Abstract
The Ce3+/Eu2+ activated Ba3YB3O9 and Ba1·5Sr1·5YB3O9 phosphors were prepared using solid state reactions under the reducing atmosphere. Then, their phase and fluorescence performance were investigated carefully. The XRD measurements demonstrate that the synthesized phosphors have the single phase. For the Ce3+/Eu2+ single activated Ba3YB3O9 and Ba1·5Sr1·5YB3O9 phosphors, they respectively show blue and yellow emission, meaning it is possible to generate white light by the Ce3+/Eu2+ coactivated phosphors. Due to the Ce3+ → Eu2+ energy transfers, tunable luminescence was generated by the Ce3+/Eu2+ coactivated Ba3YB3O9 and Ba1·5Sr1·5YB3O9 phosphors. The light of most of the Ce3+/Eu2+ coactivated Ba3YB3O9 and Ba1·5Sr1·5YB3O9 phosphors locates in the white light region. In addition, the substitution of Sr2+ to Ba2+ benefits to obtain the full spectrum white light.
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