Size‐Dependent Structural and Optical Characteristics of Glucose‐Derived Graphene Quantum Dots

  title={Size‐Dependent Structural and Optical Characteristics of Glucose‐Derived Graphene Quantum Dots},
  author={Libin Tang and Rong-bin Ji and Xueming Li and Kar Seng Teng and Shu Ping Lau},
  journal={Particle \& Particle Systems Characterization},
  • L. Tang, R. Ji, S. Lau
  • Published 1 June 2013
  • Physics, Materials Science
  • Particle & Particle Systems Characterization
It is of scientific importance to obtain graphene quantum dots (GQDs) with narrow‐size distribution in order to unveil their size‐dependent structural and optical properties, thereby further to explore the energy band diagram of GQDs. Here, a soft‐template microwave‐assisted hydrothermal method to prepare GQDs with diameters less than 5 nm ± 0.55 nm is reported. The size‐dependent photoluminescence (PL) quantum yield (QY) decay lifetime and electron energy loss spectroscopy (EELS) of the GQDs… 

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