Synthesis and luminescent characteristics of BaGa ₂ S ₄ :Eu ²⁺ Phosphor by solid‐state method

Abstract 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% H2/95% N2 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.