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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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Frohna, Kyle
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 2024Multimodal operando microscopy reveals that interfacial chemistry and nanoscale performance disorder dictate perovskite solar cell stability
- 2024Integration of metal meshes as transparent conducting electrodes into perovskite solar cellscitations
- 2023The Electronic Disorder Landscape of Mixed Halide Perovskitescitations
- 2023Template Pore Size and A‐Site Cation Management Dictate Luminescence Efficiency, Stability, and Wavelength in Confined Perovskite Nanostructures
- 2023The Electronic Disorder Landscape of Mixed Halide Perovskites.
- 2023Methylammonium-free co-evaporated perovskite absorbers with high radiation and UV tolerance: an option for in-space manufacturing of space-PV?citations
- 2022An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2022Local nanoscale phase impurities are degradation sites in halide perovskitescitations
- 2022The Electronic Disorde Landscape of Mixed Halide Perovskitescitations
- 2022Local nanoscale phase impurities are degradation sites in halide perovskites.
- 2022In-Situ and Operando Multimodal Microscopy of Metal Halide Perovskite Optoelectronic Devices
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysics.
- 2022Manipulating Color Emission in 2D Hybrid Perovskites by Fine Tuning Halide Segregation: A Transparent Green Emitter.
- 2022Understanding performance limiting interfacial recombination in pin Perovskite solar cellscitations
- 2022Stabilized tilted-octahedra halide perovskites inhibit local formation of performance-limiting phases.
- 2022Overcoming nanoscale inhomogeneities in thin-film perovskites via exceptional post-annealing grain growth for enhanced photodetectioncitations
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysics
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysicscitations
- 2021An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2021Multimodal Microscale Imaging of Textured Perovskite-Silicon Tandem Solar Cells.citations
- 2021Multimodal Microscale Imaging of Textured Perovskite-Silicon Tandem Solar Cells.
- 2021Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopycitations
- 2021Nanoscale chemical heterogeneity dominates the optoelectronic response of alloyed perovskite solar cellscitations
- 2021Stabilized tilted-octahedra halide perovskites inhibit local formation of performance-limiting phasescitations
- 2021Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy.
- 2021Proton radiation hardness of perovskite tandem photovoltaics
- 2021Manipulating Color Emission in 2D Hybrid Perovskites by Fine Tuning Halide Segregation: A Transparent Green Emittercitations
- 2020Unraveling the antisolvent dripping delay effect on the Stranski-Krastanov growth of CH3NH3PbBr3 thin films: a facile route for preparing a textured morphology with improved optoelectronic properties.
- 2020Proton Radiation Hardness of Perovskite Tandem Photovoltaicscitations
- 2020Structural and spectroscopic studies of a nanostructured silicon-perovskite interface.
- 2020Photodoping through local charge carrier accumulation in alloyed hybrid perovskites for highly efficient luminescencecitations
- 2020Proton radiation hardness of perovskite tandem photovoltaicscitations
- 2020Unraveling the antisolvent dripping delay effect on the Stranski-Krastanov growth of CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> thin films: a facile route for preparing a textured morphology with improved optoelectronic propertiescitations
- 2019Charge-Carrier Recombination in Halide Perovskitescitations
- 2019Charge-Carrier Recombination in Halide Perovskites.
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article
Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy
Abstract
With rapidly growing photoconversion efficiencies, hybrid perovskite solar cells have emerged as promising contenders for next generation, low-cost photovoltaic technologies. Yet, the presence of nanoscale defect clusters, that form during the fabrication process, remains critical to overall device operation, including efficiency and long-term stability. To successfully deploy hybrid perovskites, we must understand the nature of the different types of defects, assess their potentially varied roles in device performance, and understand how they respond to passivation strategies. Here, by correlating photoemission and synchrotron-based scanning probe X-ray microscopies, we unveil three different types of defect clusters in state-of-the-art triple cation mixed halide perovskite thin films. Incorporating ultrafast time-resolution into our photoemission measurements, we show that defect clusters originating at grain boundaries are the most detrimental for photocarrier trapping, while lead iodide defect clusters are relatively benign. Hexagonal polytype defect clusters are only mildly detrimental individually, but can have a significant impact overall if abundant in occurrence. We also show that passivating defects with oxygen in the presence of light, a previously used approach to improve efficiency, has a varied impact on the different types of defects. Even with just mild oxygen treatment, the grain boundary defects are completely healed, while the lead iodide defects begin to show signs of chemical alteration. Our findings highlight the need for multi-pronged strategies tailored to selectively address the detrimental impact of the different defect types in hybrid perovskite solar cells.