Research on LiBaPO4: Re (Re= Tm3+ Tb3+ Tb3+/ Ce3+) phosphate based phosphors applied in white light LED

論文翻譯標題: 應用於白光發光二極體之磷酸系LiBaPO4: Re (Re= Tm3+ Tb3+ Tb3+/ Ce3+) 螢光材料之研究
  • 賴 炫霖

學生論文: Doctoral Thesis

摘要

In this dissertation we choose LiBaPO4 as host And doped with Tm3+ Tb3+ and Tb3+ Ce3+ ions to synthesis blue and green phosphors In the part of doped Tm3+ the phosphors was prepared by conventional furnace and its microstructure and photoluminescent properties were discussed In addition the microwave-assisted sintering method was used to prepare the phosphors under the same sintering conditions The results show that the phosphors prepared by the microwave- assisted method can be used to obtain with better crystallinity better phospor dispersion and better photoluminescence intensity In the part of doped Tb3+ the phosphors was prepared by conventional furnace and its microstructure and photoluminescent properties were discussed For the purpose of comparison additional Ce3+ sensitizer was used to prepare the phosphors under the same sintering conditions The results show that the best excitation band of the phosphor adding Ce3+ sensitizer can be adjusted from the medium ultraviolet to the near ultraviolet band For Tb3+ Ce3+ co-doped phosphor we additionally investigate its thermal stability and compare it with commercial YAG: Ce From the analysis results Tb3+ Ce3+ co-doped phosphor is better than the commercial YAG: Ce should be applied to high-power WLED
獎項日期2018 一月 31
原文English
監督員Shoou-Jinn Chang (Supervisor)

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