University of Hertfordshire

From the same journal

By the same authors


  • Yanting Yanting Xie
  • Jingxia Zheng
  • Yaling Wang
  • Junli Wang
  • Yongzhen Yang
  • Xuguang Liu
  • Yong Chen
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Original languageEnglish
Article number085406
Publication statusPublished - 2 Jan 2019


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.

ID: 15786963