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本文研究了YAG:Ce荧光粉的色点红移的现象。当YAG晶格点阵中的Y被Gd激发或添加了Pr作为Ce的共同催化剂时就会发生这种现象。测量了在(Y,Gd)AG:Ce和YAG:Ce,Pr荧光粉样品内部的效率,其激发光线的波长为470nm。其结果表明这两种荧光粉的发光效率分别随着Gd和Pr聚集而降低。SrGa2S4:Eu。是另外一种常用的转换蓝光LED的颜色的荧光粉。室温下,这种荧光粉效率很高,理论上其发光效率比YAG:Ce的发光效率高出33%。对这种荧光粉效率的测量结果表明其制作过程是影响性能的主要因素。将这种荧光粉印刷在放在一个或多个蓝光LED前面的屏幕的表面,测得其发光效率高达364lm/W。
In this paper, the red shift of the color point of YAG: Ce phosphor has been studied. This phenomenon occurs when Y in the YAG lattice lattice is excited by Gd or Pr is added as a co-catalyst for Ce. The internal efficiencies of (Y, Gd) AG: Ce and YAG: Ce, Pr phosphors were measured and their excitation light wavelength was 470 nm. The results show that the luminescent efficiency of the two phosphors decreases with the accumulation of Gd and Pr, respectively. SrGa2S4: Eu. Is another commonly used phosphor that converts the color of blue LEDs. At room temperature, this phosphor is very efficient and theoretically emits 33% more luminous efficiency than YAG: Ce. The measurement of the efficiency of the phosphor shows that its production process is the main factor affecting the performance. The phosphor is printed on the surface of a screen placed in front of one or more blue LEDs and measured at a luminous efficiency of 364 lm / W.