Air-Stable Thin Films of Tin Halide Perovskite Nanocrystals by Polymers and Al2O3 Encapsulation
© 2024 The Authors. Published by American Chemical Society.
| Publié dans: | Chemistry of materials : a publication of the American Chemical Society. - 1998. - 36(2024), 22 vom: 26. Nov., Seite 11227-11235 |
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| Auteur principal: | |
| Autres auteurs: | , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2024
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| Accès à la collection: | Chemistry of materials : a publication of the American Chemical Society |
| Sujets: | Journal Article |
| Résumé: | © 2024 The Authors. Published by American Chemical Society. Tin halide perovskites are promising for optoelectronics, although their sensitivity to ambient conditions due to Sn(II) oxidation presents a challenge. Encapsulation techniques can mitigate degradation and facilitate advanced studies of the intrinsic properties. To study and improve the ambient stability of CsSnBr3 and CsSnI3 nanocrystal (NC) thin films, we explored various encapsulation methods: organic, inorganic, and hybrid. We employed three methods for organic encapsulation: co-deposition with NCs, co-deposition with an additional top layer, and in situ polymerization with NCs. We synthesized thin layers of alumina by using atomic layer deposition for inorganic encapsulation. While individual methods offered marginal improvements, the hybrid approach provided the best results. By employing a hybrid heterostructured thin-film strategy, with the NC layer covered by a thin layer of poly(methyl methacrylate) followed by a 40 nm alumina layer, the stability in air was improved from a few seconds to a record period of 15 days, a crucial advancement for the further exploration of tin halide perovskites |
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| Description: | Date Revised 02.12.2024 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
| ISSN: | 0897-4756 |
| DOI: | 10.1021/acs.chemmater.4c02261 |