Dual-mode luminescence anti-counterfeiting and white light emission of NaGdF₄:Ce,Eu,Tb/carbon dot hydrophilic nanocomposite ink

Abstract

:Ce,Eu,Tb/CD composite ink was prepared by an easy physical mixing method. Because of the electrostatic self-assembly effect, the color adjustable luminescence was achieved in a few seconds, and the white light emission with color coordinates of (0.32, 0.32) was obtained. A dual-mode luminescence anti-counterfeiting pattern was designed and achieved by excitation with ultraviolet light at 254 nm and 365 nm.

Topics & Concepts