Cesium lead halide perovskite nanocrystals (NCs) have gained enormous attention as promising light-emitting and light-converting materials. Most of their applications require embedding NCs in various matrices, which is a challenging task due to their low stability, especially in the case of red-emitting CsPbI3 NCs. In this work, a new approach is proposed allowing the formation of red-emitting perovskite NCs by anion exchange induced directly inside a solid polymer matrix using green-emitting CsPbBr3 NCs as templates and iodododecane as an iodine source. Moreover, a simple and efficient route to photo-assisted termination of the anion exchange reaction in the polymer composite after reaching desired optical properties is demonstrated. The findings allow the authors to pattern a thin composite film with an ultrashort UV laser resulting in a selective generation of green- and red-emitting features with a 15 µm resolution.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:91306 |
| Date | 22 May 2024 |
| Creators | Martin, Chantal, Prudnikau, Anatol, Orazi, Leonardo, Gaponik, Nikolai, Lesnyak, Vladimir |
| 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 | 2200201, 10.1002/adom.202200201, info:eu-repo/grantAgreement/European Union/H2020 | RIA/779373//MIcro Quantum Dot Light Emitting Diode and Organic LEDs DIrect Patterning/MILEDI |
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