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以氨水或碳酸铵为沉淀剂,采用共沉淀-水热合成法制备稀土掺杂铝酸锶发光纳米材料,并优化制备稀土掺杂铝酸锶发光材料的工艺条件。对激活剂、助激活剂、助熔剂的用量、体系的酸碱度和灼烧温度对目标产物发光性能的影响规律进行研究。结果表明:目标产物Sr2Al14O25:Eu2+,Dy3+属正交晶系,为蓝绿色长余辉纳米材料,主激发峰均在360 nm左右;氨水共沉淀法制备的产物主发射峰在490 nm,磷光衰减寿命约30 s;碳酸铵沉淀法制备的产物主发射峰在460 nm,磷光衰减寿命约15 s。
A rare earth doped strontium aluminate luminescent nanometer material was prepared by coprecipitation-hydrothermal synthesis method with ammonia or ammonium carbonate as precipitant, and the preparation conditions of rare earth-doped strontium aluminate luminescent material were optimized. The effects of activator, co-activator, flux dosage, system pH and burning temperature on the luminescent properties of the target product were studied. The results show that Sr2Al14O25: Eu2 +, Dy3 + is an orthorhombic crystal system with blue-green long-lasting nanomaterials. The main excitation peak is about 360 nm. The main emission peak of the product prepared by co-precipitation with ammonia is 490 nm. About 30 s; the main emission peak of the product prepared by ammonium carbonate precipitation is at 460 nm, and the phosphorescence decay lifetime is about 15 s.