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采用共沉淀法合成了 YAG:Ce3 + (Y3 Al5O12 :Ce3 + )光致发光荧光粉并测定了其激发光谱、发射光谱及粒度对发光强度的影响。结果表明 ,YAG:Ce3 + 荧光粉激发光谱为双峰结构 ,两主峰分别位于近紫外和可见光区 ,发射光谱为宽峰 ,峰值为 5 5 0 nm。X射线衍射 (XRD)分析表明该发光粉为纯 YAG晶相。
The YAG: Ce3 + (Y3Al5O12: Ce3 +) photoluminescent phosphor was synthesized by co-precipitation method and the effect of its excitation spectrum, emission spectrum and particle size on the luminescence intensity was measured. The results show that the excitation spectrum of YAG: Ce3 + phosphor has a bimodal structure. The two main peaks are located in the near ultraviolet and visible region, respectively. The emission spectrum is broad peak with a peak value of 5500 nm. X-ray diffraction (XRD) analysis showed that the luminescent powder is a pure YAG crystal phase.