采用微波水热法制备Al2O3∶Eu3＋红色发光材料。通过XRD、SEM和荧光光谱对系列样品的物相、形貌、发光性质进行表征。XRD测试结果表明合成的样品为γ-Al2O3;SEM显示样品形貌为片组装成的微球;光致发光测试表明,Al2O3∶Eu3＋的发射以594nm的5 D0→7F1磁偶极跃迁为主,最佳激发波长为394nm。随着掺杂浓度的增大,样品5 D0→7F2电偶极跃迁强度变大,掺杂量为0.09%（摩尔分数）的样品在618nm的5 D0→7F2电偶极跃迁强度明显提高。
The Eu3＋ doped Al2O3 red phosphors materials was prepared by microwave hydrothermal,and studied by XRD,SEM and luminescence spectroscopy.XRD results indicated that Eu3＋ doped sample was γ-Al2O3.SEM showed that the particles of Al2O3∶Eu3＋ was a spherical shape packaged by nanosheets.The results of photoluminescence displayed that the main emission peaks of Al2O3∶Eu3＋ could be assigned to the magic dipole transition 5D0→7F1（594nm） and 394nm was the best excitation wavelength.Electric dipole 5D0→7F2 intensity of the sample could increase with the content of Eu3＋.When the content of Eu3＋ was up to 0.09mol%,electric dipole 5D0→7F2 intensity locating at 618nm briefly increased.
参考文献
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