Quantum dot scaffold phosphors: Maximizing luminescence quantum yield via different stock environments
| Autor: | Kwang-Su Seong, Aya Hekmet Makki, Si-Hyun Park, Anuj Kumar, Mirgender Kumar |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Photoluminescence
Materials science Graphene Mechanical Engineering Phosphor Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention Polymerization Mechanics of Materials law Quantum dot Self-healing hydrogels General Materials Science 0210 nano-technology Porosity Luminescence |
| Zdroj: | Materials Letters. 259:126846 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2019.126846 |
| Popis: | This paper presents a novel concept for quantum-dots (QDs) phosphor plates using a polymer scaffold matrix. Here, graphene quantum-dots (GQDs) has utilized as the luminescent material in a polymeric scaffold prepared by free-radical polymerization followed by freeze-drying. The highly porous scaffold (porosity: ~60%, pore size in broad micron size) maintained the individual identity of the quantum dots for the beauty of high luminescence quantum yield, which is necessary for fabricating efficient phosphors. These outcomes were strongly reinforced by time-resolved photoluminescence. This study offers a systematic approach for tuning the luminescence property of quantum dots in different states such as powders, liquids, hydrogels, and freeze-dried scaffolds. |
| Databáze: | OpenAIRE |
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