The Luminescence Properties of Graphene Quantum Dots
Ji-Lin Shen1*
1Department of Physics, Chung Yuan Christian University, Chung Li, Taiwan
* presenting author:Ji-Lin Shen, email:jlshen@cycu.edu.tw
Graphene quantum dots (GQDs), with lateral dimensions less than 100 nm, are a new class of graphene nanostructures. GQDs exhibit fascinating properties such as the low toxicity, biocompatibility, and strong photoluminescence (PL), which can be used in a wide variety of applications. Recently, we develop a strategy for the synthesis of the GQDs using pulsed laser ablation method. Structural and material properties of the synthesized GQDs were examined by Transmission electron microscopy (TEM), Ultraviolet-visible (UV-Vis) absorption, X-ray photoelectron (XPS) and Raman scattering measurements. The synthesized GQDs exhibit tunable PL emission with different excitation wavelengths. The PL mechanism of GQDs and their potential applications will be discussed.


Keywords: graphene quantum dots, photoluminescence