Synthesis and Luminescence Characteristics of SrS:Eu2+ Red Phosphor

SrS:Eu2+ phosphor has been well known for a long time for its properties of photo- stimulated luminescence and thermoluminescence and has been used for material for display (CRT or EL) or sensor. We have synthesized a SrS:Eu2+ red phosphor through the solid- state reaction under the reduction atmosphere (5% H2/ 95% N2) and investigated the luminescent properties. High luminescence efficiency of SrS: Eu 2+ red phosphor has been obtained through the simple process without toxic gas such as CS2 or H2S. The prepared phosphor shows a higher emission intensity (above 150%) than that of commercial phosphor. Also, it is possible to be applicated to the red phosphor for white LEDs which is generated to combine three wavelength (Red . Green . Blue) because of the high luminescence efficiency.