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Spontaneous formation of robust two-dimensional perovskite phases.

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Title: Spontaneous formation of robust two-dimensional perovskite phases.
Authors: Tan, Shaun, Shih, Meng-Chen, Lu, Yongli, Choi, Seung-Gu, Dong, Yifan, Lee, Joo-Hong, Yavuz, Ilhan, Larson, Bryon W., Park, So Yeon, Kodalle, Tim, Zhang, Ruiqi, Grotevent, Matthias J., Lin, Yu-Kuan, Zhu, Hua, Bulović, Vladimir, Sutter-Fella, Carolin M., Park, Nam-Gyu, Beard, Matthew C., Lee, Jin-Wook, Zhu, Kai
Source: Science. 5/8/2025, Vol. 388 Issue 6747, p639-645. 7p.
Subjects: Perovskite, Solar cells, Dimethyl sulfoxide, Methylammonium, Isopropyl alcohol
Abstract: The two-dimensional on three-dimensional (2D/3D) perovskite bilayer heterostructure can improve the stability and performance of perovskite solar cells. We show that the 2D/3D perovskite stack in a device evolves dynamically during its end-of-life decomposition. Initially phase-pure 2D interlayers can evolve differently, resulting in different device stabilities. We show that a robust 2D interlayer can be formed using mixed solvents to regulate its crystallinity and phase purity. The resulting 2D/3D devices achieved 25.9% efficiency and had good durability, retaining 91% of their initial performance after 1074 hours at 85°C using maximum power point tracking. Editor's summary: Robust, phase-pure two-dimensional (2D) passivation layers for 3D perovskites stabilize solar cells against degradation under ultraviolet irradiation. Tan et al. found that 2D interlayers based on octylammonium and methylammonium cations formed with a mixed solvent (dimethylsulfoxide and isopropanol) spontaneously formed phase-pure 2D perovskites with high crystallinity. Solar cells based on these 2D or 3D perovskite bilayers had a power conversion efficiency of 25.9% and retained 91% of their initial performance after 1074 hours at 85°C under maximum power point tracking.—Phil Szuromi [ABSTRACT FROM AUTHOR]
Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Spontaneous formation of robust two-dimensional perovskite phases.
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  Data: <searchLink fieldCode="AR" term="%22Tan%2C+Shaun%22">Tan, Shaun</searchLink><br /><searchLink fieldCode="AR" term="%22Shih%2C+Meng-Chen%22">Shih, Meng-Chen</searchLink><br /><searchLink fieldCode="AR" term="%22Lu%2C+Yongli%22">Lu, Yongli</searchLink><br /><searchLink fieldCode="AR" term="%22Choi%2C+Seung-Gu%22">Choi, Seung-Gu</searchLink><br /><searchLink fieldCode="AR" term="%22Dong%2C+Yifan%22">Dong, Yifan</searchLink><br /><searchLink fieldCode="AR" term="%22Lee%2C+Joo-Hong%22">Lee, Joo-Hong</searchLink><br /><searchLink fieldCode="AR" term="%22Yavuz%2C+Ilhan%22">Yavuz, Ilhan</searchLink><br /><searchLink fieldCode="AR" term="%22Larson%2C+Bryon+W%2E%22">Larson, Bryon W.</searchLink><br /><searchLink fieldCode="AR" term="%22Park%2C+So+Yeon%22">Park, So Yeon</searchLink><br /><searchLink fieldCode="AR" term="%22Kodalle%2C+Tim%22">Kodalle, Tim</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Ruiqi%22">Zhang, Ruiqi</searchLink><br /><searchLink fieldCode="AR" term="%22Grotevent%2C+Matthias+J%2E%22">Grotevent, Matthias J.</searchLink><br /><searchLink fieldCode="AR" term="%22Lin%2C+Yu-Kuan%22">Lin, Yu-Kuan</searchLink><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Hua%22">Zhu, Hua</searchLink><br /><searchLink fieldCode="AR" term="%22Bulović%2C+Vladimir%22">Bulović, Vladimir</searchLink><br /><searchLink fieldCode="AR" term="%22Sutter-Fella%2C+Carolin+M%2E%22">Sutter-Fella, Carolin M.</searchLink><br /><searchLink fieldCode="AR" term="%22Park%2C+Nam-Gyu%22">Park, Nam-Gyu</searchLink><br /><searchLink fieldCode="AR" term="%22Beard%2C+Matthew+C%2E%22">Beard, Matthew C.</searchLink><br /><searchLink fieldCode="AR" term="%22Lee%2C+Jin-Wook%22">Lee, Jin-Wook</searchLink><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Kai%22">Zhu, Kai</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science%22">Science</searchLink>. 5/8/2025, Vol. 388 Issue 6747, p639-645. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+cells%22">Solar cells</searchLink><br /><searchLink fieldCode="DE" term="%22Dimethyl+sulfoxide%22">Dimethyl sulfoxide</searchLink><br /><searchLink fieldCode="DE" term="%22Methylammonium%22">Methylammonium</searchLink><br /><searchLink fieldCode="DE" term="%22Isopropyl+alcohol%22">Isopropyl alcohol</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The two-dimensional on three-dimensional (2D/3D) perovskite bilayer heterostructure can improve the stability and performance of perovskite solar cells. We show that the 2D/3D perovskite stack in a device evolves dynamically during its end-of-life decomposition. Initially phase-pure 2D interlayers can evolve differently, resulting in different device stabilities. We show that a robust 2D interlayer can be formed using mixed solvents to regulate its crystallinity and phase purity. The resulting 2D/3D devices achieved 25.9% efficiency and had good durability, retaining 91% of their initial performance after 1074 hours at 85°C using maximum power point tracking. Editor's summary: Robust, phase-pure two-dimensional (2D) passivation layers for 3D perovskites stabilize solar cells against degradation under ultraviolet irradiation. Tan et al. found that 2D interlayers based on octylammonium and methylammonium cations formed with a mixed solvent (dimethylsulfoxide and isopropanol) spontaneously formed phase-pure 2D perovskites with high crystallinity. Solar cells based on these 2D or 3D perovskite bilayers had a power conversion efficiency of 25.9% and retained 91% of their initial performance after 1074 hours at 85°C under maximum power point tracking.—Phil Szuromi [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1126/science.adr1334
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 639
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      – SubjectFull: Perovskite
        Type: general
      – SubjectFull: Solar cells
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      – SubjectFull: Dimethyl sulfoxide
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      – SubjectFull: Methylammonium
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      – SubjectFull: Isopropyl alcohol
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      – TitleFull: Spontaneous formation of robust two-dimensional perovskite phases.
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              Text: 5/8/2025
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