Comparative study on photo and electroluminescence properties of Cu-doped ZnS

Distinct differences observed in the alternating current powder electroluminescence (ACPEL) and photoluminescence (PL) characteristics of lab-made ZnS:Cu(1%) phosphor have been explained based on variation in donor and acceptor traps (levels) assisted electron-hole recombination upon optical and electrical excitations. The results were also compared with that of commercially available ZnS based phosphor. The fabricated display panel using …