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Toward Efficient Dual-Emissive Carbon Dots through Sulfur and Nitrogen Co-Doped

Abstract

The unique S and N co-doped Carbon dots (S,N-C-dots) were synthesized via one-pot hydrothermal method. The S,N-C-dots not merely possess relatively high photoluminescence (PL) quantum yield (QY) (43%), but 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. We achieved a series of solid-state lighting materials by using S,N-C-dots as doping fluophor, such as silica encapsulated C-dots (silica/C-dots), light conversion film (LCF) and white-light-emitting diodes (WLED). We have done some comparative experiments to prove the unique properties of S,N-C-dots are ascribed to the co-doped effects of S and N atoms. The yellow emission is from the intrinsic state emission and the blue emission is from the surface energy traps emission. This study presents a facile preparation of high-efficient dual-emissive S,N-C-dots and provides a new strategy to develop various solid-state lighting materials.

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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, Accepted Manuscript
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    Toward Efficient Dual-Emissive Carbon Dots through Sulfur and Nitrogen Co-Doped

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

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