| 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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Itskos, Grigorios
University of Cyprus
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Antimony-doped tin oxide hole injection interlayer improving the efficiency of perovskite nanocrystal light emitting diodes
- 2024All-perovskite multicomponent nanocrystal superlatticescitations
- 2022Flexible, free-standing polymer membranes sensitized by CsPbX3 nanocrystals as gain media for low threshold, multicolor light amplificationcitations
- 2021Efficient amplified spontaneous emission from solution-processed CsPbBr 3 nanocrystal microcavities under continuous wave excitationcitations
- 2021Surface functionalization of CsPbBr 3 nanocrystals for photonic applicationscitations
- 2020Exciton-ligand interactions in PbS quantum dots capped with metal chalcogenidescitations
- 2020Single-Exciton Gain and Stimulated Emission Across the Infrared Telecom Band from Robust Heavily Doped PbS Colloidal Quantum Dots.citations
- 2019Robust hydrophobic and hydrophilic polymer fibers sensitized by inorganic and hybrid lead halide perovskite nanocrystal emitterscitations
- 2019Manufacturing of ultra-fine particle coal fly ash–A380 aluminum matrix composites with improved mechanical properties by improved ring milling and oscillating microgrid mixingcitations
- 2018A comparative study on phyllosilicate and tectosilicate mineral structural propertiescitations
- 2018Influence of process parameters on the properties of pulsed laser deposited CuIn0.7Ga0.3Se2 thin filmscitations
- 2017Long-lived hot carriers in formamidinium lead iodide nanocrystalscitations
- 2014Lead halide perovskites and other metal halide complexes as inorganic capping ligands for colloidal nanocrystalscitations
- 2013Size-Dependent Charge Transfer in Blends of PbS Quantum Dots with a Low-Gap Silicon-Bridged Copolymercitations
- 2011Optical Properties of Organic Semiconductor Blends with Near-Infrared Quantum-Dot Sensitizers for Light Harvesting Applicationscitations
Places of action
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article
Single-Exciton Gain and Stimulated Emission Across the Infrared Telecom Band from Robust Heavily Doped PbS Colloidal Quantum Dots.
Abstract
Materials with optical gain in the infrared are of paramount importance for optical communications, medical diagnostics, and silicon photonics. The current technology is based either on costly III-V semiconductors that are not monolithic to silicon CMOS technology or Er-doped fiber technology that does not make use of the full fiber transparency window. Colloidal quantum dots (CQDs) offer a unique opportunity as an optical gain medium in view of their tunable bandgap, solution processability, and CMOS compatibility. The 8-fold degeneracy of infrared CQDs based on Pb-chalcogenides has hindered the demonstration of low-threshold optical gain and lasing, at room temperature. We demonstrate room-temperature, infrared, size-tunable, band-edge stimulated emission with a line width of ∼14 meV. Leveraging robust electronic doping and charge-exciton interactions in PbS CQD thin films, we reach a gain threshold at the single exciton regime representing a 4-fold reduction from the theoretical limit of an 8-fold degenerate system, with a net modal gain in excess of 100 cm-1.