The Sr₆P₅BO₂₀: Eu phosphor powders have been synthesized via co-precipitation method for the purpose of industrial applications in tri-color compact fluorescent lamps with the Eu³⁺ doped concentration of 1 to 5%. The structure and optical properties of the material are investigated by SEM image, X-ray spectra and photoluminescence spectra. The phosphor powders exist in the shape as rice grains with the size of from 3 to 5 µm. The results demonstrate that the prepared phosphor powders are multi-phase materials. The phase stability is high when the calcination temperature is from about 900 to 1200 ⁰C. The characteristic emission peaks at 590, 612, and 702 nm are attributed to the transition of Eu³⁺ from ⁵D₀ level to ⁷F₁, ⁷F₂ and ⁷F₄ levels, respectively.

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