| 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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Riedl, Thomas
University of Wuppertal
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Ion-induced field screening as a dominant factor in perovskite solar cell operational stabilitycitations
- 2024Distributed Feedback Lasing in Thermally Imprinted Phase‐Stabilized CsPbI3 Thin Filmscitations
- 2022Preface: Forum on Novel Trends in Halide Perovskites for Optoelectronic Applications
- 2022Selective area heteroepitaxy of InAs nanostructures on nanopillar-patterned GaAs(111)Acitations
- 2022Perovskite-organic tandem solar cells with indium oxide interconnectcitations
- 2021Roadmap on organic-inorganic hybrid perovskite semiconductors and devicescitations
- 2018All-oxide MoO x /SnO x charge recombination interconnects for inverted organic tandem solar cellscitations
- 2018All-oxide MoOx/SnOx charge recombination interconnects for inverted organic tandem solar cellscitations
Places of action
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article
Distributed Feedback Lasing in Thermally Imprinted Phase‐Stabilized CsPbI3 Thin Films
Abstract
<jats:title>Abstract</jats:title><jats:p>All‐inorganic cesium lead halide perovskites (CsPbX<jats:sub>3</jats:sub>, with X = I, Br, Cl) are of great interest for light‐emitting diodes and lasers, as they promise improved thermal stability compared to their organic–inorganic analogues. However, among this family of materials, CsPbI<jats:sub>3</jats:sub> shows a detrimental phase instability that causes the perovskite to convert to a thermodynamically preferred non‐perovskite phase (yellow phase) at room temperature. In fact, reports on lasers using thin films of CsPbI<jats:sub>3</jats:sub> as gain medium are missing, as of yet. Here, the first distributed feedback (DFB) lasers based on CsPbI<jats:sub>3</jats:sub> thin films are presented with a resonator directly patterned into the perovskite by thermal nanoimprint. This breakthrough is unlocked by the additive polyvinyl pyrrolidone (PVP), that affords the formation of perovskite layers consisting of phase stable γ‐CsPbI<jats:sub>3</jats:sub> nanocrystals, that are even preserved during thermal imprint at 170 °C. The DFB lasers show a low lasing threshold of 45 µJ cm<jats:sup>−2</jats:sup> at room temperature under optical pumping and a tunable emission in the deep red spectral region between 714.1 to 723.4 nm. It is anticipated that the findings of this work will have a broad relevance for future electrically driven perovskite lasers and for light‐emitting diodes based on CsPbI<jats:sub>3</jats:sub> as active medium.</jats:p>