| 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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Castelli, Ivano Eligio
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Exploring the electronic properties and oxygen vacancy formation in SrTiO3 under straincitations
- 2023Structural and electronic properties of double wall MoSTe nanotubescitations
- 2023Transformations of 2D to 3D Double-Perovskite Nanoplates of Cs2AgBiBr6 Compositioncitations
- 2022Rational Catalyst Design for Higher Propene Partial Electro-oxidation Activity by Alloying Pd with Aucitations
- 2022Bandgap prediction of metal halide perovskites using regression machine learning modelscitations
- 2021Band structure of MoSTe Janus nanotubescitations
- 2021Band structure of MoSTe Janus nanotubescitations
- 2020Machine-learning structural and electronic properties of metal halide perovskites using a hierarchical convolutional neural networkcitations
- 2019High-Entropy Alloys as a Discovery Platform for Electrocatalysiscitations
- 2019Fe-Doping in Double Perovskite PrBaCo2(1-x)Fe2xO6-δ: Insights into Structural and Electronic Effects to Enhance Oxygen Evolution Catalyst Stabilitycitations
- 2018Highly Active Nanoperovskite Catalysts for Oxygen Evolution Reaction: Insights into Activity and Stability of Ba0.5Sr0.5Co0.8Fe0.2O2+δ and PrBaCo2O5+δcitations
- 2018Computational Screening of Light-absorbing Materials for Photoelectrochemical Water Splittingcitations
- 2017Anisotropic Proton and Oxygen Ion Conductivity in Epitaxial Ba2In2O5 Thin Filmscitations
- 2017Anisotropic Proton and Oxygen Ion Conductivity in Epitaxial Ba 2 In 2 O 5 Thin Filmscitations
- 2015Band-gap engineering of functional perovskites through quantum confinement and tunnelingcitations
- 2013Computational Screening of Materials for Water Splitting Applications
- 2013Bandgap Engineering of Double Perovskites for One- and Two-photon Water Splittingcitations
- 2013Stability and bandgaps of layered perovskites for one- and two-photon water splittingcitations
- 2012Computational screening of perovskite metal oxides for optimal solar light capturecitations
Places of action
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article
Transformations of 2D to 3D Double-Perovskite Nanoplates of Cs2AgBiBr6 Composition
Abstract
Double-perovskite (elpasolite) structures with Cs<sub>2</sub>AgBiBr<sub>6</sub> composition are suggested as emerging inorganic semiconductors for solar energy conversion. We show how colloidal synthesis provides a methodological basis for investigating single monolayer two-dimensional (2D) materials. We then use the monolayers as building blocks for a more stable bilayer structure (quasi 2D) and thicker nanoplates. Each derivative’s structure, composition, and morphology are studied, and a growing mechanism for the three-dimensional (3D) nanoplates is hypothesized. High-resolution powder X-ray diffraction (HR-PXRD) synchrotron data reveal that the unit cell volume contracts by ∼2% when transitioning from a monolayer to a bilayer structure. The monolayer’s and bilayer’s thermal stability and thermal expansion coefficients are investigated using <i>in situ</i> temperature-dependent X-ray diffraction (XRD) measurements. Our colloidal approach to two-dimensional perovskites enables the use of high-resolution transmission electron microscopy (HRTEM) to detect structural defects. We found a typical structural defect in Cs<sub>2</sub>AgBiBr<sub>6</sub> nanoplates with big lateral dimensions in the form of elongated voids. We hypothesize that these defects are reminiscent of an oriented attachment formation step accentuated in the final annealing step of the synthesis. The colloidal approach is essential for improving the properties of bismuth-based lead-free double perovskites, bringing them one step closer to real-life photovoltaic (PV) implementation.