利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN102199426A 稳定红色荧光材料及其制备方法、增强发光效率的方法 失效 - 权利终止

稳定红色荧光材料及其制备方法、增强发光效率的方法
摘要：
本发明提供一种稳定红色荧光材料及其制备方法、增强发光效率的方法。所述稳定红色荧光材料是白光LED用新型硼酸盐红色荧光材料，其化学组成式为Na3Ca1-2xB5O10:xEu3+，xM+，其中，Na3Ca1-2xB5O10为基质，Eu3+是掺入的稀土离子，M+是电荷补偿离子，为碱金属离子Li+、Na+、K+中的一种或多种，0.005≤x≤0.3。本发明采用两步煅烧法合成硼酸盐红色荧光材料Na3Ca1-2xB5O10:xEu3+，xM+，所制备的硼酸盐红色荧光材料可以被200～470nm的紫光、蓝光LED激发，且发射出580～630nm范围内高强度的稳定红光，其是一种适于蓝光、紫外或近紫外光激发的白光LED用硼酸盐红色荧光材料。
摘要（英）：

The invention provides a stable red fluorescent material, its preparation method and a method for enhancing luminous efficiency. The stable red fluorescent material is a novel borate red fluorescent material used for white light LEDs, the chemical composition of the stable red fluorescent material is Na3Ca1-2xB5O10 : xEu<3+>, xM<+>, wherein the Na3Ca1-2xB5O10 is taken as a matrix, Eu<3+> is takenas a doped rare earth ion, M<+> is a charge compensation ion and is one or more of alkali metal ions Li<+>, Na<+>, K<+>, wherein 0.05<=x<=0.3. According to the invention, the borate red fluorescent material Na3Ca1-2xB5O10: xEu<3+>, xM<+> is synthesized by a two-step calcining method, the prepared borate red fluorescent material is capable of being excited by purple light LEDs or blue light LEDs of 200 to 470 nm, and the stable red light with high strengths ranged from 580 to 630 nm is emitted. The borate red fluorescent material is used for white light LEDs excited by blue light, ultraviolet light or near ultraviolet light.

公开/授权文献
0/0