One-step hydrothermal synthesis of fluorescence carbon quantum dots with high product yield and quantum yield

Yanting Yanting Xie, Jingxia Zheng, Yaling Wang, Junli Wang, Yongzhen Yang, Xuguang Liu, Yong Chen

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10 Citations (Scopus)
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Abstract

A one-step hydrothermal synthesis of nitrogen and silicon co-doped fluorescence carbon quantum dots (N,Si-CQDs), from citric acid monohydrate and silane coupling agent KH-792 with a high product yield (PY) of 52.56% and high quantum yield (QY) of 97.32%, was developed. This greatly improves both the PY and QY of CQDs and provides a new approach for a large-scale production of high-quality CQDs. Furthermore, N,Si-CQDs were employed as phosphors without dispersants to fabricate white light-emitting diodes (WLEDs) with the color coordinates at (0.29, 0.32). It is suggested that N,Si-CQDs have great potential as promising fluorescent materials to be applied in WLEDs.

Original languageEnglish
Article number085406
JournalNanotechnology
Volume30
Issue number8
DOIs
Publication statusPublished - 2 Jan 2019

Keywords

  • carbon quantum dots
  • high fluorescence quantum yield
  • high product yield
  • hydrothermal reaction
  • silane coupling agent

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