Photoluminescence properties of Sm3+-doped LiY（MoO4）2 red phosphors
来源期刊：Journal of Rare Earths2014年第5期
论文作者：杨志平 董宏岩 刘鹏飞 侯春彩 梁晓双 王灿 鲁法春
文章页码：404 - 408
摘 要：A series of novel Sm3+-doped LiY（MoO4）2 red phosphors under the UV excitation were synthesized by solid state reaction at 800 oC for 7 h. The data measured by X-ray diffraction（XRD） indicated that the samples were all pure phases of LiY（MoO4）2. Their excitation spectra had a broad band ranging from 250 to 350 nm and several sharp peaks. The centers of the peaks were located at about 365 nm（6H5/2→4D3/2）, 378 nm（6H5/2→6P7/2）, 406 nm（6H5/2→4F7/2）, 420 nm（6H5/2→6P5/2）, 442 nm（6H5/2→4G9/2）, 471 nm（6H5/2→4I13/2） and 482 nm（6H5/2→4I9/2）, respectively. The strongest emission was excited by 406 nm, and the main emissions were located at 568 nm（4G5/2→6H5/2）, 610 nm（4G5/2→6H7/2）, 649 nm（4G5/2→6H9/2） and 710 nm（4G5/2→6H11/2）. Photoluminescence properties were determined for various concentrations of Sm3+-doped LiY（MoO4）2 host, and the luminescence intensity had the best value when x=0.02 in LiY1–x（MoO4）2:xSm3+.
杨志平，董宏岩，刘鹏飞，侯春彩，梁晓双，王灿，鲁法春
College of Physics Science and Technology,Hebei University
摘 要：A series of novel Sm3+-doped LiY（MoO4）2 red phosphors under the UV excitation were synthesized by solid state reaction at 800 oC for 7 h. The data measured by X-ray diffraction（XRD） indicated that the samples were all pure phases of LiY（MoO4）2. Their excitation spectra had a broad band ranging from 250 to 350 nm and several sharp peaks. The centers of the peaks were located at about 365 nm（6H5/2→4D3/2）, 378 nm（6H5/2→6P7/2）, 406 nm（6H5/2→4F7/2）, 420 nm（6H5/2→6P5/2）, 442 nm（6H5/2→4G9/2）, 471 nm（6H5/2→4I13/2） and 482 nm（6H5/2→4I9/2）, respectively. The strongest emission was excited by 406 nm, and the main emissions were located at 568 nm（4G5/2→6H5/2）, 610 nm（4G5/2→6H7/2）, 649 nm（4G5/2→6H9/2） and 710 nm（4G5/2→6H11/2）. Photoluminescence properties were determined for various concentrations of Sm3+-doped LiY（MoO4）2 host, and the luminescence intensity had the best value when x=0.02 in LiY1–x（MoO4）2:xSm3+.
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