Luminescent Characteristics of SrS : Ce and SrS : Cu of Blue Emitting EL Materials

Abstract

Luminescent characteristics of blue-green emitting SrS : Ce and blue emitting SrS : Cu have been studied. The luminescent characteristics of SrS : Ce powder phosphors were improved by adding charge compensators to Ce^<3+> luminescent centers. Elecroluminescent characteristics of SrS : Ce thin films were also improved. SrS : Cu thin films, which were prepared by hot wall deposition with alternating supply of source materials, showed blue photoluminescence with a peak wavelength at 471nm.