| 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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Tamura, Nobumichi
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Local strain inhomogeneities during electrical triggering of a metal–insulator transition revealed by X-ray microscopycitations
- 2024An Integrated Deposition and Passivation Strategy for Controlled Crystallization of 2D/3D Halide Perovskite Filmscitations
- 2022Reactive binder and aggregate interfacial zones in the mortar of Tomb of Caecilia Metella concrete, 1C BCE, Romecitations
- 2021Out-of-equilibrium processes in crystallization of organic-inorganic perovskites during spin coatingcitations
- 2020Resistive contribution in electrical-switching experiments with antiferromagnetscitations
- 2019Lattice Strain Causes Non-Radiative Losses in Halide Perovskitescitations
- 2018Local Strain Heterogeneity Influences the Optoelectronic Properties of Halide Perovskites
- 2017Residual stress determination in oxide layers at different length scales combining Raman spectroscopy and X-ray diffraction: Application to chromia-forming metallic alloyscitations
- 2016In-situ characterization of highly reversible phase transformation by synchrotron X-ray Laue microdiffractioncitations
- 2016Controlling the Temperature and Speed of the Phase Transition of VO<sub>2</sub> Microcrystalscitations
- 2015Complementary use of monochromatic and white-beam X-ray micro-diffraction for the investigation of ancient materialscitations
- 2006White beam microdiffraction experiments for the determination of the local plastic behaviour of polycrystalscitations
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document
Local Strain Heterogeneity Influences the Optoelectronic Properties of Halide Perovskites
Abstract
Halide perovskites are promising semiconductors for inexpensive, high-performance optoelectronics. Despite a remarkable defect tolerance compared to conventional semiconductors, perovskite thin films still show substantial microscale heterogeneity in key properties such as luminescence efficiency and device performance1, 2, 3. This behavior has been attributed to spatial fluctuations in the population of sub-bandgap electronic states that act as trap-mediated non-radiative recombination sites.1, 4 However, the origin of the variations, trap states and extent of the defect tolerance remains a topic of debate, and a precise understanding is critical to the rational design of defect management strategies.5, 6 By combining scanning X-ray diffraction beamlines at two different synchrotrons with high-resolution transmission electron microscopy, we reveal levels of heterogeneity on the ten-micrometer scale (super-grains) and even ten-nanometer scale (sub-grain domains). We find that local strain is associated with enhanced defect concentrations, and correlations between the local structure and time-resolved photoluminescence reveal that these strain-related defects are the cause of non-radiative recombination. We reveal a direct connection between defect concentrations and non-radiative losses, as well as complex heterogeneity across multiple length scales, shedding new light on the presence and influence of structural defects in halide perovskites.