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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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Unger, Eva
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Optical Analysis of Perovskite III-V Nanowires Interpenetrated Tandem Solar Cellscitations
- 2024Investigation of perovskite layer growth from solution on textured substrates
- 2024Bicolour, large area, inkjet-printed metal halide perovskite light emitting diodes†
- 2024Integration of Multijunction Absorbers and Catalysts for Efficient Solar‐Driven Artificial Leaf Structures: A Physical and Materials Science Perspectivecitations
- 2023Chloride-Based Additive Engineering for Efficient and Stable Wide-Bandgap Perovskite Solar Cellscitations
- 2023Large area inkjet-printed metal halide perovskite LEDs enabled by gas flow assisted drying and crystallization
- 2023Chloride‐Based Additive Engineering for Efficient and Stable Wide‐Bandgap Perovskite Solar Cellscitations
- 2023Ink Design Enabling Slot‐Die Coated Perovskite Solar Cells with >22% Power Conversion Efficiency, Micro‐Modules, and 1 Year of Outdoor Performance Evaluationcitations
- 2022An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2022Multi‐Stage Phase‐Segregation of Mixed Halide Perovskites under Illumination: A Quantitative Comparison of Experimental Observations and Thermodynamic Modelscitations
- 2021An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2021Stability assessment of p-i-n perovskite photovoltaic mini-modules utilizing different top metal electrodescitations
- 2021Roadmap on organic-inorganic hybrid perovskite semiconductors and devicescitations
- 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
- 2021Compositional and Interfacial Engineering Yield High-Performance and Stable p-i-n Perovskite Solar Cells and Mini-Modulescitations
- 2021Photoinduced energy-level realignment at interfaces between organic semiconductors and metal-halide perovskitescitations
- 2021Using Combinatorial Inkjet Printing for Synthesis and Deposition of Metal Halide Perovskites in Wavelength‐Selective Photodetectors
- 2020In Situ Imaging of Ferroelastic Domain Dynamics in CsPbBr3Perovskite Nanowires by Nanofocused Scanning X-ray Diffractioncitations
- 2020The Role of Grain Boundaries on Ionic Defect Migration in Metal Halide Perovskitescitations
- 2020Hybrid perovskite crystallization from binary solvent mixtures: interplay of evaporation rate and binding strength of solventscitations
- 2020Perovskite solar cell performance assessmentcitations
- 2020Interdependence of photon upconversion performance and antisolvent processing in thin-film halide perovskite-sensitized triplet–triplet annihilatorscitations
- 2020In situ imaging of ferroelastic domain dynamics in CsPbBr3perovskite nanowires by nanofocused scanning X-ray diffractioncitations
- 2015Enhanced Organo-Metal Halide Perovskite Photoluminescence from Nanosized Defect-Free Crystallites and Emitting Sitescitations
Places of action
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article
Enhanced Organo-Metal Halide Perovskite Photoluminescence from Nanosized Defect-Free Crystallites and Emitting Sites
Abstract
Photoluminescence (PL) of organo-metal halide perovskite semiconductors can be enhanced by several orders of magnitude by exposure to visible light. We applied PL microscopy and super-resolution optical imaging to investigate this phenomenon with spatial resolution better than 10 nm using films of CH3NH3PbI3 prepared by the equimolar solution-deposition method, resulting in crystals of different sizes. We found that PL of similar to 100 nm crystals enhances much faster than that of larger, micrometer-sized ones. This crystal-size dependence of the photochemical light passivation of charge traps responsible for PL quenching allowed us to conclude that traps are present in the entire crystal volume rather than at the surface only. Because of this effect, "dark" micrometer-sized perovskite crystals can be converted into highly luminescent smaller ones just by mechanical grinding. Super-resolution optical imaging shows spatial inhomogeneity of the PL intensity within perovskite crystals and the existence of <100 nm-sized localized emitting sites. The possible origin of these sites is discussed.