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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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Petrozza, Annamaria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024How Photogenerated I 2 Induces I-Rich Phase Formation in Lead Mixed Halide Perovskitescitations
- 2024Stabilizing Single‐Source Evaporated Perovskites with Organic Interlayers for Amplified Spontaneous Emissioncitations
- 2024Mutual Destabilization of Wide Bandgap Perovskite and PbI<sub>2</sub> Inclusions through Interface Carrier Trappingcitations
- 2024Electron Spectroscopy and Microscopy: A Window into the Surface Electronic Properties of Polycrystalline Metal Halide Perovskitescitations
- 2024How Photogenerated I2 Induces I-Rich Phase Formation in Lead Mixed Halide Perovskitescitations
- 2024Understanding the Surface Chemistry of Tin Halide Perovskitescitations
- 2023Defect Engineering to Achieve Photostable Wide Bandgap Metal Halide Perovskitescitations
- 2023How Photogenerated I2 Induces I‐rich Phase Formation in Lead Mixed Halide Perovskitescitations
- 2023X‐Ray Nanoanalysis Revealing the Role of Electronically Active Passivation Layers in Perovskite X‐Ray film Detectorscitations
- 2023Tuning Structure and Excitonic Properties of 2D Ruddlesden–Popper Germanium, Tin, and Lead Iodide Perovskites via Interplay between Cationscitations
- 2023How Halide Alloying Influences the Optoelectronic Quality in Tin-Halide Perovskite Solar Absorberscitations
- 2023Structural effects on the luminescence properties of CsPbI 3 nanocrystalscitations
- 2022Photoluminescence Intensity Enhancement in Tin Halide Perovskitescitations
- 2021Coordinating Solvent-Assisted Synthesis of Phase-Stable Perovskite Nanocrystals with High Yield Production for Optoelectronic Applicationscitations
- 2021Moisture resistance in perovskite solar cells attributed to a water-splitting layercitations
- 2021High‐Sensitivity Flexible X‐Ray Detectors based on Printed Perovskite Inkscitations
- 2020Colourful luminescence of metal halide perovskites – from fundamentals to applicationscitations
- 2020Humidity-robust scalable metal halide perovskite film deposition for photovoltaic applicationscitations
- 2019Controlling competing photochemical reactions stabilizes perovskite solar cellscitations
- 2019Defect activity in lead halide perovskitescitations
- 2018Iodine chemistry determines the defect tolerance of lead-halide perovskitescitations
- 2018Interfacial Morphology Addresses Performance of Perovskite Solar Cells Based on Composite Hole Transporting Materials of Functionalized Reduced Graphene Oxide and P3HTcitations
- 2017Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cellscitations
- 2016Photoinduced emissive trap states in lead halide perovskite semiconductorscitations
- 2015Improving the long-term stability of perovskite solar cells with a porous Al2O3 buffer-layercitations
- 2015Role of microstructure in the electron–hole interaction of hybrid lead halide perovskitescitations
- 2015Improving the Long-Term Stability of Perovskite Solar Cells with a Porous Al O Buffer Layercitations
- 2014Lead-free organic–inorganic tin halide perovskites for photovoltaic applicationscitations
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.