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

• Published in: 中国稀土学报：英文版 2012, Vol.30 (12), p.1199-1202
• Main Author: 杨志平 韩月 宋延春 赵引红 刘鹏飞
• Format: Article
• Language: English
• Subjects: X-射线衍射; 发光强度; 发光性能; 发光特性; 合成; 掺杂浓度; 荧光粉
• ISSN: 1002-0721; 2509-4963

A series of Sr3Bi1-x（PO4）3： xSm^3＋phosphors were prepared by solid state method at 1250 ℃ for 4 h. X-ray diffraction （XRD） indicated 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→4113/2）. 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 different 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.