Inverted hysteresis as a diagnostic tool for perovskite solar cells: Insights from the drift-diffusion model
Inverted hysteresis as a diagnostic tool for perovskite solar cells: Insights from the drift-diffusion model
Despite current-voltage hysteresis in perovskite solar cells (PSCs) having been the subject of significant research over the past decade, inverted hysteresis (IH), although frequently observed, is still not properly understood. Several mechanisms, based on numerical simulations, have been proposed to explain it but a satisfactory description of the underlying cause remains elusive. To rectify this omission, we analyze a drift-diffusion model of a planar three-layer PSC, using asymptotic techniques, to show how inverted hysteresis comes about. The asymptotic analysis of the drift-diffusion model yields a simple approximate model that shows excellent agreement with numerical simulations of the full drift-diffusion model provides fundamental insights into the causes of IH and reconciles the alternative explanations found in the literature. This approximate model is analyzed further to isolate the material properties and external conditions that contribute to inverted hysteresis and constitutes a diagnostic tool in which the appearance of IH can be used to infer properties of the cell.
Drift-diffusion, Inverted hysteresis, Ion migration, Matched asymptotics, Perovskite solar cells
Clarke, Will
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Cowley, Matt V.
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Wolf, Matthew J.
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Cameron, Petra
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Walker, Alison
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Richardson, Giles
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1 March 2023
Clarke, Will
b674ce92-d0a7-48ed-ad6b-2b14cdaf87ce
Cowley, Matt V.
0bb0d4ca-ba63-4cfa-a00b-814eb28ea004
Wolf, Matthew J.
47a97646-0ecb-4e3a-b58f-9fd933a1f637
Cameron, Petra
fade5d20-5438-459d-9e81-49c634df97ab
Walker, Alison
7c4785e9-df51-44a1-a6a9-5b4ad28807e6
Richardson, Giles
3fd8e08f-e615-42bb-a1ff-3346c5847b91
Clarke, Will, Cowley, Matt V., Wolf, Matthew J., Cameron, Petra, Walker, Alison and Richardson, Giles
(2023)
Inverted hysteresis as a diagnostic tool for perovskite solar cells: Insights from the drift-diffusion model.
Journal of Applied Physics, 133 (9), [095001].
(doi:10.1063/5.0136683).
Abstract
Despite current-voltage hysteresis in perovskite solar cells (PSCs) having been the subject of significant research over the past decade, inverted hysteresis (IH), although frequently observed, is still not properly understood. Several mechanisms, based on numerical simulations, have been proposed to explain it but a satisfactory description of the underlying cause remains elusive. To rectify this omission, we analyze a drift-diffusion model of a planar three-layer PSC, using asymptotic techniques, to show how inverted hysteresis comes about. The asymptotic analysis of the drift-diffusion model yields a simple approximate model that shows excellent agreement with numerical simulations of the full drift-diffusion model provides fundamental insights into the causes of IH and reconciles the alternative explanations found in the literature. This approximate model is analyzed further to isolate the material properties and external conditions that contribute to inverted hysteresis and constitutes a diagnostic tool in which the appearance of IH can be used to infer properties of the cell.
Text
An_asymptotic_model_of_inverted_hysteresis_in_perovskite_solar_cells-17
- Accepted Manuscript
Text
5.0136683
- Version of Record
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Accepted/In Press date: 10 February 2023
Published date: 1 March 2023
Additional Information:
Publisher Copyright:
© 2023 Author(s).
Keywords:
Drift-diffusion, Inverted hysteresis, Ion migration, Matched asymptotics, Perovskite solar cells
Identifiers
Local EPrints ID: 475881
URI: http://eprints.soton.ac.uk/id/eprint/475881
ISSN: 0021-8979
PURE UUID: dee11773-8bd5-4729-8500-31f8089db9a4
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Date deposited: 29 Mar 2023 16:53
Last modified: 17 Mar 2024 04:04
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Contributors
Author:
Matt V. Cowley
Author:
Matthew J. Wolf
Author:
Petra Cameron
Author:
Alison Walker
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