CALCIUM FLUORIDE
    3.
    发明申请
    CALCIUM FLUORIDE 审中-公开
    氟化钙

    公开(公告)号:WO00063301A1

    公开(公告)日:2000-10-26

    申请号:PCT/GB2000/001378

    申请日:2000-04-17

    Abstract: The present invention relates to a doped calcium fluoride and in particular to a calcium fluoride precipitate doped with Eu and to a method for producing such a phosphor. Conventionally techniques such as disclosed in, "Ion-beam induced white luminescence of calcium fluoride implanted with both Eu and Tb ions", Aono et al, Jpn. J. Appl. Phys. Vol.32 (1993) pp 3851-3853, Part 1, No. 9A, September 1993 (Aono) produce Eu and Tb implanted calcium fluoride (CaF2). However, there are significant disadvantages associated with using the Aono technique such as the duration of manufacture and the quality of the resulting product. Therefore, an embodiment of the present invention provides a calcium fluoride precipitate doped with ions. Preferably, the calcium fluoride precipitate is doped with at least one of a plurality of lanthanide ions, preferably Eu , Eu , ions of Tb or Dy, or at least one group IIIb ion, preferably, ions of T1. Accordingly, an embodiment of the present invention provides a method for manufacturing a calcium fluoride precipitate, the method comprising the steps of producing a dopant solution using a salt of at least a first dopant and a solvent for that salt; producing a solution of CaCl2; mixing the dopant solution and CaCl2 solution with hydrogen fluoride to produce a calcium fluoride precipitate doped with ions of the first dopant.

    Abstract translation: 本发明涉及一种掺杂的氟化钙,特别涉及掺杂有Eu的氟化钙沉淀物,以及涉及这种荧光体的制造方法。 通常,诸如“离子束诱导的掺入Eu和Tb离子的氟化钙的白光发光”中所公开的技术,Aono等人,Jpn。 J.Appl。 物理学。 Vol.32(1993)pp 3851-3853,第1部分,第9A期,1993年9月(Aono)产生Eu和Tb注入的氟化钙(CaF 2)。 然而,与使用Aono技术相关的显着缺点如制造的持续时间和所得产品的质量。 因此,本发明的一个实施方案提供掺杂有离子的氟化钙沉淀。 优选地,氟化钙沉淀物掺杂有多种镧系元素离子,优选Eu 2+,Eu 2+,Tb或Dy的离子或至少一种IIIb族离子中的至少一种,优选地, T1。 因此,本发明的一个实施方案提供了一种制造氟化钙沉淀物的方法,该方法包括以下步骤:使用至少第一掺杂剂的盐和该盐的溶剂制备掺杂剂溶液; 产生CaCl 2溶液; 将掺杂剂溶液和CaCl 2溶液与氟化氢混合以产生掺杂有第一掺杂剂的离子的氟化钙沉淀。

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