and temporal resolution. Here, we show that in situ full-field diffraction x-ray microscopy can be used to image domains in a single crystal CsPbBr3 nanoplatelet as the temperature traverses the orthorhombic to tetragonal phase transition, at 150 nm spatial resolution and 6 s time resolution. The images reveal sudden domain pattern changes faster than the temporal resolution. Surprisingly, we observe substantial local variations during heating, with domain changes occurring at different temperatures within the single crystal. The nanoplatelet exhibits a high-temperature domain pattern completely different from the low-temperature one, but both patterns are reproducible, and we reversibly switch between them in multiple cycles. These results demonstrate that single CsPbBr3 crystals can exhibit substantial local variation of their basic crystal properties.