Synthesis and Luminescent Characteristics of BaGa2S4: Eu2+ Phosphor by Solid-state Method

II-III2-(S, Se)(4) structured of phosphor have been used at various fields because they have high luminescent efficiency and broad emission band. Among these phosphors, europium doped BaGa2S4 was prepared by solid-state method. We investigated the possibility of applying [ ] due to emissive property of UV region. Also, general sulfide phosphors were synthesized by using injurious H2S CS2 gas. However, this study prepared BaGa2S4: Eu2+ phosphor is addition to excess sulfur under 5% H-2/95% N-2 reduction atmosphere. So, this process could involved large scale synthesis because of non-harmfulness and simple process. The photo-luminescence efficiency of the prepared BaGa2S4: Eu2+ phosphor increased by 20% compared with commercial SrGa2S4: Eu2+ phosphor. From this, we could conclude that the prepared BaGa2S4: Eu2+ could be applied to green phosphor for white LED of three wavelengths.