稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2014年
8期
686-690
,共5页
刘丽莎%陈昊鸿%刘必秋%张辉%唐彬%冯贤娟%孙志嘉%赵景泰
劉麗莎%陳昊鴻%劉必鞦%張輝%唐彬%馮賢娟%孫誌嘉%趙景泰
류려사%진호홍%류필추%장휘%당빈%풍현연%손지가%조경태
lutetium oxyfluoride%hydrothermal%nanocrystal%scintillator%rare earths
To explore novel nano-scintillator with a controllable architecture, pure and Eu3+doped lutetium oxyfluoride (Lu7O6F9) powder were synthesized by combining mild hydrothermal method and solid state calcination approach. The products were all pure orthorhombic Vernier phase demonstrated by X-ray powder diffraction (XRD). The detailed crystal structure was also studied by Reitveld refinement. Lath-like microcrystals composed of nanoparticles with unique hollow tube of the products were supported by the images of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Excited by X-ray with W as the target, the pure product showed intense broad emission with the peak at about 400 nm suitable for modern photoelectric multiplier tube (PMT), while the Eu3+doped sample transferred the incident energy to Eu3+ions and gave strong 5D0→7Fj (j=0, 1, 2 and 4) emis-sion, which fitted for imaging and labeling measurements. From the luminescent properties, both pure and Eu3+-doped products are potential excellent scintillator for X-ray imaging and other high energy detectors, and the pure product is also a good host candidate for rare earth doping.