| 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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Kahmann, Simon
Chemnitz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2023The Origin of Broad Emission in ⟨100⟩ Two-Dimensional Perovskites: Extrinsic vs Intrinsic Processes.
- 2023The Origin of Broad Emission in ⟨100⟩ Two-Dimensional Perovskites: Extrinsic vs Intrinsic Processes.
- 2023Unraveling the Broadband Emission in Mixed Tin-Lead Layered Perovskitescitations
- 2023Unraveling the Broadband Emission in Mixed Tin-Lead Layered Perovskitescitations
- 2023Tuning the energy transfer in Ruddlesden-Popper perovskites phases through isopropylammonium addition - towards efficient blue emitterscitations
- 2023Tuning the energy transfer in Ruddlesden–Popper perovskites phases through isopropylammonium addition – towards efficient blue emitterscitations
- 2022The Origin of Broad Emission in ⟨100⟩ Two-Dimensional Perovskites: Extrinsic vs Intrinsic Processes.
- 2022The Origin of Broad Emission in ⟨100⟩ Two-Dimensional Perovskites: Extrinsic vs Intrinsic Processescitations
- 2022Taking a closer look - how the microstructure of Dion-Jacobson perovskites governs their photophysics.
- 2022Understanding performance limiting interfacial recombination in pin Perovskite solar cellscitations
- 2022The Origin of Broad Emission in ⟨100»Two-Dimensional Perovskites:Extrinsic vs Intrinsic Processescitations
- 2022The Origin of Broad Emission in â ¨100»Two-Dimensional Perovskites: Extrinsic vs Intrinsic Processes
- 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
- 2021Photophysics of Two-Dimensional Perovskites—Learning from Metal Halide Substitutioncitations
- 2021Photophysics of Two-Dimensional Perovskites—Learning from Metal Halide Substitution
- 2021Molecular Doping Directed by a Neutral Radicalcitations
- 2021Molecular Doping Directed by a Neutral Radicalcitations
- 2020Negative Thermal Quenching in FASnI3 Perovskite Single Crystals and Thin Filmscitations
- 2020Extrinsic nature of the broad photoluminescence in lead iodide-based Ruddlesden-Popper perovskitescitations
- 2020Negative thermal quenching in FASnI 3 perovskite single crystals and thin filmscitations
- 2020Influence of morphology on photoluminescence properties of methylammonium lead tribromide filmscitations
- 2019Hot carrier solar cells and the potential of perovskites for breaking the Shockley-Queisser limitcitations
- 2019Favorable Mixing Thermodynamics in Ternary Polymer Blends for Realizing High Efficiency Plastic Solar Cellscitations
- 2019Photophysical and electronic properties of bismuth-perovskite shelled lead sulfide quantum dotscitations
- 2019The Impact of Stoichiometry on the Photophysical Properties of Ruddlesden-Popper Perovskitescitations
- 2019Effects of strontium doping on the morphological, structural, and photophysical properties of FASnI(3) perovskite thin filmscitations
- 2019Cooling, Scattering, and Recombination-The Role of the Material Quality for the Physics of Tin Halide Perovskitescitations
- 2018Donor- acceptor photoexcitation dynamics in organic blends investigated with a high sensitivity pump- probe systemcitations
- 2015Opto-electronics of PbS quantum dot and narrow bandgap polymer blendscitations
Places of action
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article
Photophysics of Two-Dimensional Perovskites—Learning from Metal Halide Substitution
Abstract
Whereas their photophysics exhibits an intricate interplay of carriers with the lattice, most reports have so far relied on single compound studies. With the exception of variations of the organic spacer cations, the effect of constituent substitution on the photophysics and the nature of emitting species, in particular, has remained largely under-explored. Here PEA$_2$PbBr$_4$, PEA$_2$PbI$_4$, and PEA$_2$SnI$_4$ are studied through a variety of optical spectroscopy techniques to reveal a complex set of excitonic transitions at low temperature. We attribute the emergence of weak high energy features to a vibronic progression breaking Kasha's rule and highlight that the responsible phonons cannot be accessed through simple Raman spectroscopy. Bright peaks at lower energy are due to two distinct excitons, of which the upper is a convolution of a bright exciton and a localised state, whereas the lower is attributed to shallow defects. Our study offers deeper insights into the photophysics of two-dimensional perovskites through compositional substitution and highlights critical limits to the communities' current understanding of the photophysics of these compounds.