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Synthesis of graphene quantum dot/metal-organic framework nanocomposite as yellow phosphor for white light-emitting diodes

Abstract

A new luminescent composite material GQD@ZIF-8 was obtained by incorporating edge-sulfonated graphene quantum dots (GQDs) as an active fluorescent species into nanocrystals of Zeolitic Imidazolate Framework (ZIF-8) as both a stabilizer and a carrier by a simple, rapid, and eco-friendly approach. The as-synthesized GQD@ZIF-8 composite not only exhibit an excellent fluorescent property in aqueous solutions but also can emit bright fluorescence in a solid state due to the effective encapsulation by ZIF-8. The GQD@ZIF-8 nanocomposite was used as a novel yellow phosphor in the fabrication of white light-emitting diodes (WLEDs) based on a blue-light LED chip with a proximate CIE coordinate (0.33, 0.33) of highly pure white light and a relatively high color-rendering index.

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Publication details

The article was received on 12 Dec 2017, accepted on 13 Feb 2018 and first published on 14 Feb 2018


Article type: Paper
DOI: 10.1039/C7NJ04909A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Synthesis of graphene quantum dot/metal-organic framework nanocomposite as yellow phosphor for white light-emitting diodes

    D. Pan, L. Wang, Z. Li, B. Geng, C. Zhang, J. Zhan, L. Yin and L. Wang, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04909A

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