Luminescence Characterization and Synthesis of γ-LiAlO_2:Eu~(3+) by Gel Combustion

来源 :Journal of Wuhan University of Technology(Materials Science | 被引量 : 0次 | 上传用户:wenxiaoyao1214
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γ-LiAlO2:Eu3+(Eu3+:LAO) phosphor was obtained by gel combustion method using LiNO3,Al(NO3)3·9H2O,Eu(NO3)3·6H2O and citric acid as raw materials.The structure,morphology and luminescence were characterized by means of X-ray diffraction (XRD),scanning electron microscopy (SEM),photoluminescence (PL).The results demonstrated that the phosphor was pure-phase of flaky tetragonal crystal system with a mean size of around 1 μm.The strongest excitation peak was at 254 nm,belonging to the broadband excitation and the maximum emission peak was at 613 nm,corresponding to the 5D0→7F2 transition of Eu3+.Luminous intensity is closely related to the calcination temperature and doping concentration of Eu3+. γ-LiAlO2: Eu3 + (Eu3 +: LAO) phosphor was obtained by gel combustion method using LiNO3, Al (NO3) 3 · 9H2O, Eu (NO3) 3 · 6H2O and citric acid as raw materials.The structure, morphology and luminescence were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL). The results demonstrated that the phosphor was pure-phase of flaky tetragonal crystal system with a mean size of around 1 μm. peak was at 254 nm, belonging to the broadband excitation and the maximum emission peak was at 613 nm, corresponding to the 5D0 → 7F2 transition of Eu3 + .Luminous intensity is closely related to the calcination temperature and doping concentration of Eu3 +.
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