稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2014年
5期
404-408
,共5页
杨志平%董宏岩%刘鹏飞%侯春彩%梁晓双%王灿%鲁法春
楊誌平%董宏巖%劉鵬飛%侯春綵%樑曉雙%王燦%魯法春
양지평%동굉암%류붕비%후춘채%량효쌍%왕찬%로법춘
red phosphors%rare earths%LiY(MoO4)2%photoluminescence
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 prop-erties were determined for various concentrations of Sm3+-doped LiY(MoO4)2 host, and the luminescence intensity had the best value whenx=0.02 in LiY1-x(MoO4)2:xSm3+.
