Beyond Spin Coating: Homogeneous All-Inorganic Perovskite Films via High-Pressure Recrystallization
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909891475537920 |
|---|---|
| author | Miled, Asma Nguyen, Trong Tam Penuelas, José Benamrouche, Aziz Chevalier, Céline Hoang, Thi Kim Anh Trippé-Allard, Gaëlle Cassette, Elsa Devif, Brice Drouard, Emmanuel Deleporte, Emmanuelle Mai, Hong Hanh Bouazizi, Abdelaziz Seassal, Christian Nguyen, Hai Son |
| author_facet | Miled, Asma Nguyen, Trong Tam Penuelas, José Benamrouche, Aziz Chevalier, Céline Hoang, Thi Kim Anh Trippé-Allard, Gaëlle Cassette, Elsa Devif, Brice Drouard, Emmanuel Deleporte, Emmanuelle Mai, Hong Hanh Bouazizi, Abdelaziz Seassal, Christian Nguyen, Hai Son |
| contents | Metal halide perovskites are promising materials for optoelectronic applications owing to their outstanding optical and electronic properties. Among them, all-inorganic perovskites such as CsPbBr$_3$ offer superior thermal and chemical stability. However, obtaining high-quality CsPbBr$_3$ thin films via solution processing remains challenging due to the precursor's low solubility, and current additive or solvent engineering strategies are often complex and poorly reproducible. High-pressure recrystallization has recently emerged as a promising route to improve film quality, yet its impact on film properties remains insufficiently explored. Here, we systematically investigate the morphological, structural, and optical properties of CsPbBr$_3$ thin films prepared by high-pressure recrystallization, in comparison with standard non-recrystallized films. Optimized recrystallization at 300 bar produces smooth, pinhole-free, single-phase 3D perovskite layers with sub-nanometer roughness, while the film thickness is precisely tunable via precursor concentration. The process enhances both grain and crystallite sizes, leading to amplified spontaneous emission with a reduced excitation threshold and improved photostability. Temperature-dependent X-ray diffraction further reveals the orthorhombic--tetragonal--cubic phase transition, consistent with single-crystal behavior. This study provides fundamental insights into pressure-driven recrystallization and establishes a reproducible, scalable approach for fabricating high-quality CsPbBr$_3$ films for optoelectronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_02177 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Beyond Spin Coating: Homogeneous All-Inorganic Perovskite Films via High-Pressure Recrystallization Miled, Asma Nguyen, Trong Tam Penuelas, José Benamrouche, Aziz Chevalier, Céline Hoang, Thi Kim Anh Trippé-Allard, Gaëlle Cassette, Elsa Devif, Brice Drouard, Emmanuel Deleporte, Emmanuelle Mai, Hong Hanh Bouazizi, Abdelaziz Seassal, Christian Nguyen, Hai Son Materials Science Applied Physics Metal halide perovskites are promising materials for optoelectronic applications owing to their outstanding optical and electronic properties. Among them, all-inorganic perovskites such as CsPbBr$_3$ offer superior thermal and chemical stability. However, obtaining high-quality CsPbBr$_3$ thin films via solution processing remains challenging due to the precursor's low solubility, and current additive or solvent engineering strategies are often complex and poorly reproducible. High-pressure recrystallization has recently emerged as a promising route to improve film quality, yet its impact on film properties remains insufficiently explored. Here, we systematically investigate the morphological, structural, and optical properties of CsPbBr$_3$ thin films prepared by high-pressure recrystallization, in comparison with standard non-recrystallized films. Optimized recrystallization at 300 bar produces smooth, pinhole-free, single-phase 3D perovskite layers with sub-nanometer roughness, while the film thickness is precisely tunable via precursor concentration. The process enhances both grain and crystallite sizes, leading to amplified spontaneous emission with a reduced excitation threshold and improved photostability. Temperature-dependent X-ray diffraction further reveals the orthorhombic--tetragonal--cubic phase transition, consistent with single-crystal behavior. This study provides fundamental insights into pressure-driven recrystallization and establishes a reproducible, scalable approach for fabricating high-quality CsPbBr$_3$ films for optoelectronic devices. |
| title | Beyond Spin Coating: Homogeneous All-Inorganic Perovskite Films via High-Pressure Recrystallization |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2511.02177 |