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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
Unraveling the Broadband Emission in Mixed Tin-Lead Layered Perovskites
Abstract
<p>Low-dimensional halide perovskites with broad emission are a hot topic for their promising application as white light sources. However, the physical origin of this broadband emission in the sub-bandgap region is still controversial. This work investigates the broad Stokes-shifted emission bands in mixed lead-tin 2D perovskite films prepared by mixing precursor solutions of phenethylammonium lead iodide (PEA<sub>2</sub>PbI<sub>4</sub>, PEA = phenethylammonium) and phenethylammonium tin iodide (PEA<sub>2</sub>SnI<sub>4</sub>). The bandgap can be tuned by the lead-tin ratio, whereas the photoluminescence is broad and significantly Stokes-shifted and appears to be fairly insensitive to the relative amount of Pb and Sn. It is experimentally observed that these low-dimensional systems show substantially less bandgap bowing than their 3D counterpart. Theoretically, this can be attributed to the smaller spin–orbit coupling effect on the 2D perovskites compared to that of 3D ones. The time-resolved photoluminescence shows an ultrafast decay in the high-energy range of the spectra that coincides with the emission range of PEA<sub>2</sub>SnI<sub>4</sub>, while the broadband emission decay is slower, up to the microsecond range. Sub-gap photoexcitation experiments exclude exciton self-trapping as the origin of the broadband emission, pointing to defects as the origin of the broadband emission in 2D Sn/Pb perovskite alloys.</p>