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21.
公开(公告)号:US5154852A
公开(公告)日:1992-10-13
申请号:US794099
申请日:1991-11-18
申请人: Chung-Nin Chau
发明人: Chung-Nin Chau
CPC分类号: C09K11/7777
摘要: A lanthanum cerium terbium gadolinium phosphate phosphor has the composition La.sub.1-x-y-z Ce.sub.x Tb.sub.y Gd.sub.z PO.sub.4, where x=0.2 to 0.45, y=0.127 to 0.137, and z=0.001 to 0.1. The phosphor has improved brightness and/or maintenance over a lanthanum cerium terbium phosphate phosphor without gadolinium. The phosphor can be prepared by reacting a lanthanum cerium terbium gadolinium oxide with boron phosphate in the presence of a flux forming compound containing lithium in an inert or reducing atmosphere.
摘要翻译: 镧铈铽钆磷酸盐荧光体的组成为La1-x-y-zCexTbyGdzPO4,其中x = 0.2〜0.45,y = 0.127〜0.137,z = 0.001〜0.1。 与没有钆的镧铈铽磷酸盐荧光体相比,磷光体具有改善的亮度和/或维护性。 荧光体可以通过在惰性或还原性气氛中在含锂的助熔剂形成化合物的存在下使镧铈镧钆氧化物与硼酸磷反应来制备。