Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization Engineering
Layered hybrid halide perovskites (LHHPs) are an emerging type of semiconductor with a set of unique optoelectronic properties. However, the solution processing of high-quality LHHPs films with desired optical properties and phase composition is a challenging task, possibly due to the structural dis...
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MDPI AG
2021-12-01
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| Series: | Nanomaterials |
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| author | Andrei S. Tutantsev Ekaterina I. Marchenko Natalia N. Udalova Sergey A. Fateev Eugene A. Goodilin Alexey B. Tarasov |
| author_facet | Andrei S. Tutantsev Ekaterina I. Marchenko Natalia N. Udalova Sergey A. Fateev Eugene A. Goodilin Alexey B. Tarasov |
| author_sort | Andrei S. Tutantsev |
| collection | DOAJ |
| description | Layered hybrid halide perovskites (LHHPs) are an emerging type of semiconductor with a set of unique optoelectronic properties. However, the solution processing of high-quality LHHPs films with desired optical properties and phase composition is a challenging task, possibly due to the structural disorder in the LHHP phase. Nevertheless, there is still a lack of experimental evidence and understanding of the nature of the structural disorder in LHHPs and its influence on the optical properties of the material. In the current work, using 2D perovskites (C<sub>4</sub>H<sub>9</sub>NH<sub>3</sub>)<sub>2</sub>(CH<sub>3</sub>NH<sub>3</sub>)<sub>n−1</sub>Pb<sub>n</sub>I<sub>3n+1</sub> (further BA<sub>2</sub>MA<sub>n−1</sub>Pb<sub>n</sub>I<sub>3n+1</sub>) with n = 1–4 as a model system, we demonstrate that deviations in LHHPs optical properties and X-ray diffraction occur due to the presence of continuous defects—Stacking Faults (SFs). Upon analyzing the experimental data and modeled XRD patterns of a possible set of stacking faults (SFs) in the BA<sub>2</sub>MAPb<sub>2</sub>I<sub>7</sub> phase, we uncover the most plausible type of SFs, featured by the thickness variation within one perovskite slab. We also demonstrate the successful suppression of SFs formation by simple addition of BAI excess into BA<sub>2</sub>MA<sub>n−1</sub>Pb<sub>n</sub>I<sub>3n+1</sub> solutions. |
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| language | English |
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| publishDate | 2021-12-01 |
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| series | Nanomaterials |
| spelling | doaj.art-8e2dd55ccb8a4de79311809df0c7376f2023-11-23T09:51:09ZengMDPI AGNanomaterials2079-49912021-12-011112333310.3390/nano11123333Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization EngineeringAndrei S. Tutantsev0Ekaterina I. Marchenko1Natalia N. Udalova2Sergey A. Fateev3Eugene A. Goodilin4Alexey B. Tarasov5Laboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, RussiaLaboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, RussiaLaboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, RussiaLaboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, RussiaLaboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, RussiaLaboratory of New Materials for Solar Energetics, Faculty of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, RussiaLayered hybrid halide perovskites (LHHPs) are an emerging type of semiconductor with a set of unique optoelectronic properties. However, the solution processing of high-quality LHHPs films with desired optical properties and phase composition is a challenging task, possibly due to the structural disorder in the LHHP phase. Nevertheless, there is still a lack of experimental evidence and understanding of the nature of the structural disorder in LHHPs and its influence on the optical properties of the material. In the current work, using 2D perovskites (C<sub>4</sub>H<sub>9</sub>NH<sub>3</sub>)<sub>2</sub>(CH<sub>3</sub>NH<sub>3</sub>)<sub>n−1</sub>Pb<sub>n</sub>I<sub>3n+1</sub> (further BA<sub>2</sub>MA<sub>n−1</sub>Pb<sub>n</sub>I<sub>3n+1</sub>) with n = 1–4 as a model system, we demonstrate that deviations in LHHPs optical properties and X-ray diffraction occur due to the presence of continuous defects—Stacking Faults (SFs). Upon analyzing the experimental data and modeled XRD patterns of a possible set of stacking faults (SFs) in the BA<sub>2</sub>MAPb<sub>2</sub>I<sub>7</sub> phase, we uncover the most plausible type of SFs, featured by the thickness variation within one perovskite slab. We also demonstrate the successful suppression of SFs formation by simple addition of BAI excess into BA<sub>2</sub>MA<sub>n−1</sub>Pb<sub>n</sub>I<sub>3n+1</sub> solutions.https://www.mdpi.com/2079-4991/11/12/3333layered hybrid halide perovskiteslow-dimensional crystal structurestacking faultsdefectsstructural disorderadditives |
| spellingShingle | Andrei S. Tutantsev Ekaterina I. Marchenko Natalia N. Udalova Sergey A. Fateev Eugene A. Goodilin Alexey B. Tarasov Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization Engineering Nanomaterials layered hybrid halide perovskites low-dimensional crystal structure stacking faults defects structural disorder additives |
| title | Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization Engineering |
| title_full | Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization Engineering |
| title_fullStr | Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization Engineering |
| title_full_unstemmed | Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization Engineering |
| title_short | Structural Disorder in Layered Hybrid Halide Perovskites: Types of Stacking Faults, Influence on Optical Properties and Their Suppression by Crystallization Engineering |
| title_sort | structural disorder in layered hybrid halide perovskites types of stacking faults influence on optical properties and their suppression by crystallization engineering |
| topic | layered hybrid halide perovskites low-dimensional crystal structure stacking faults defects structural disorder additives |
| url | https://www.mdpi.com/2079-4991/11/12/3333 |
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