Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells

Florian Scheler; Silvia Mariotti; Daniele Mantione; Sahil Shah; Dorothee Menzel; Hanz Koebler; Maxim Simmonds; Thomas Gries; Jona Kurpiers; Viktor Skorjanc; Jinzhao Li; Amran Al-Ashouri; Phillip Wagner; Steven Harvey; Fengjiu Yang; Marin Rusu; Thomas Unold; Bernd Stannowski; Kai Zhu; Felix Lang; Dieter Neher; Eva Unger; Antonio Abate; David Mecerreyes; Martin Stolterfoht; Eike Kohnen; Lars Korte; Marko Topic; Steve Albrecht

doi:10.1002/aenm.202404726

Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells

Florian Scheler, Silvia Mariotti, Daniele Mantione, Sahil Shah, Dorothee Menzel, Hanz Koebler, Maxim Simmonds, Thomas Gries, Jona Kurpiers, Viktor Skorjanc, Jinzhao Li, Amran Al-Ashouri, Phillip Wagner, Steven Harvey, Fengjiu Yang, Marin Rusu, Thomas Unold, Bernd Stannowski, Kai Zhu, Felix LangDieter Neher, Eva Unger, Antonio Abate, David Mecerreyes, Martin Stolterfoht, Eike Kohnen, Lars Korte, Marko Topic, Steve Albrecht

Research output: Contribution to journal › Article › peer-review

Abstract

Perovskite solar cells (PSCs) are promising for high-efficiency tandem applications, but their long-term stability, particularly due to ion migration, remains a challenge. Despite progress in stabilizing PSCs, they still fall short compared to mature technologies like silicon. This study explores how different piperazinium salt treatments using iodide, chloride, tosylate, and bistriflimide anions affect the energetics, carrier dynamics, and stability of 1.68 eV bandgap PSCs. Chloride-based treatments achieved the highest power conversion efficiency (21.5%) and open-circuit voltage (1.28 V), correlating with stronger band bending and n-type character at the surface. At the same time, they showed reduced long-term stability due to increased ionic losses. Tosylate-treated devices offered the best balance, retaining 96.4% efficiency after 1000 h (ISOS-LC-1I). These findings suggest that targeted surface treatments can enhance both efficiency and stability in PSCs.

Original language	American English
Journal	Advanced Energy Materials
DOIs	https://doi.org/10.1002/aenm.202404726
State	Published - 2024

NREL Publication Number

NREL/JA-5K00-91050

Keywords

interface passivation
ionic losses
perovskite solar cells
stability

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10.1002/aenm.202404726

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Scheler, F., Mariotti, S., Mantione, D., Shah, S., Menzel, D., Koebler, H., Simmonds, M., Gries, T., Kurpiers, J., Skorjanc, V., Li, J., Al-Ashouri, A., Wagner, P., Harvey, S., Yang, F., Rusu, M., Unold, T., Stannowski, B., Zhu, K., ... Albrecht, S. (2024). Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells. Advanced Energy Materials. https://doi.org/10.1002/aenm.202404726

@article{b2c1a633c5ce462785a77d08ba290cc2,

title = "Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells",

abstract = "Perovskite solar cells (PSCs) are promising for high-efficiency tandem applications, but their long-term stability, particularly due to ion migration, remains a challenge. Despite progress in stabilizing PSCs, they still fall short compared to mature technologies like silicon. This study explores how different piperazinium salt treatments using iodide, chloride, tosylate, and bistriflimide anions affect the energetics, carrier dynamics, and stability of 1.68 eV bandgap PSCs. Chloride-based treatments achieved the highest power conversion efficiency (21.5%) and open-circuit voltage (1.28 V), correlating with stronger band bending and n-type character at the surface. At the same time, they showed reduced long-term stability due to increased ionic losses. Tosylate-treated devices offered the best balance, retaining 96.4% efficiency after 1000 h (ISOS-LC-1I). These findings suggest that targeted surface treatments can enhance both efficiency and stability in PSCs.",

keywords = "interface passivation, ionic losses, perovskite solar cells, stability",

author = "Florian Scheler and Silvia Mariotti and Daniele Mantione and Sahil Shah and Dorothee Menzel and Hanz Koebler and Maxim Simmonds and Thomas Gries and Jona Kurpiers and Viktor Skorjanc and Jinzhao Li and Amran Al-Ashouri and Phillip Wagner and Steven Harvey and Fengjiu Yang and Marin Rusu and Thomas Unold and Bernd Stannowski and Kai Zhu and Felix Lang and Dieter Neher and Eva Unger and Antonio Abate and David Mecerreyes and Martin Stolterfoht and Eike Kohnen and Lars Korte and Marko Topic and Steve Albrecht",

year = "2024",

doi = "10.1002/aenm.202404726",

language = "American English",

journal = "Advanced Energy Materials",

issn = "1614-6840",

publisher = "John Wiley and Sons Inc.",

}

Scheler, F, Mariotti, S, Mantione, D, Shah, S, Menzel, D, Koebler, H, Simmonds, M, Gries, T, Kurpiers, J, Skorjanc, V, Li, J, Al-Ashouri, A, Wagner, P, Harvey, S , Yang, F, Rusu, M, Unold, T, Stannowski, B, Zhu, K, Lang, F, Neher, D, Unger, E, Abate, A, Mecerreyes, D, Stolterfoht, M, Kohnen, E, Korte, L, Topic, M & Albrecht, S 2024, 'Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells', Advanced Energy Materials. https://doi.org/10.1002/aenm.202404726

TY - JOUR

T1 - Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells

AU - Scheler, Florian

AU - Mariotti, Silvia

AU - Mantione, Daniele

AU - Shah, Sahil

AU - Menzel, Dorothee

AU - Koebler, Hanz

AU - Simmonds, Maxim

AU - Gries, Thomas

AU - Kurpiers, Jona

AU - Skorjanc, Viktor

AU - Li, Jinzhao

AU - Al-Ashouri, Amran

AU - Wagner, Phillip

AU - Harvey, Steven

AU - Yang, Fengjiu

AU - Rusu, Marin

AU - Unold, Thomas

AU - Stannowski, Bernd

AU - Zhu, Kai

AU - Lang, Felix

AU - Neher, Dieter

AU - Unger, Eva

AU - Abate, Antonio

AU - Mecerreyes, David

AU - Stolterfoht, Martin

AU - Kohnen, Eike

AU - Korte, Lars

AU - Topic, Marko

AU - Albrecht, Steve

PY - 2024

Y1 - 2024

N2 - Perovskite solar cells (PSCs) are promising for high-efficiency tandem applications, but their long-term stability, particularly due to ion migration, remains a challenge. Despite progress in stabilizing PSCs, they still fall short compared to mature technologies like silicon. This study explores how different piperazinium salt treatments using iodide, chloride, tosylate, and bistriflimide anions affect the energetics, carrier dynamics, and stability of 1.68 eV bandgap PSCs. Chloride-based treatments achieved the highest power conversion efficiency (21.5%) and open-circuit voltage (1.28 V), correlating with stronger band bending and n-type character at the surface. At the same time, they showed reduced long-term stability due to increased ionic losses. Tosylate-treated devices offered the best balance, retaining 96.4% efficiency after 1000 h (ISOS-LC-1I). These findings suggest that targeted surface treatments can enhance both efficiency and stability in PSCs.

AB - Perovskite solar cells (PSCs) are promising for high-efficiency tandem applications, but their long-term stability, particularly due to ion migration, remains a challenge. Despite progress in stabilizing PSCs, they still fall short compared to mature technologies like silicon. This study explores how different piperazinium salt treatments using iodide, chloride, tosylate, and bistriflimide anions affect the energetics, carrier dynamics, and stability of 1.68 eV bandgap PSCs. Chloride-based treatments achieved the highest power conversion efficiency (21.5%) and open-circuit voltage (1.28 V), correlating with stronger band bending and n-type character at the surface. At the same time, they showed reduced long-term stability due to increased ionic losses. Tosylate-treated devices offered the best balance, retaining 96.4% efficiency after 1000 h (ISOS-LC-1I). These findings suggest that targeted surface treatments can enhance both efficiency and stability in PSCs.

KW - interface passivation

KW - ionic losses

KW - perovskite solar cells

KW - stability

U2 - 10.1002/aenm.202404726

DO - 10.1002/aenm.202404726

M3 - Article

SN - 1614-6840

JO - Advanced Energy Materials

JF - Advanced Energy Materials

ER -

Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells

Abstract

NREL Publication Number

Keywords

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