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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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Hagfeldt, Anders
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2023Understanding and decoupling the role of wavelength and defects in light-induced degradation of metal-halide perovskitescitations
- 2022An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2022Experimental and theoretical study of organic sensitizers for solid-state dye-sensitized solar cells (s-DSSCs)citations
- 2022Thermodynamic stability screening of IR-photonic processed multication halide perovskite thin filmscitations
- 2021An open-access database and analysis tool for perovskite solar cells based on the FAIR data principlescitations
- 2021Photoelectrochemical Water‐Splitting Using CuO‐Based Electrodes for Hydrogen Production: A Reviewcitations
- 2021Photoelectrochemical water‐splitting using CuO‐based electrodes for hydrogen production : a review
- 2021Outstanding passivation effect by a mixed-salt interlayer with internal interactions in perovskite solar cellscitations
- 2020Interfacial and bulk properties of hole transporting materials in perovskite solar cells: spiro-MeTAD versus spiro-OMeTADcitations
- 2019PbZrTiO3 ferroelectric oxide as an electron extraction material for stable halide perovskite solar cellscitations
- 2018Perovskite Solar Cells: From the Atomic Level to Film Quality and Device Performancecitations
- 2018Interfacial engineering of metal oxides for highly stable halide perovskite solar cellscitations
- 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
- 2016Carbon nanotube-based hybrid hole-transporting material and selective contact for high efficiency perovskite solar cellscitations
- 2016A New 1,3,4-Oxadiazole-Based Hole-Transport Material for Efficient CH3NH3PbBr3 Perovskite Solar Cellscitations
- 2016Not all that glitters is gold: metal-migration-induced degradation in perovskite solar cellscitations
- 2015Transparent Cuprous Oxide Photocathode Enabling a Stacked Tandem Cell for Unbiased Water Splittingcitations
- 2013Dye sensitised solar cells with nickel oxide photocathodes prepared via scalable microwave sinteringcitations
- 2006Sensitized Hole Injection of Phosphorus Porphyrin into NiO: Toward New Photovoltaic Devicescitations
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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.