Fintech is rapidly developing around the world,with mobile Internet,Big Data,cloud computing,artificial intelligence(AI),and other information technologies integrated with financial business,and gradually moving from ...Fintech is rapidly developing around the world,with mobile Internet,Big Data,cloud computing,artificial intelligence(AI),and other information technologies integrated with financial business,and gradually moving from the“back office”to the“forefront.”Fintech has continuously released innovation-driven vitality,promoted China’s rapid progress to the global leading position in key fields such as payment and settlement,and resulted in world-renowned achievements.The essence of fintech boils down to finance and its core task is to apply information technology to improve the quality and efficiency of finance.展开更多
Solid-solution based luminescent materials have been widely explored due to their tunable optical properties in recent years. In this work, instead of more common cation-substitution approach, we investigated the lumi...Solid-solution based luminescent materials have been widely explored due to their tunable optical properties in recent years. In this work, instead of more common cation-substitution approach, we investigated the luminescence properties of Eu^2＋ and Mn^2 ＋ co-doped halophosphate solid solution Ca5（PO4）3（F0.8Cl0.2） via anion substitution synthesized by high temperature solid state reaction method. The formation of the solid solution was confirmed by X-ray diffraction （XRD） characterization, which indicates that the introduction of certain proportion of CI will not make significant change on the CaB（PO4）3F lattice, We also studied the energy transfer from Eu^2＋ to Mn^2＋ in the host so as to obtain white light emission via adjusting the doping concentrations of Eu^2＋ and Mn^2＋, The white light emission was achieved through combination of Eu^2＋ blue emission and Mn^2＋ red-orange emission with appropriate proportions. The results suggest that Ca5（PO4）3（F0.8Cl0.2）：0.01Eu^2＋＋,0.18Mn^2＋ could be a potential WLED phosphor working under ultraviolet excitation,展开更多
文摘Fintech is rapidly developing around the world,with mobile Internet,Big Data,cloud computing,artificial intelligence(AI),and other information technologies integrated with financial business,and gradually moving from the“back office”to the“forefront.”Fintech has continuously released innovation-driven vitality,promoted China’s rapid progress to the global leading position in key fields such as payment and settlement,and resulted in world-renowned achievements.The essence of fintech boils down to finance and its core task is to apply information technology to improve the quality and efficiency of finance.
基金Project supported by the National Natural Science Foundation of China(11574298,61635012)the National Key Research and Development Program of China(2016YFB0701001)
文摘Solid-solution based luminescent materials have been widely explored due to their tunable optical properties in recent years. In this work, instead of more common cation-substitution approach, we investigated the luminescence properties of Eu^2＋ and Mn^2 ＋ co-doped halophosphate solid solution Ca5（PO4）3（F0.8Cl0.2） via anion substitution synthesized by high temperature solid state reaction method. The formation of the solid solution was confirmed by X-ray diffraction （XRD） characterization, which indicates that the introduction of certain proportion of CI will not make significant change on the CaB（PO4）3F lattice, We also studied the energy transfer from Eu^2＋ to Mn^2＋ in the host so as to obtain white light emission via adjusting the doping concentrations of Eu^2＋ and Mn^2＋, The white light emission was achieved through combination of Eu^2＋ blue emission and Mn^2＋ red-orange emission with appropriate proportions. The results suggest that Ca5（PO4）3（F0.8Cl0.2）：0.01Eu^2＋＋,0.18Mn^2＋ could be a potential WLED phosphor working under ultraviolet excitation,
