Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals
Abstract Colloidal lead halide perovskite nanocrystals have potential for lighting applications due to their optical properties. Precise control of the nanocrystal dimensions and composition is a prerequisite for establishing practical applications. However, the rapid nature of their synthesis precl...
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Nature Portfolio
2024-10-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-53221-5 |
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| author | Kilian Frank Nina A. Henke Carola Lampe Tizian Lorenzen Benjamin März Xiao Sun Sylvio Haas Olof Gutowski Ann-Christin Dippel Veronika Mayer Knut Müller-Caspary Alexander S. Urban Bert Nickel |
| author_facet | Kilian Frank Nina A. Henke Carola Lampe Tizian Lorenzen Benjamin März Xiao Sun Sylvio Haas Olof Gutowski Ann-Christin Dippel Veronika Mayer Knut Müller-Caspary Alexander S. Urban Bert Nickel |
| author_sort | Kilian Frank |
| collection | DOAJ |
| description | Abstract Colloidal lead halide perovskite nanocrystals have potential for lighting applications due to their optical properties. Precise control of the nanocrystal dimensions and composition is a prerequisite for establishing practical applications. However, the rapid nature of their synthesis precludes a detailed understanding of the synthetic pathways, thereby limiting the optimisation. Here, we deduce the formation mechanisms of anisotropic lead halide perovskite nanocrystals, 1D nanorods and 2D nanoplatelets, by combining in situ X-ray scattering and photoluminescence spectroscopy. In both cases, emissive prolate nanoclusters form when the two precursor solutions are mixed. The ensuing antisolvent addition induces the divergent anisotropy: The intermediate nanoclusters are driven into a dense hexagonal mesophase, fusing to form nanorods. Contrastingly, nanoplatelets grow freely dispersed from dissolving nanoclusters, stacking subsequently in lamellar superstructures. Shape and size control of the nanocrystals are determined primarily by the antisolvent’s dipole moment and Hansen hydrogen bonding parameter. Exploiting the interplay of antisolvent and organic ligands could enable more complex nanocrystal geometries in the future. |
| format | Article |
| id | doaj-art-bf2b3cff670e453b95bcf9506ae40c46 |
| institution | OA Journals |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Nature Portfolio |
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| series | Nature Communications |
| spelling | doaj-art-bf2b3cff670e453b95bcf9506ae40c462025-08-20T02:17:53ZengNature PortfolioNature Communications2041-17232024-10-0115111010.1038/s41467-024-53221-5Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystalsKilian Frank0Nina A. Henke1Carola Lampe2Tizian Lorenzen3Benjamin März4Xiao Sun5Sylvio Haas6Olof Gutowski7Ann-Christin Dippel8Veronika Mayer9Knut Müller-Caspary10Alexander S. Urban11Bert Nickel12Soft Condensed Matter Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität MünchenNanospectroscopy Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität MünchenNanospectroscopy Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität MünchenDepartment of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität MünchenDepartment of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität MünchenDeutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYNanospectroscopy Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität MünchenDepartment of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität MünchenNanospectroscopy Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität MünchenSoft Condensed Matter Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität MünchenAbstract Colloidal lead halide perovskite nanocrystals have potential for lighting applications due to their optical properties. Precise control of the nanocrystal dimensions and composition is a prerequisite for establishing practical applications. However, the rapid nature of their synthesis precludes a detailed understanding of the synthetic pathways, thereby limiting the optimisation. Here, we deduce the formation mechanisms of anisotropic lead halide perovskite nanocrystals, 1D nanorods and 2D nanoplatelets, by combining in situ X-ray scattering and photoluminescence spectroscopy. In both cases, emissive prolate nanoclusters form when the two precursor solutions are mixed. The ensuing antisolvent addition induces the divergent anisotropy: The intermediate nanoclusters are driven into a dense hexagonal mesophase, fusing to form nanorods. Contrastingly, nanoplatelets grow freely dispersed from dissolving nanoclusters, stacking subsequently in lamellar superstructures. Shape and size control of the nanocrystals are determined primarily by the antisolvent’s dipole moment and Hansen hydrogen bonding parameter. Exploiting the interplay of antisolvent and organic ligands could enable more complex nanocrystal geometries in the future.https://doi.org/10.1038/s41467-024-53221-5 |
| spellingShingle | Kilian Frank Nina A. Henke Carola Lampe Tizian Lorenzen Benjamin März Xiao Sun Sylvio Haas Olof Gutowski Ann-Christin Dippel Veronika Mayer Knut Müller-Caspary Alexander S. Urban Bert Nickel Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals Nature Communications |
| title | Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals |
| title_full | Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals |
| title_fullStr | Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals |
| title_full_unstemmed | Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals |
| title_short | Antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals |
| title_sort | antisolvent controls the shape and size of anisotropic lead halide perovskite nanocrystals |
| url | https://doi.org/10.1038/s41467-024-53221-5 |
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