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利用 ＳｒＣＯ３－Ａｌ２Ｏ３－ＲＥ（ＮＯ３）３（ＲＥ：Ｅｕ，Ｄｙ）粉体为原料．加入少量酒精，进行预混合、球磨、干燥。将此混合粉体在还原气氛下高温烧成，最终制得不同发先性能的ｘＳｒＯ·ｙＡｌ２Ｏ３： ＲＥ（ＲＥ：Ｅｕ，Ｄｙ）光致发光材料，并对其性能进行了研究。发光粉体的发射光谱表明，随着Ａｌ２Ｏ３／ＳｒＯ（摩尔比ｘ）的增加，其相应粉体发射光谱的主峰位置（λＥ）逐渐向短波方向移动，符合λＥ＝５３１．０１８－２３．０２８Ｘ关系式。余辉衰减曲线表明，这些发光材料均具有一定的长余辉特性。从而说明只要控制一定的Ａｌ２Ｏ３／ＳｒＯ比例，即可获得发光颜色为紫色到绿色的多种发光材料。对于其长余辉机制，认为是加入的 Ｄｙ３＋起到了陷阱能级的作用，它将部分空穴俘获，并在热扰动下，慢慢将空穴释放出来，并再次与介稳态 Ｅｕ１＋复合发光，从而达到延长余辉的作用。
Using SrCO3-Al2O3-RE (NO3) 3 (RE: Eu, Dy) powder as raw material. Add a small amount of alcohol, pre-mixed, ball mill, dry. The mixed powder was calcined at high temperature in a reducing atmosphere to obtain xSrO · yAl2O3: RE (RE: Eu, Dy) photoluminescence materials with different initial properties and their properties were studied. The emission spectrum of the luminescent powder shows that the main peak position (λE) of the corresponding powder emission spectrum gradually moves toward the short wavelength with the increase of the molar ratio of Al2O3 / SrO (λE = 531.018-23.028X) formula. Afterglow decay curves show that these luminescent materials have a certain long afterglow characteristics. This shows that as long as the control of a certain proportion of Al2O3 / SrO, you can get a light-emitting color purple to green variety of light-emitting materials. For its long afterglow mechanism, it is considered that the added Dy3 + plays a role of a trap level, which will trap some holes and slowly release the holes under the heat disturbance and recombine with the metastable Eu1 + So as to extend the role of afterglow.