期刊
MATERIALS LETTERS
卷 259, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2019.126846
关键词
Phosphors; Graphene quantum dots; Luminescence quantum yield; Time-resolved photoluminescence
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2019R1A2C1089080]
- National Research Foundation of Korea [2019R1A2C1089080] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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: similar to 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. (C) 2019 Elsevier B.V. All rights reserved.
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