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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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Saliba, Michael
University of Stuttgart
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (33/33 displayed)
- 2024An Integrated Deposition and Passivation Strategy for Controlled Crystallization of 2D/3D Halide Perovskite Filmscitations
- 2024Ultra-uniform perovskite crystals formed in the presence of tetrabutylammonium bistriflimide afford efficient and stable perovskite solar cells
- 2024Lead‐free halide perovskite materials and optoelectronic devices: progress and prospectivecitations
- 2023Coordination chemistry as a universal strategy for a controlled perovskite crystallization
- 2023Large grain size with reduced non-radiative recombination in potassium incorporated methylammonium-free perovskite solar cellscitations
- 2023Lead-Free Halide Perovskite Materials and Optoelectronic Devices: Progress and Prospectivecitations
- 2023Substoichiometric mixing of metal halide powders and their single-source evaporation for perovskite photovoltaicscitations
- 2023Characterizing the influence of charge extraction layers on the performance of triple‐cation perovskite solar cellscitations
- 2023Lead‐Free Halide Perovskite Materials and Optoelectronic Devices: Progress and Prospectivecitations
- 2022Recent Progress in Mixed A‐Site Cation Halide Perovskite Thin‐Films and Nanocrystals for Solar Cells and Light‐Emitting Diodescitations
- 2022Recent Progress in Mixed A‐Site Cation Halide Perovskite Thin‐Films and Nanocrystals for Solar Cells and Light‐Emitting Diodes
- 2022An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2022Recent progress in mixed a‐site cation halide perovskite thin‐films and nanocrystals for solar cells and light‐emitting diodescitations
- 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
- 2021An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2021Defect Passivation in Lead-Halide Perovskite Nanocrystals and Thin Films: Toward Efficient LEDs and Solar Cells.
- 2021Defect passivation in lead‐halide Perovskite nanocrystals and thin films: toward efficient LEDs and solar cellscitations
- 2021Photoelectrochemical Water‐Splitting Using CuO‐Based Electrodes for Hydrogen Production: A Reviewcitations
- 2021Photoelectrochemical water‐splitting using CuO‐based electrodes for hydrogen production : a review
- 2021Defect Passivation in Lead‐Halide Perovskite Nanocrystals and Thin Films: Toward Efficient LEDs and Solar Cellscitations
- 2021Physical passivation of grain boundaries and defects in perovskite solar cells by an isolating thin polymercitations
- 2020Energy Spotlightcitations
- 2020Recent Advances in Plasmonic Perovskite Solar Cellscitations
- 2020Photodoping through local charge carrier accumulation in alloyed hybrid perovskites for highly efficient luminescencecitations
- 2019PbZrTiO3 ferroelectric oxide as an electron extraction material for stable halide perovskite solar cellscitations
- 2019The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cellscitations
- 2018Perovskite Solar Cells: From the Atomic Level to Film Quality and Device Performancecitations
- 2017Migration of cations induces reversible performance losses over day/night cycling in perovskite solar cellscitations
- 2017Monolithic CIGS-perovskite tandem cell for optimal light harvesting without current matchingcitations
- 2016Not all that glitters is gold: metal-migration-induced degradation in perovskite solar cellscitations
- 2014Low-Temperature Processed Electron Collection Layers of Graphene/TiO Nanocomposites in Thin Film Perovskite Solar Cellscitations
- 2013Enhancement of Perovskite-Based Solar Cells Employing Core–Shell Metal Nanoparticlescitations
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.