Photoluminescence and Stability of 2D Ruddlesden–Popper Halide Perovskites
Two-dimensional lead halide perovskites are of significant interest for a variety of practical applications. However, the relationships between their composition and properties are not fully clear. Here we investigated photoluminescence from 2D Ruddlesden–Popper perovskites with different bulky spac...
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2025-06-01
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| author | Zhilin Ren Zhengtian Yuan Aleksandr A. Sergeev Ivor Lončarić Muhammad Umair Ali Atta Ur Rehman Kam Sing Wong Yanling He Juraj Ovčar Jasminka Popović Aleksandra B. Djurišić |
| author_facet | Zhilin Ren Zhengtian Yuan Aleksandr A. Sergeev Ivor Lončarić Muhammad Umair Ali Atta Ur Rehman Kam Sing Wong Yanling He Juraj Ovčar Jasminka Popović Aleksandra B. Djurišić |
| author_sort | Zhilin Ren |
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| description | Two-dimensional lead halide perovskites are of significant interest for a variety of practical applications. However, the relationships between their composition and properties are not fully clear. Here we investigated photoluminescence from 2D Ruddlesden–Popper perovskites with different bulky spacer cations. Significant differences in their optical properties and stability are observed, and perovskites with benzylammonium (BZA) and phenethylammonium (PEA) were selected for more detailed investigation of the observed stability differences due to their similar structure. We find that PEA<sub>2</sub>PbI<sub>4</sub> exhibits more narrow emission and increased stability compared to BZA<sub>2</sub>PbI<sub>4</sub>. In addition, PEA<sub>2</sub>PbI<sub>4</sub> exhibits self-healing of defects evident from PL enhancement, which is absent for BZA<sub>2</sub>PbI<sub>4</sub>. The observed differences between perovskites with BZA and PEA spacer cations can be attributed to differences in the formation of spacer cation vacancies. |
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| issn | 1420-3049 |
| language | English |
| publishDate | 2025-06-01 |
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| spelling | doaj-art-a3aebbc3591e4a03b0938a5b9a0f51a32025-07-11T14:40:54ZengMDPI AGMolecules1420-30492025-06-013013271610.3390/molecules30132716Photoluminescence and Stability of 2D Ruddlesden–Popper Halide PerovskitesZhilin Ren0Zhengtian Yuan1Aleksandr A. Sergeev2Ivor Lončarić3Muhammad Umair Ali4Atta Ur Rehman5Kam Sing Wong6Yanling He7Juraj Ovčar8Jasminka Popović9Aleksandra B. Djurišić10Department of Physics, The University of Hong Kong, Pokfulam Road, Hong KongDepartment of Physics, The University of Hong Kong, Pokfulam Road, Hong KongDepartment of Physics, William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clearwater Bay, Hong KongRuđer Bošković Institute, Bijenička 54, 10000 Zagreb, CroatiaDepartment of Physics, The University of Hong Kong, Pokfulam Road, Hong KongDepartment of Physics, The University of Hong Kong, Pokfulam Road, Hong KongDepartment of Physics, William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clearwater Bay, Hong KongMaterial Characterization and Preparation Facility, The Hong Kong University of Science and Technology (Guangzhou), No. 1 Duxue Road, Dongchong Town, Nansha District, Guangzhou 511453, ChinaRuđer Bošković Institute, Bijenička 54, 10000 Zagreb, CroatiaRuđer Bošković Institute, Bijenička 54, 10000 Zagreb, CroatiaDepartment of Physics, The University of Hong Kong, Pokfulam Road, Hong KongTwo-dimensional lead halide perovskites are of significant interest for a variety of practical applications. However, the relationships between their composition and properties are not fully clear. Here we investigated photoluminescence from 2D Ruddlesden–Popper perovskites with different bulky spacer cations. Significant differences in their optical properties and stability are observed, and perovskites with benzylammonium (BZA) and phenethylammonium (PEA) were selected for more detailed investigation of the observed stability differences due to their similar structure. We find that PEA<sub>2</sub>PbI<sub>4</sub> exhibits more narrow emission and increased stability compared to BZA<sub>2</sub>PbI<sub>4</sub>. In addition, PEA<sub>2</sub>PbI<sub>4</sub> exhibits self-healing of defects evident from PL enhancement, which is absent for BZA<sub>2</sub>PbI<sub>4</sub>. The observed differences between perovskites with BZA and PEA spacer cations can be attributed to differences in the formation of spacer cation vacancies.https://www.mdpi.com/1420-3049/30/13/2716lead halide perovskitephotoluminescencestability |
| spellingShingle | Zhilin Ren Zhengtian Yuan Aleksandr A. Sergeev Ivor Lončarić Muhammad Umair Ali Atta Ur Rehman Kam Sing Wong Yanling He Juraj Ovčar Jasminka Popović Aleksandra B. Djurišić Photoluminescence and Stability of 2D Ruddlesden–Popper Halide Perovskites Molecules lead halide perovskite photoluminescence stability |
| title | Photoluminescence and Stability of 2D Ruddlesden–Popper Halide Perovskites |
| title_full | Photoluminescence and Stability of 2D Ruddlesden–Popper Halide Perovskites |
| title_fullStr | Photoluminescence and Stability of 2D Ruddlesden–Popper Halide Perovskites |
| title_full_unstemmed | Photoluminescence and Stability of 2D Ruddlesden–Popper Halide Perovskites |
| title_short | Photoluminescence and Stability of 2D Ruddlesden–Popper Halide Perovskites |
| title_sort | photoluminescence and stability of 2d ruddlesden popper halide perovskites |
| topic | lead halide perovskite photoluminescence stability |
| url | https://www.mdpi.com/1420-3049/30/13/2716 |
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