Atmospheric Exposure Triggers Light-Induced Degradation in 2D Lead-Halide Perovskites

Gianluca Grimaldi; Imme Schuringa; Jaco J. Geuchies; Susan A. Rigter; Tom Hoekstra; Jan Versluis; Juanita Hidalgo; Juan-Pablo Correa-Baena; Jorik van de Groep; Heejae Kim; Mischa Bonn; Bruno Ehrler

doi:10.1021/acsenergylett.4c02300

Atmospheric Exposure Triggers Light-Induced Degradation in 2D Lead-Halide Perovskites

Gianluca Grimaldi, Imme Schuringa, Jaco J. Geuchies, Susan A. Rigter, Tom Hoekstra, Jan Versluis, Juanita Hidalgo, Juan-Pablo Correa-Baena, Jorik van de Groep, Heejae Kim, Mischa Bonn, Bruno Ehrler

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Quasi-2D perovskites have been pivotal in recent efforts to stabilize perovskite solar cells. Despite the stability boost provided when these materials are introduced in perovskite solar cells, little is known about the intrinsic light and environmental stability of quasi-2D perovskites. In this study, we characterize the photostability of exfoliated quasi-2D perovskite single crystals in air using photoluminescence, infrared, X-ray fluorescence, and energy-dispersive X-ray spectroscopy. Photoexcitation leads to severe material loss with oxygen as a prerequisite for material breakdown. The effect can be traced to the formation of reactive oxygen species, as demonstrated by increases in the photostability under oxygen-free conditions. We show the effect of combined passivation steps, showcasing the stability enhancement offered by 2D-capping layers in combination with an oxygen-free atmosphere. Our results reveal that the stability of illuminated quasi-2D perovskites depends critically on oxygen exposure, highlighting the importance of oxygen-blocking passivation strategies for stable 2D perovskite-based devices.

Original language	English
Pages (from-to)	5771-5779
Journal	ACS Energy Letters
Volume	9
Issue number	12
DOIs	https://doi.org/10.1021/acsenergylett.4c02300
Publication status	Published - 13 Dec 2024
Externally published	Yes

Funding

The work of G.G. was supported by the EPSRC International Centre to Centre grant EP/S030638/1. J.J.G. gratefully acknowledges financial support from the Alexander von Humboldt Foundation. I.S. acknowledges OCENW.KLEIN.076, which is financed by the Dutch Research Council (NWO). T.H. and J.v.d.G. are supported by the Dutch Research Council (NWO) through a Vidi grant (Project No. VI.Vidi.203.027). Use of the Advanced Photon Source, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under Contract No. DE-AC02-06CH11357.

Funders	Funder number
Argonne National Laboratory
Office of Science
Alexander von Humboldt-Stiftung
EPSRC International Centre to Centre	EP/S030638/1
Nederlandse Organisatie voor Wetenschappelijk Onderzoek	VI.Vidi.203.027
U.S. Department of Energy	DE-AC02-06CH11357

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title = "Atmospheric Exposure Triggers Light-Induced Degradation in 2D Lead-Halide Perovskites",

abstract = "Quasi-2D perovskites have been pivotal in recent efforts to stabilize perovskite solar cells. Despite the stability boost provided when these materials are introduced in perovskite solar cells, little is known about the intrinsic light and environmental stability of quasi-2D perovskites. In this study, we characterize the photostability of exfoliated quasi-2D perovskite single crystals in air using photoluminescence, infrared, X-ray fluorescence, and energy-dispersive X-ray spectroscopy. Photoexcitation leads to severe material loss with oxygen as a prerequisite for material breakdown. The effect can be traced to the formation of reactive oxygen species, as demonstrated by increases in the photostability under oxygen-free conditions. We show the effect of combined passivation steps, showcasing the stability enhancement offered by 2D-capping layers in combination with an oxygen-free atmosphere. Our results reveal that the stability of illuminated quasi-2D perovskites depends critically on oxygen exposure, highlighting the importance of oxygen-blocking passivation strategies for stable 2D perovskite-based devices.",

author = "Gianluca Grimaldi and Imme Schuringa and Geuchies, {Jaco J.} and Rigter, {Susan A.} and Tom Hoekstra and Jan Versluis and Juanita Hidalgo and Juan-Pablo Correa-Baena and {van de Groep}, Jorik and Heejae Kim and Mischa Bonn and Bruno Ehrler",

year = "2024",

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doi = "10.1021/acsenergylett.4c02300",

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T1 - Atmospheric Exposure Triggers Light-Induced Degradation in 2D Lead-Halide Perovskites

AU - Grimaldi, Gianluca

AU - Schuringa, Imme

AU - Geuchies, Jaco J.

AU - Rigter, Susan A.

AU - Hoekstra, Tom

AU - Versluis, Jan

AU - Hidalgo, Juanita

AU - Correa-Baena, Juan-Pablo

AU - van de Groep, Jorik

AU - Kim, Heejae

AU - Bonn, Mischa

AU - Ehrler, Bruno

PY - 2024/12/13

Y1 - 2024/12/13

N2 - Quasi-2D perovskites have been pivotal in recent efforts to stabilize perovskite solar cells. Despite the stability boost provided when these materials are introduced in perovskite solar cells, little is known about the intrinsic light and environmental stability of quasi-2D perovskites. In this study, we characterize the photostability of exfoliated quasi-2D perovskite single crystals in air using photoluminescence, infrared, X-ray fluorescence, and energy-dispersive X-ray spectroscopy. Photoexcitation leads to severe material loss with oxygen as a prerequisite for material breakdown. The effect can be traced to the formation of reactive oxygen species, as demonstrated by increases in the photostability under oxygen-free conditions. We show the effect of combined passivation steps, showcasing the stability enhancement offered by 2D-capping layers in combination with an oxygen-free atmosphere. Our results reveal that the stability of illuminated quasi-2D perovskites depends critically on oxygen exposure, highlighting the importance of oxygen-blocking passivation strategies for stable 2D perovskite-based devices.

AB - Quasi-2D perovskites have been pivotal in recent efforts to stabilize perovskite solar cells. Despite the stability boost provided when these materials are introduced in perovskite solar cells, little is known about the intrinsic light and environmental stability of quasi-2D perovskites. In this study, we characterize the photostability of exfoliated quasi-2D perovskite single crystals in air using photoluminescence, infrared, X-ray fluorescence, and energy-dispersive X-ray spectroscopy. Photoexcitation leads to severe material loss with oxygen as a prerequisite for material breakdown. The effect can be traced to the formation of reactive oxygen species, as demonstrated by increases in the photostability under oxygen-free conditions. We show the effect of combined passivation steps, showcasing the stability enhancement offered by 2D-capping layers in combination with an oxygen-free atmosphere. Our results reveal that the stability of illuminated quasi-2D perovskites depends critically on oxygen exposure, highlighting the importance of oxygen-blocking passivation strategies for stable 2D perovskite-based devices.

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JO - ACS Energy Letters

JF - ACS Energy Letters

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ER -

Atmospheric Exposure Triggers Light-Induced Degradation in 2D Lead-Halide Perovskites

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