Making ZnS:Cu, a green phosphorescent material

Phosphors are used in Cathode Ray Tubes (CRT), Vacuum Fluorescent Displays (VFD), glow in the dark paint and other applications. This video shows the synthesis of ZnS:Cu, a green phosphor based on Zinc Sulfide. References: W. Yen, M. Weber, "Inorganic Phosphors", CRC press