Photophysical properties of graphene quantum dots in 2D material

YU WEN LAI^1*, RUTH JEANE SOEBROTO¹, HSIU YING HUANG¹, CHI TSU YUAN¹

¹Department of Physics, Chung Yuan Christian University, Taoyuan City, Taiwan

* Presenter:YU WEN LAI, email:lilianlai90214@gmail.com

Tungsten trioxide (WO₃), a two-dimensional material known for its coloring efficiency and reversibility, is commonly used in electrochromic devices (ECDs). However, WO₃ has some drawbacks, such as low stability and slow on/off switching time. In this research, graphene quantum dots (GQDs), a zero-dimensional material with high electrical conductivity and good optical properties, were utilized to overcome the drawbacks of WO₃ by forming 0D/2D heterostructure. The photophysical properties of the heterostructure were measured using fluorescence microscope integrated with spectrophotometer. Results show the addition of GQDs into WO₃ will change the charge transfer rates, thus, overall performance of the ECDs could be enhanced.

Keywords: Tungsten trioxide, Heterostructure, Fluorescence microscope, Charge transfer