Simultaneous encapsulation and structural behavior of high-utility CsPbX3 quantum dots in 3D dendritic mesoporous silica nanospheres
Cesium lead halide (CsPbX3) perovskite quantum dots (PQDs) instability is solved by sealing them in 3D form double-layered mesoporous silica nanospheres (3D-MSNs) with uniform particle size. When compared to other commercial 2D mesoporous silica materials, 3D-MSNs can better encapsulate PQD precurso...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Materials Today Advances |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590049825000384 |
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| Summary: | Cesium lead halide (CsPbX3) perovskite quantum dots (PQDs) instability is solved by sealing them in 3D form double-layered mesoporous silica nanospheres (3D-MSNs) with uniform particle size. When compared to other commercial 2D mesoporous silica materials, 3D-MSNs can better encapsulate PQD precursors within their pores. After introducing CsX and PbX2 into 3D-MSN pores, calcination provides simultaneous production of CsPbX3 and coverage for outer-layer 3D-MSN pores, resulting in the formation of a water and light-resistant CsPbX3@3D-MSNs composite material. The growth mechanism of PQDs inside 3D-MSNs and their thermal phase structure behavior are deeply studied. Heating and cooling at 25–350 °C affects the crystal phase of PQDs (δ, α, β, and γ) and their photoluminescence properties. The CsPbX3@MSNs composite material exhibits high stability and dispersity, making it suitable for light-emitting diodes and stretchable, self-healable, luminescent thin films. |
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| ISSN: | 2590-0498 |