Journal Article

PUBDB-2025-05146

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png How crystallization additives govern halide perovskite grain growth

Maschwitz, T. ; Merten, L.Extern* ; Ünlü, F. ; Majewski, M. ; Haddadi Barzoki, F. ; Wu, Z. ; Öz, S. D. ; Kreusel, C. ; Theisen, M. ; Wang, P. ; Schiffer, M. ; Boccarella, G. ; Marioth, G. ; Weidner, H. ; Schultheis, S. ; Schieferstein, T. ; Gidaszewski, D. ; Julliev, Z. ; Kneschaurek, E.Extern* ; Munteanu, V.Extern* ; Zaluzhnyy, I.Extern* ; Bertram, F.DESY* ; Jaffrès, A. ; He, J. ; Ashurov, N. ; Stolterfoht, M. ; Wolff, C. M. ; Unger, E.Extern* ; Olthof, S. ; Brocks, G. ; Tao, S. ; Grüninger, H. ; Ronsin, O. J. J. ; Harting, J. ; Kotthaus, A. F. ; Kirsch, S. F. ; Mathur, S. ; Hinderhofer, A.Extern* ; Schreiber, F.Extern* ; Riedl, T. ; Brinkmann, K. O. (Corresponding author)Extern*

2025
Springer Nature [London]

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Please use a persistent id in citations: doi:10.1038/s41467-025-65484-7  doi:10.3204/PUBDB-2025-05146

Abstract: The preparation of perovskite solar cells from the liquid phase is a cornerstone of their immense potential. However, a clear relationship between the precursor ink and the formation of the resulting perovskite is missing. Established theories, such as heterogeneous nucleation and lead complex colloid formation, often prove unreliable, which has led to an overreliance on heuristics. Most high-performing perovskites use additives to control crystallization. Their role during crystallization is, however, elusive. Here, we provide evidence that typical crystallization additives do not predominantly impact the nucleation phase but rather facilitate coarsening grain growth by increasing ion mobility across grain boundaries. Drawing from the insights of our broad, interdisciplinary study that combines ex and in situ characterization methods, devices, simulations, and density function theory calculation, we propose a concept that proves valid for various additives and perovskite formulations. Moreover, we establish a direct link between additive engineering and perovskite post-processing, offering a unified framework for advancing material design and process engineering.

Note: cc-byproject hinzufügen: 01DP20008

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-D (FS-PETRA-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. 05K19VTA - Entwicklung einer kompakten Probenumgebung mit Spin-Coater für in-situ Röntgenstreuung an PETRA III. (BMBF-05K19VTA) (BMBF-05K19VTA)
4. FOXES - Fully Oxide-based Zero-Emission and Portable Energy Supply (951774) (951774)
5. FS-Proposal: II-20190761 (II-20190761) (II-20190761)
6. FS-Proposal: I-20221269 (I-20221269) (I-20221269)
7. FS-Proposal: I-20211642 (I-20211642) (I-20211642)

Experiment(s):

1. PETRA Beamline P08 (PETRA III)

Appears in the scientific report 2025

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