Journal of Materials Science

, Volume 54, Issue 23, pp 14469–14482 | Cite as

Luminescent materials comprised of wood-based carbon quantum dots adsorbed on a Ce0.7Zr0.3O2 solid solution: synthesis, photoluminescence properties, and applications in light-emitting diode devices

  • Xing Gao
  • Xinchao Gong
  • Tat Thang Nguyen
  • Wenxin Du
  • Xueqi Chen
  • Zihui Song
  • Rusong Chai
  • Minghui GuoEmail author
Electronic materials


In this study, a luminescent material of wood-based carbon quantum dots (CQDs)/Ce0.7Zr0.3O2 with a regular, uniform shape, and a high color purity was synthesized by a facile method. CexZr1−xO2 solid-solution oxides (x = 0.7) were prepared by a hydrothermal method, and CQDs were adsorbed on the as-obtained Ce0.7Zr0.3O2 nanoparticles. The crystal structure was identified by powder X-ray diffraction and Rietveld refinement. In addition, the effect of adsorbed CQDs on the luminescence properties of Ce0.7Zr0.3O2 was systematically investigated by Raman spectroscopy, elemental analysis, electron spin resonance spectroscopy, and photoluminescence spectroscopy, as well as decay curve and quantum yield (QY) measurements. Herein, a promising strategy of surface engineering, that is, reduction of the surface defect concentration in Ce0.7Zr0.3O2 by the adsorption of CQDs to decrease the nonradiative transition processes at defect sites was described. As expected, the adsorption of CQDs decreased the Ce–O bond length and the surface defect concentration of Ce0.7Zr0.3O2, thereby effectively decreasing the nonradiative transition processes and suppressing fluorescence quenching. Hence, CQDs/Ce0.7Zr0.3O2 with a perfect cubic structure exhibits a performance improvement in terms of the luminescence and QY value. Furthermore, a light-emitting diode device was fabricated using as-synthesized CQDs/Ce0.7Zr0.3O2, emitting apparent yellow light with a high color purity (93.3%), with International Commission on Illumination coordinates of (0.5239, 0.4531), and a low correlated color temperature (2271 K) under a driven current of 60 mA, suggesting that CQDs/Ce0.7Zr0.3O2 exhibits potential for practical applications.



This research was financially supported by the National Key Research and Development Program of China (2018YFD0600302) and the Fundamental Research Funds for the Central Universities (2572018AB01).

Supplementary material

10853_2019_3912_MOESM1_ESM.docx (128 kb)
Supplementary material 1 (DOCX 128 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Lab of Bio-based Material Science and Technology (Ministry of Education), College of Material Science and EngineeringNortheast Forestry UniversityHarbinPeople’s Republic of China
  2. 2.Vietnam National University of ForestryHanoiVietnam
  3. 3.Heilongjiang Forest Botanical GardenHarbinPeople’s Republic of China

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