The Eu²⁺-doped Sr₆B₅PO₂₀ phosphor powders have been synthesized via co-precipitation method and subsequent reduction of the dopants in N₂/H₂ gas for tri-color compact fluorescent lamps application in industry. The average particle size of the phosphor powder was in the range of 100 nm to 1 mm. It has been found out that typical phases of Sr₆P₅BO₂₀, Sr₂P₂O₇, Sr₃P₂O₈, and Sr₃Eu(PO₄)₃ co-existed in the as-prepared powders. The annealing temperature has been varying in the range of 600 to 1100 °C to control the color emission of the powder. The luminescence emission peaks are in the range of 400 to 500 nm. These emission peaks are attributed to the 5d-4f transitions of Eu²⁺ ion. The as-prepared phosphor powders would be promissing components for producting white light fluorescent lamps.

Tải file Structral characterizations and optical properties of Eu2+ doped Sr6B5PO20 phosphor powders prepared via co-precipitation method. tại đây