文献类型：期刊文献

英文题名：Influence of Dy3+ coactivator on the luminescence properties of Gd2O2SiTb3+ phosphor

作者：Wang, Fei[1]; Liu, Dachun[1]; Yang, Bin[1]; Zhang, Jinchao[2]; Dai, Yongnian[1]

机构：[1] National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, And Yunnan Provincial Key Laboratory of Nonferrous Vacuum Metallurgy, Kunming, Yunnan 650093, China; [2] Inorganic Materials Department, East China University of Science and Technology, Shanghai 200237, China

年份：2012

卷号：111

期号：2

外文期刊名：Journal of Applied Physics

收录：EI(收录号：20124115541908)

语种：英文

外文关键词：Dysprosium compounds - Metal ions - Phosphors - Fluorescence spectroscopy - Energy transfer - Silicon compounds - Crystal structure - Gadolinium compounds - Precipitation (chemical) - Rare earths - Solid state reactions - Luminescence

摘要：Gd2O2SiTb, Dy phosphor were synthesized by co-precipitation method combined with solid-state reactions. The crystal structure and luminescent properties were investigated in this paper. It was confirmed that no new phase was introduced by the analysis of X-ray diffractions (XRD) and fluorescence spectroscopy. It was also illustrated that the lattice size was decreased by doping Dy3+ ions. The results showed that the Dy3- coactivator had a remarkable influence on the spectral properties of the Gd2O2SiTb phosphor and can be taken as rare earth ion detector to determine the micro-structure of phosphors. Especially the cross relaxation between Tb3- and Dy3- may take place to form the non-radiative energy transfer. Dy3- as the coactivator added in Gd2O2SiTb could enhance the luminescence and not disturb its other primary properties. With Dy3- concentration increased, the intensity of 4F92-H 13/2 transition at 578 nm was increased further and the emission of 5D4-7Fj transition was highly improved to cause greener emission. ? 2012 American Institute of Physics.