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Issue 32, 2017
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Towards efficient dual-emissive carbon dots through sulfur and nitrogen co-doped

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Abstract

Herein, unique S and N co-doped carbon dots (S,N-C-dots) were synthesized via a one-pot hydrothermal method. The S,N-C-dots not only possess a relatively high photoluminescence (PL) quantum yield (QY) (43%), but also present unique optical properties with dual-emission (blue and yellow) and excitation-independent characteristics. It is extremely rare for bare carbon dots (C-dots) to have dual-emission under single excitation wavelength. Herein, we achieved a series of solid-state lighting materials, such as silica-encapsulated C-dots (silica/C-dots), light conversion films (LCFs), and white-light-emitting diodes (WLEDs), using S,N-C-dots as a doping fluorophore. Moreover, we conducted some comparative experiments to prove that the unique properties of the S,N-C-dots were ascribed to the co-doping effects of S and N atoms. The yellow emission originates from the intrinsic state emission and the blue emission originates from the surface energy trap emission. This study presents a facile preparation of highly efficient dual-emissive S,N-C-dots and provides a new strategy to develop various solid-state lighting materials.

Graphical abstract: Towards efficient dual-emissive carbon dots through sulfur and nitrogen co-doped

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Publication details

The article was received on 26 Apr 2017, accepted on 10 Jul 2017 and first published on 11 Jul 2017


Article type: Review Article
DOI: 10.1039/C7TC01819C
Citation: J. Mater. Chem. C, 2017,5, 8014-8021
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    Towards efficient dual-emissive carbon dots through sulfur and nitrogen co-doped

    W. Zhou, J. Zhuang, W. Li, C. Hu, B. Lei and Y. Liu, J. Mater. Chem. C, 2017, 5, 8014
    DOI: 10.1039/C7TC01819C

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