采用溶液反应和固相反应 ,分别合成了KAlF4 基质化合物及KAlF4 ∶Gd和KAlF4 ∶Ce ,Gd等磷光体 ,研究了它们的光谱特性。结果表明 ,KAlF4 ∶Gd无论在短波或长波紫外辐射激发下 ,均无任何吸收和发射。在KAlF4 ∶Ce,Gd中 ,Ce3 + 离子能有效地将能量传递给Gd3 + 离子 ,使Gd3 + 产生了特征锐发射 ,且发射强度很大。但当Ce3 + 浓度固定不变 ,改变Gd3 + 的浓度时 ,Gd3 + 的 6P1/ 2 → 8S7/ 2 发射强度随Gd3 + 浓度的增大反而减弱。 The KAlF4 matrix compounds and KAlF4: Gd and KAlF4: Ce, Gd and other phosphors were synthesized by solution reaction and solid-state reaction, and their spectral properties were studied. The results show that KAlF4: Gd has no absorption and emission regardless of the excitation of shortwave or longwave ultraviolet radiation. In KAlF4: Ce, Gd, Ce3 + ions can effectively transfer energy to Gd3 + ions, resulting in the characteristic sharp emission of Gd3 + with strong emission intensity. However, when the concentration of Ce3 + is constant and the concentration of Gd3 + is changed, the emission intensity of 6P1 / 2 → 8S7 / 2 of Gd3 + decreases with the increase of Gd3 + concentration.