Deep ultraviolet photoluminescence of water-soluble self-passivated graphene quantum dots.

  title={Deep ultraviolet photoluminescence of water-soluble self-passivated graphene quantum dots.},
  author={L. Tang and R. Ji and Xiangke Cao and J. Lin and H. Jiang and Xueming Li and K. S. Teng and Chi Man Luk and S. Zeng and J. Hao and S. P. Lau},
  journal={ACS nano},
  volume={6 6},
  • L. Tang, R. Ji, +8 authors S. P. Lau
  • Published 2012
  • Materials Science, Medicine
  • ACS nano
  • Glucose-derived water-soluble crystalline graphene quantum dots (GQDs) with an average diameter as small as 1.65 nm (∼5 layers) were prepared by a facile microwave-assisted hydrothermal method. The GQDs exhibits deep ultraviolet (DUV) emission of 4.1 eV, which is the shortest emission wavelength among all the solution-based QDs. The GQDs exhibit typical excitation wavelength-dependent properties as expected in carbon-based quantum dots. However, the emission wavelength is independent of the… CONTINUE READING


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