Deep Ultraviolet Photoluminescence of Water-Soluble Self-Passivated Graphene Quantum Dots

Glucose-derived water-soluble crystalline graphene quantum dots with an average diameter as small as 1.65 nm were prepared by a facile microwave-assisted hydrothermal method

Libin Tang; Rongbin Ji; Xiangke Cao; Jingyu Lin; Hongxing Jiang; Xueming Li; Kar Seng Teng; Chi Man Luk; Songjun Zeng; Jianhua Hao; Shu Ping Lau

2012

Scholarcy highlights

  • Glucose-derived water-soluble crystalline graphene quantum dots with an average diameter as small as 1.65 nm were prepared by a facile microwave-assisted hydrothermal method
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  • The emission wavelength is independent of the size of the GQDs
  • The unique optical properties of the GQDs are attributed to the self-passivated layer on the surface of the GQDs as revealed by electron energy loss spectroscopy
  • The GQDs are capable of converting blue light into white light when the GQDs are coated onto a blue light emitting diode
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