| 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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Ten Brink, Gert H.
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Bridging the gap between high-entropy alloys and metallic glasses:Control over disorder and mechanical properties of coatings
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysics.
- 2022Nanostructure and thermal power of highly-textured and single-crystal-like Bi2Te3 thin filmscitations
- 2022Nanostructure and thermal power of highly-textured and single-crystal-like Bi2Te3 thin filmscitations
- 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
- 2021Tunable wettability of polymer films by partial engulfment of nanoparticlescitations
- 2021Tunable wettability of polymer films by partial engulfment of nanoparticlescitations
- 2020Microstructure, precipitate and property evolution in cold-rolled Ti-V high strength low alloy steelcitations
- 2020Microstructure, precipitate and property evolution in cold-rolled Ti-V high strength low alloy steelcitations
- 2020Microstructure, precipitate and property evolution in cold-rolled Ti-V high strength low alloy steelcitations
- 2020Unraveling the Microstructure of Layered Metal Halide Perovskite Filmscitations
- 2020Unraveling the Microstructure of Layered Metal Halide Perovskite Filmscitations
- 2020Stable cesium formamidinium lead halide perovskites: a comparison of photophysics and phase purity in thin films and single crystalscitations
- 2019Stable Cesium Formamidinium Lead Halide Perovskitescitations
- 2019Mechanism of surface passivation of methylammonium lead tribromide single crystals by benzylaminecitations
- 2019Mechanism of surface passivation of methylammonium lead tribromide single crystals by benzylaminecitations
- 2019Enhancing the crystallinity and perfecting the orientation of formamidinium tin iodide for highly efficient Sn-based perovskite solar cellscitations
- 2019The Impact of Stoichiometry on the Photophysical Properties of Ruddlesden-Popper Perovskitescitations
- 2019Stable Cesium Formamidinium Lead Halide Perovskites:A Comparison of Photophysics and Phase Purity in Thin Films and Single Crystalscitations
- 2019Investigation of the Nanoscale Morphology in Industrially Relevant Clearcoats of Waterborne Polymer Colloids by Means of Variable-Angle-Grazing Incidence Small-Angle X-ray Scatteringcitations
- 2018Micropatterned 2D Hybrid Perovskite Thin Films with Enhanced Photoluminescence Lifetimescitations
- 2018Combining Ultrafast Calorimetry and Electron Microscopycitations
- 2018Combining Ultrafast Calorimetry and Electron Microscopy:Reversible Phase Transformations in SeTeAs Alloyscitations
- 2018Shape and structural motifs control of MgTi bimetallic nanoparticles using hydrogen and methane as trace impuritiescitations
- 2017N-Type Organic Thermoelectricscitations
- 2016N-type polymers as electron extraction layers in hybrid perovskite solar cells with improved ambient stabilitycitations
- 2014Synthesis and exceptional thermal stability of Mg-based bimetallic nanoparticles during hydrogenationcitations
- 2013Tuning structural motifs and alloying of bulk immiscible Mo-Cu bimetallic nanoparticles by gas-phase synthesiscitations
- 2010Microstructural features of intergranular brittle fracture and cold cracking in high strength aluminum alloyscitations
- 2006The growth-induced microstructural origin of the optical black state of Mg2NiHx thin filmscitations
- 2006Optical, structural, and electrical properties of Mg2NiH4 thin films in situ grown by activated reactive evaporationcitations
Places of action
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article
Mechanism of surface passivation of methylammonium lead tribromide single crystals by benzylamine
Abstract
<p>Hybrid organic-inorganic perovskites are semiconductors that have great potential for optoelectronic applications such as light-emitting diodes, photodetectors, and solar cells. In such devices, the surface plays a crucial role in the performance and stability, as it strongly influences the recombination rate of excited charge carriers. It is reported that molecular ligands such as benzylamine are capable of reducing the surface trap state density in thin films. In this work, we aim to clarify the mechanisms that govern the surface passivation of hybrid perovskites by benzylamine. We developed a versatile approach to investigate the influence of benzylamine passivation on the well-defined surface of freshly cleaved hybrid perovskite crystals. We show that benzylamine permanently passivates surface trap states in these single crystals, resulting in enhanced photoluminescence and charge carrier lifetimes. Additionally, we show that exposure to benzylamine leads to the replacement of the methylammonium cations by benzylammonium, thereby creating a thermodynamically more stable two-dimensional (2D) perovskite (BA)(2)PbBr4 on the surface of the three-dimensional crystal. This conversion to a 2D perovskite drives an anisotropic etching of the crystal surface, with the {100} planes being most prone to etching. Initially, square etching pits appear spread over the surface. As time elapses, these etching pits broaden and merge to yield large flat terraces that are oriented normally to the cleaving plane when they form. A thorough understanding of the mechanisms governing the surface passivation is crucially important to optimize and design novel passivation schemes, with the ultimate goal of further advancing the efficiency of optoelectronic devices based on hybrid perovskites.</p>