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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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Kirchartz, Thomas
Forschungszentrum Jülich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024High‐Bandgap Perovskites for Efficient Indoor Light Harvestingcitations
- 2023Characterizing the influence of charge extraction layers on the performance of triple‐cation perovskite solar cellscitations
- 2022Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cellscitations
- 2021Comment on “Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells”citations
- 2021Pathways toward 30% Efficient Single‐Junction Perovskite Solar Cells and the Role of Mobile Ionscitations
- 2021Roadmap on organic-inorganic hybrid perovskite semiconductors and devicescitations
- 2021Pathways toward 30% efficient single-junction perovskite solar cells and the role of mobile ionscitations
- 2020Photoluminescence-based characterization of halide perovskites for photovoltaicscitations
- 2020Femto- to Microsecond Dynamics of Excited Electrons in a Quadruple Cation Perovskitecitations
- 2020Femto- to Microsecond Dynamics of Excited Electrons in a Quadruple Cation Perovskitecitations
- 2020How To Quantify the Efficiency Potential of Neat Perovskite Films: Perovskite Semiconductors with an Implied Efficiency Exceeding 28%citations
- 2019Charge-Carrier Recombination in Halide Perovskitescitations
- 2019Charge-Carrier Recombination in Halide Perovskites.
- 2019The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cellscitations
- 2019Highly Compact TiO<sub>2</sub> Films by Spray Pyrolysis and Application in Perovskite Solar Cellscitations
- 2019Fermi-level pinning in methylammonium lead iodide perovskitescitations
- 2018Spin-coated planar Sb<sub>2</sub>S<sub>3</sub> hybrid solar cells approaching 5% efficiencycitations
- 2016Physical aspects of ferroelectric semiconductors for photovoltaic solar energy conversioncitations
- 2016Classification of solar cells according to mechanisms of charge separation and charge collectioncitations
- 2013Influence of crystallinity and energetics on charge separation in polymer–inorganic nanocomposite films for solar cellscitations
Places of action
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article
Femto- to Microsecond Dynamics of Excited Electrons in a Quadruple Cation Perovskite
Abstract
Quadruple cation mixed halide perovskite, GA0.015Cs0.046MA0.152FA0.787Pb(I0.815Br0.185)3, single crystals were grown for the first time using an inverse temperature crystallization process. Solar cell devices in n-i-p stack configuration using thin films of the same materials showed power conversion efficiency above 20%. Complementary time-resolved spectroscopy confirmed that polycrystalline thin films and single crystals identically composed exhibit similar carrier dynamics in the picosecond range. Cooling of excited carriers and bandgap renormalization occur on the same time scale of 200–300 fs. The radiative recombination coefficient (1.2 × 10–9 cm3/s) is comparable to values reported for a GaAs semiconductor. At low excitation density, a long carrier lifetime of 3.2 μs was recorded possibly due to the passivation of recombination centers. This study clarifies discrepancies about the lifetime of hot carriers, the impact of radiative recombination, and the role of recombination centers on solar cell performance. The quadruple cation perovskites displayed short time dynamics with slow recombination of charge carriers.