A METHOD FOR PREPARING A SULFIDE-BASED PHOSPHOR AND A SULFIDE-BASED PHOSPOR PREPARED BY THE SAME

摘要

The present invention comprises the steps of first heat treating a mixture of a Group 2 element-containing compound, a Group 13 element-containing compound, and an activator element-containing compound under an atmospheric atmosphere containing oxygen; And a second heat treatment of the first heat treatment product under an H ₂ S atmosphere, and a sulfide-based phosphor prepared by the above method. The sulfide-based phosphor has improved luminance while maintaining excellent color purity.