Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning
Abstract Two-dimensional organic-inorganic hybrid halide perovskites possess diverse structural polymorphs with versatile physical properties, which can be controlled by order-disorder transition of the spacer cation, making them attractive for constructing semiconductor homojunctions. Here, we demo...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-04-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-47406-1 |
| _version_ | 1797209184551305216 |
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| author | Huilong Hong Songhao Guo Leyang Jin Yuhong Mao Yuguang Chen Jiazhen Gu Shaochuang Chen Xu Huang Yan Guan Xiaotong Li Yan Li Xujie Lü Yongping Fu |
| author_facet | Huilong Hong Songhao Guo Leyang Jin Yuhong Mao Yuguang Chen Jiazhen Gu Shaochuang Chen Xu Huang Yan Guan Xiaotong Li Yan Li Xujie Lü Yongping Fu |
| author_sort | Huilong Hong |
| collection | DOAJ |
| description | Abstract Two-dimensional organic-inorganic hybrid halide perovskites possess diverse structural polymorphs with versatile physical properties, which can be controlled by order-disorder transition of the spacer cation, making them attractive for constructing semiconductor homojunctions. Here, we demonstrate a space-cation-dopant-induced phase stabilization approach to creating a lateral homojunction composed of ordered and disordered phases within a two-dimensional perovskite. By doping a small quantity of pentylammonium into (butylammonium)2PbI4 or vice versa, we effectively suppress the ordering transition of the spacer cation and the associated out-of-plane octahedral tilting in the inorganic framework, resulting in phase pining of the disordered phase when decreasing temperature or increasing pressure. This enables epitaxial growth of a two-dimensional perovskite homojunction with tunable optical properties under temperature and pressure stimuli, as well as directional exciton diffusion across the interface. Our results demonstrate a previously unexplored strategy for constructing two-dimensional perovskite heterostructures by thermodynamic tuning and spacer cation doping. |
| first_indexed | 2024-04-24T09:50:40Z |
| format | Article |
| id | doaj.art-1114da032198480eaf2c4f98e92b12a9 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-24T09:50:40Z |
| publishDate | 2024-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-1114da032198480eaf2c4f98e92b12a92024-04-14T11:22:31ZengNature PortfolioNature Communications2041-17232024-04-011511910.1038/s41467-024-47406-1Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinningHuilong Hong0Songhao Guo1Leyang Jin2Yuhong Mao3Yuguang Chen4Jiazhen Gu5Shaochuang Chen6Xu Huang7Yan Guan8Xiaotong Li9Yan Li10Xujie Lü11Yongping Fu12Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityCenter for High Pressure Science and Technology Advanced ResearchBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityCenter for High Pressure Science and Technology Advanced ResearchBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityDepartment of Chemistry & Organic and Carbon Electronics Laboratories, North Carolina State UniversityBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityCenter for High Pressure Science and Technology Advanced ResearchBeijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking UniversityAbstract Two-dimensional organic-inorganic hybrid halide perovskites possess diverse structural polymorphs with versatile physical properties, which can be controlled by order-disorder transition of the spacer cation, making them attractive for constructing semiconductor homojunctions. Here, we demonstrate a space-cation-dopant-induced phase stabilization approach to creating a lateral homojunction composed of ordered and disordered phases within a two-dimensional perovskite. By doping a small quantity of pentylammonium into (butylammonium)2PbI4 or vice versa, we effectively suppress the ordering transition of the spacer cation and the associated out-of-plane octahedral tilting in the inorganic framework, resulting in phase pining of the disordered phase when decreasing temperature or increasing pressure. This enables epitaxial growth of a two-dimensional perovskite homojunction with tunable optical properties under temperature and pressure stimuli, as well as directional exciton diffusion across the interface. Our results demonstrate a previously unexplored strategy for constructing two-dimensional perovskite heterostructures by thermodynamic tuning and spacer cation doping.https://doi.org/10.1038/s41467-024-47406-1 |
| spellingShingle | Huilong Hong Songhao Guo Leyang Jin Yuhong Mao Yuguang Chen Jiazhen Gu Shaochuang Chen Xu Huang Yan Guan Xiaotong Li Yan Li Xujie Lü Yongping Fu Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning Nature Communications |
| title | Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning |
| title_full | Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning |
| title_fullStr | Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning |
| title_full_unstemmed | Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning |
| title_short | Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning |
| title_sort | two dimensional lead halide perovskite lateral homojunctions enabled by phase pinning |
| url | https://doi.org/10.1038/s41467-024-47406-1 |
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