PL and EL Characteristics in Eu-activated Multicomponent Oxy-sulfide Thin-Film Phosphors Using Various lla-La-O-S Host Materials

摘要

Red-emitting phosphor thin films using various Eu-activated multicomponent oxy-sulfides were prepared by sulfurizing oxide phosphors after magnetron sputtering deposition. Intense photoluminescent (PL) and electroluminescent (EL) emissions with spectral changes were observed from phosphor thin films prepared with various Eu contents using multicomponent Ba-La-O-S, Sr-La-O-S or Ca-La-O-S as a host material.