Enhanced bright green luminescence from GdOF:Ho^(3+) up-conversion phosphor via Yb^(3+) doping

查看全文 作　　者：Linjun [1]Qin;Yue [1]Guo;Jing [1]Xu;Lixi [1]Wang;Qitu [1]Zhang

机构地区：[1]College of Materials Science and Engineering,Nanjing Tech University,Nanjing,211816,China

出　　处：《Journal of Rare Earths》索引2024年第42卷第2期,共8页

基　　金：Project supported by the National Natural Science Foundation of China(51202111);Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。 摘　　要：In this paper,a series of GdOF-based green phosphors doped with Ho^(3+) and Yb^(3+) ions was prepared by a simple co-precipitation method.The crystal structure s and optical prope rties were investigated in detail.The intensity of the emission of GdOF:Yb^(3+),Ho^(3+) phosphors is enhanced by the effective energy transfer from Yb^(3+) to Ho^(3+),and the optimal luminescence is achieved with the Ho^(3+)doping amount of 0.1 mol%as well as Yb^(3+) doping amount of 5 mol%.Tunable UC emission of samples is achieved by adjusting the doping concentration of Ho^(3+) or Yb^(3+).The purity of the green UC emission is further improved by enhancing the excitation pumping power.In addition,logarithmic functions of green,red and nearinfrared radiation intensities were calculated versus logarithmic function of pump power for further study.A possible UC luminescence mechanism between Yb^(3+) and Ho^(3+) is discussed based on powerdependent UC luminescence spectrum and decay lifetimes.These results suggest that GdOF:Yb^(3+),Ho^(3+)phosphors with bright and high-purity green UC emission have potential applications in the fields of bioimaging,display and illumination. 关键词：UP-CONVERSION GdOF Lanthanide ions Rare earths

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Enhanced bright green luminescence from GdOF:Ho^(3+) up-conversion phosphor via Yb^(3+) doping

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