Synthesis and luminescence properties of a novel red Sr₃Bi（PO₄）₃:Sm³⁺ phosphor

杨志平，韩月，宋延春，赵引红，刘鹏飞

College of Physics Science and Technology,Hebei University

摘 要：A series of Sr3Bi1-x（PO4）3: xSm3+phosphors were prepared by solid state method at 1250 °C for 4 h. X-ray diffraction （XRD） indi-cated that the sample was of a pure phase of Sr3Bi（PO4）3. The main excitation peaks were located at 343 （6H5/2→4H9/2）, 360 （6H5/2→4D3/2）, 373 （6H5/2→6P7/2）, 400 （6H5/2→4F7/2）, 414 （6H5/2→6P5/2） and 467 nm （6H5/2→4I13/2）. The main emission were located at 563 （4G5/2→6H5/2）, 599 （4G5/2→6H7/2）, 646 （4G5/2→6H9/2） and 708 nm （4G5/2→6H11/2）. The intensest emission was excited by 400 nm. We studied the effect of differ-ent doping concentrations of Sm3+ activator on the luminescence properties and found that the luminescent intensity first increased with Sm3+ concentration increasing, and then decreased. The luminescent intensity had the best value when x=0.04. The chromaticity coordinates of the sample Sr3Bi0.96（PO4）3:0.04Sm3+ were （x=0.57, y=0.36）, and the lifetime was 2.12 ms.

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