| 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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Zheng, Kaibo
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Nonadiabatic charge-transfer within photoexcited nickel porphyrinscitations
- 2024Nonadiabatic Charge Transfer within Photoexcited Nickel Porphyrins
- 2024Nonadiabatic Charge Transfer within Photoexcited Nickel Porphyrinscitations
- 2024Nonadiabatic Charge Transfer within Photoexcited Nickel Porphyrinscitations
- 2023Slower Auger Recombination in 12-Faceted Dodecahedron CsPbBr3 Nanocrystalscitations
- 2020Exploring the light-induced dynamics in solvated metallogrid complexes with femtosecond pulses across the electromagnetic spectrumcitations
- 2018Inorganic Ions Assisted the Anisotropic Growth of CsPbCl 3 Nanowires with Surface Passivation Effectcitations
- 2018Inorganic Ions Assisted Anisotropic Growth of CsPbCl3 Nanowires with Surface Passivation Effectcitations
- 2018Inorganic Ions Assisted the Anisotropic Growth of $mathrm{CsPbCl_{3}}$ Nanowires with Surface Passivation Effectcitations
- 2017Drastic difference between hole and electron injection through the gradient shell of Cd x Se y Zn 1 - x S 1 - y quantum dotscitations
- 2017Drastic difference between hole and electron injection through the gradient shell of $mathrm{Cd_{x}Se_{y}Zn_{1−x}S_{1−y}}$ quantum dotscitations
- 2017Drastic difference between hole and electron injection through the gradient shell of CdxSeyZn1−xS1−y quantum dotscitations
- 2017Drastic difference between hole and electron injection through the gradient shell of Cd: XSeyZn1- xS1- y quantum dotscitations
- 2016Direct Experimental Evidence for Photoinduced Strong-Coupling Polarons in Organolead Halide Perovskite Nanoparticlescitations
- 2016Correlating structure and electronic band-edge properties in organolead halide perovskites nanoparticlescitations
- 2016Correlating structure and electronic band-edge properties in organolead halide perovskites nanoparticlescitations
- 2016Correlating structure and electronic band-edge properties in organolead halide perovskites nanoparticlescitations
- 2015Enhanced Organo-Metal Halide Perovskite Photoluminescence from Nanosized Defect-Free Crystallites and Emitting Sitescitations
- 2014Organometal Halide Perovskite Solar Cell Materials Rationalized: Ultrafast Charge Generation, High and Microsecond-Long Balanced Mobilities, and Slow Recombinationcitations
- 2014Electron relaxation in the CdSe quantum dot - ZnO composite: prospects for photovoltaic applications.citations
- 2013Synthesis, diffused reflectance and electrical properties of nanocrystalline Fe-doped ZnO via sol-gel calcination techniquecitations
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.