对Ce3+ ∶Eu3+ ∶Cr3+ ∶Sm3+ ∶YAG处延层中的荧光敏化现象进行了报道和分析 ,在较高浓度的Ce3+ 离子掺杂时 ,外延层在蓝色、绿色波段出现了新的荧光谱线 ,可解释为在Ce3+ 离子敏化作用下 ,Eu3+ 离子产生了由高位激发态能级5Di(i=1,2 ,3)直接到基态能级7Fj(j =0 ,1,2 ,3)的辐射跃迁过程 ,并且这种Ce3+ ∶Eu3+ ∶Cr3+ ∶Sm3+ ∶YAG外延层还是一种新颖的白色单晶荧光材料。 Fluorescence sensitization in the epitaxial layer of Ce3 +: Eu3 +: Cr3 +: Sm3 +: YAG was reported and analyzed. At higher concentration of Ce3 + ions, a new fluorescence spectrum of the epitaxial layer appeared in the blue and green bands Line, it can be explained that Eu3 + ion generated from the high-order excited state 5Di (i = 1, 2, 3) directly to the ground state 7Fj (j = 0, 1, 2, 3) under the sensitization of Ce3 + Of the radiation transition process, and this Ce3 +: Eu3 +: Cr3 +: Sm3 +: YAG epitaxial layer is also a novel white single crystal fluorescent material.