Preparation of N-doped carbon dots based on starch and their application in white LED

Xinghua Liu, Jingxia Zheng, Yongzhen Yang, Yong Chen, Xuguang Liu

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12 Citations (Scopus)
32 Downloads (Pure)

Abstract

N-doped carbon dots (CDs) were synthesized simply and economically by a one-step hydrothermal method using starch as a carbon source and ethylenediamine (EDA) as a nitrogen dopant. The prepared CDs possess the properties of excitation-wavelength dependence and emit blue fluorescence under the excitation wavelength of 365 nm. CDs/starch composite was prepared to achieve the solid-state emission of CDs and their application in light emitting diode (LED) as fluorescent materials. White LED, with CIE coordinates of (0.33, 0.37) and correlated color temperature of 5462 K, was obtained by combining CDs/starch and ultraviolet LED light source, indicating that starch-based CDs have the promising potential in the field of optoelectronic devices
Original languageEnglish
Pages (from-to)530-536
Number of pages7
JournalOptical Materials
Volume86
Early online date8 Nov 2018
DOIs
Publication statusPublished - 1 Dec 2018

Keywords

  • Starch
  • Carbon dots
  • Light emitting diode
  • White light

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