Characteristics of A-(Mg, Zn)-S (A=Ca,Sr,Ba) for EL phosphor

Abstract

Effects of Mg and Zn doping into the CaS:Eu, SrS:Eu and BaS:Eu were studied. Ca_<0.8>Mg_<0.2>S:Eu, Sr_<0.6>Mg_<0.4>S:Eu and Ba_<0.6>Zn_<0.4>S:Eu phosphors had red PL with peak of 666 nm, 619 nm and 650 nm, respectively. The PL intensity of these materials was four or five times higher than that of undoped phosphors.