CsPbBr₃ is an inorganic perovskite material that is promising for light-emitting applications. Such applications are known to benefit from an island-type active layer structure, which enhances the device’s light emission efficiency. Here, the impact of the environment on the island formation in thermally deposited bilayers of CsPbBr₃/LiBr is investigated. It is demonstrated that the island formation occurs only in humid environments, leading to an enhancement of the photoluminescence quantum yield by a factor of 350. Timeresolved grazing-incidence wide-angle X-ray scattering experiments document the island growth process and reveal that the LiBr has already changed the perovskite crystal orientation prior to the island formation.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:88273 |
| Date | 02 February 2024 |
| Creators | Antrack, Tobias, Kroll, Martin, Merten, Lena, Albaladejo-Siguan, Miguel, Hinderhofer, Alexander, Konovalov, Oleg V., Jankowski, Maciej, Benduhn, Johannes, Schreiber, Frank, Vaynzof, Yana, Leo, Karl |
| Publisher | Wiley-VCH |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 2195-1071, 2201408, 10.1002/adom.202201408, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/Perowskit-Halbleiter: Von fundamentalen Eigenschaften zur Anwendung/402726906//Perovskite Heterostructure Investigations using Vacuum Evaporation and X-ray diffraction/SPP 2196, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/Perowskit-Halbleiter: Von fundamentalen Eigenschaften zur Anwendung/424216076//Perowskit Defekte: Physik, Evolution und Stabilität/PERFECT PVs |
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