| 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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Zatterin, Edoardo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024Full Picture of Lattice Deformation in a Ge<sub>1 − x</sub>Sn<sub>x</sub> Micro‐Disk by 5D X‐ray Diffraction Microscopycitations
- 2024The Interplay between Strain, Sn Content, and Temperature on Spatially Dependent Bandgap in Ge1−xSnx Microdiskscitations
- 2024Full Picture of Lattice Deformation in a Ge 1-x Sn x Micro‐Disk by 5D X‐ray Diffraction Microscopycitations
- 2024The Lattice Strain Distribution in GexSn1-x Micro-Disks Investigated at the Sub 100-nm Scale
- 2023Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructurescitations
- 2023The Interplay between Strain, Sn Content, and Temperature on Spatially Dependent Bandgap in Ge<sub>1−<i>x</i></sub>Sn<sub><i>x</i></sub> Microdiskscitations
- 2022In situ imaging of temperature-dependent fast and reversible nanoscale domain switching in a single-crystal perovskitecitations
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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.