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Abstract
Degradation of perovskite solar cells (PSCs) is often found to be partially or fully reversible when the cells are allowed to recover in the dark. Unlike the dynamics of degradation, knowledge about the dynamics of PSC cell recovery is very limited. Here, we demonstrate that the PSC recovery strongly depends on the electrical bias conditions during the light-induced degradation and that it can be manipulated by applying an external electrical bias during the recovery phase. Investigation of the recovery dynamics allows us to analyze the degradation mechanisms in detail. More specifically, we aged a mixed-cation mixed-halide PSC with a n-i-p structure under illumination in open-circuit (OC) or short-circuit (SC) conditions, and periodically measured their characteristics during the recovery. PSCs aged in SC degrade faster and fully recover after the light is switched off, while the performance of the cells aged in OC does not recover but instead further decreases after the light is switched off (“drop-in-dark” effect). With the use of transient photoluminescence, secondary ion mass spectrometry, and drift-diffusion-based simulations, we hypothesize that extrinsic ion migration causes the drop-in-dark effect, by forming an electron extraction barrier at the metal oxide electron transport layer. The applied bias alleviates this effect. Our results are relevant for gaining a deeper understanding of the multiple degradation mechanisms present in perovskite solar cells, and for finding a practical way to assist their recovery.
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Authors (16)
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M. Prete
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M. V. Khenkin
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B. R. Patil
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J. S. Lissau
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Ilker Dogan
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Jennie Hansen
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T. Leißner
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J. Fiutowski
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H.-G. Rubahn
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B. Julsgaard
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P. Balling
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V. Turkovic
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Yulia Galagan dr
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E. A. Katz
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M. Madsen
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acsaem.1c00588
- License
- Copyright (2021 American Chemical Society)
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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ACS Applied Energy Materials
no. 4,
pages 6562 - 6573,
ISSN: 2574-0962 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Prete M., Khenkin M. V., Głowienka D., Patil B. R., Lissau J. S., Dogan I., Hansen J., Leißner T., Fiutowski J., Rubahn H., Julsgaard B., Balling P., Turkovic V., Galagan Y., Katz E. A., Madsen M.: Bias-Dependent Dynamics of Degradation and Recovery in Perovskite Solar Cells// ACS Applied Energy Materials -Vol. 4,iss. 7 (2021), s.6562-6573
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acsaem.1c00588
- Verified by:
- Gdańsk University of Technology
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