| 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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Steiner, Ullrich
Adolphe Merkle Institute
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (42/42 displayed)
- 2024The Role of Interfacial Effects in the Impedance of Nanostructured Solid Polymer Electrolytes
- 2023Rendering Polyurethane Hydrophilic for Efficient Cellulose Reinforcement in Melt‐Spun Nanocomposite Fiberscitations
- 2023Directed Self-Assembly of Diamond Networks in Triblock Terpolymer Films on Patterned Substratescitations
- 2023Broadband circular dichroism in chiral plasmonic woodpilescitations
- 2021Shaping perovskites: in situ crystallization mechanism of rapid thermally annealed, prepatterned perovskite filmscitations
- 2021Shaping perovskites: in situ crystallization mechanism of rapid thermally annealed, prepatterned perovskite filmscitations
- 2021Revisiting metal fluorides as lithium-ion battery cathodes.
- 2021Physical passivation of grain boundaries and defects in perovskite solar cells by an isolating thin polymercitations
- 2020Comparing the excited-state properties of a mixed-cation–mixed-halide perovskite to methylammonium lead iodidecitations
- 2020Melt-spun nanocomposite fibers reinforced with aligned tunicate nanocrystalscitations
- 2020Tuning the properties of a UV-polymerized, cross-linked solid polymer electrolyte for lithium batteriescitations
- 2020Tuning the Properties of a UV-Polymerized, Cross-Linked Solid Polymer Electrolyte for Lithium Batteriescitations
- 2019Processing pathways decide polymer properties at the molecular level
- 2019Processing pathways decide polymer properties at the molecular levelcitations
- 2019Metasurfaces Atop Metamaterials: Surface Morphology Induces Linear Dichroism in Gyroid Optical Metamaterials.
- 2019Towards Polymers with Molecular Auxeticity
- 2018Controlling Self-Assembly in Gyroid Terpolymer Films By Solvent Vapor Annealing.
- 2018Controlling Self-Assembly in Gyroid Terpolymer Films By Solvent Vapor Annealing.
- 2018Flash Infrared Annealing for Antisolvent‐Free Highly Efficient Perovskite Solar Cellscitations
- 2017Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cellscitations
- 2017Chemical vapour deposition of freestanding sub-60 nm graphene gyroidscitations
- 2017Optical Imaging of Large Gyroid Grains in Block Copolymer Templates by Confined Crystallization.
- 2016In-situ observation of moisture-induced degradation of perovskite solar cells using laser-beam induced currentcitations
- 2015Phosphonic anchoring groups in organic dyes for solid-state solar cellscitations
- 2015Phosphonic anchoring groups in organic dyes for solid-state solar cellscitations
- 20153D Nanostructured Conjugated Polymers for Optical Applications
- 2015Strong Photocurrent from Two-Dimensional Excitons in Solution-Processed Stacked Perovskite Semiconductor Sheets
- 2015Strong Photocurrent from Two-Dimensional Excitons in Solution-Processed Stacked Perovskite Semiconductor Sheetscitations
- 2015Strong photocurrent from 2D excitons in solution-processed stacked perovskite semiconductor sheets
- 2015Role of PbSe Structural Stabilization in Photovoltaic Cellscitations
- 2014Ultrafast nonlinear response of gold gyroid three-dimensional metamaterialscitations
- 2014Bio-inspired hierarchical polymer fiber-carbon nanotube adhesivescitations
- 2014Performance and Stability Enhancement of Dye-Sensitized and Perovskite Solar Cells by Al Doping of TiO2citations
- 2013Hierarchical orientation of crystallinity by block-copolymer patterning and alignment in an electric fieldcitations
- 2013Crystallization-induced 10-nm structure formation in P3HT/PCBM blendscitations
- 2011Carbon Nanotubes Alignment via Electrohydrodynamic Patterning of Nanocompositescitations
- 2011In situ electrochemical monitoring of selective etching in ordered mesoporous block-copolymer templatescitations
- 2010Soft-etch mesoporous hole-conducting block copolymer templatescitations
- 2010Control of gyroid forming block copolymer templatescitations
- 2010Formation of nanopatterned polymer blends in photovoltaic devicescitations
- 2010Rapid Electrohydrodynamic Lithography Using Low-Viscosity Polymerscitations
- 2009Pattern formation in thin polymer films by spatially modulated electric fieldscitations
Places of action
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article
Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cells
Abstract
Perovskites have been demonstrated in solar cells with power conversion efficiency well above 20%, which makes them one of the strongest contenders for the next generation photovoltaics. While there are no concerns about their efficiency, very little is known about their stability under illumination and load.Ionic defects and their migration in the perovskite crystal lattice are one of the most alarming sources of degradation, which can potentially prevent the commercialization of perovskite solar cells (PSCs).In this work, we provide direct evidence of electric field-induced ionic defect migration and we isolate their effect on the long-term performance of state-of-the-art devices.Supported by modelling, we demonstrate that ionic defects, migrating on timescales significantly longer (above 103 s) than what has so far been explored (from 10-1 to 102 s), abate the initial efficiency by 10-15% after several hours of operation at the maximum power point.Though these losses are not negligible, we prove that the initial efficiency is fully recovered when leaving the device in the dark for a comparable amount of time.We verified this behaviour over several cycles resembling day/night phases, thus probing the stability of PSCs under native working conditions.This unusual behaviour reveals, that research and industrial standards currently in use to assess the performance and the stability of solar cells need to be adjusted for PSCs.Our work paves the way towards much needed new testing protocols and figures of merit specifically designed for PSCs.