Li Xu, Pan Heng, Tang Aiwei, Zhang Jinping, Guan Li, Su Hongxin, Dong Guoyi, Yang Zhiping, Wang Huike, Teng Feng
J Nanosci Nanotechnol. 2016 Apr;16(4):3474-9. doi: 10.1166/jnn.2016.11847.
Eu3+ ions doped Sr3Al2O6 phosphors were successfully synthesized via a hydrothermal method. The precursor was prepared by low temperature hydrothermal method using ammonia as both alkaline source and precipitator. Then the final product was obtained by high temperature sintering. In addition, the structures, morphologies, and luminescent properties of as-prepared products were thoroughly characterized by X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), Fluorescence spectroscopy (PL). XRD shown a single phase Sr3Al2O6 prepared by a facile hydrothermal method at 250 °C for 10 h. In the PL spectra of as-prepared samples, the optimal value of Eu3+ concentration is 2 mol%. From the fluorescent spectra, the emission peaks of Sr3Al2O6: Eul+ phosphors are centered at around 591 nm, and the excitation peaks are centered at around 233 nm, 323 nm, 394 nm, and 468 nm, respectively, which were assigned to the characteristic transition of Eu3+ ions. The influence of ammonia, and the synthesis temperature on the luminescent properties of Sr3Al206: Eu3+ phosphors were studied in detail. The alkaline earth aluminates luminescent materials activated by rare earth ions have good prospects in the field of new-generation light sources.
采用水热法成功合成了Eu3+离子掺杂的Sr3Al2O6荧光粉。前驱体通过低温水热法制备，以氨水作为碱源和沉淀剂。然后通过高温烧结得到最终产物。此外，利用X射线粉末衍射（XRD）、扫描电子显微镜（SEM）、荧光光谱（PL）对所制备产物的结构、形貌和发光性能进行了全面表征。XRD表明，通过简便的水热法在250℃下反应10 h制备得到单相Sr3Al2O6。在所制备样品的PL光谱中，Eu3+浓度的最佳值为2 mol%。从荧光光谱来看，Sr3Al2O6:Eu3+荧光粉的发射峰集中在591 nm左右，激发峰分别集中在233 nm、323 nm、394 nm和468 nm左右，这些峰归因于Eu3+离子的特征跃迁。详细研究了氨水和合成温度对Sr3Al2O6:Eu3+荧光粉发光性能的影响。稀土离子激活的碱土铝酸盐发光材料在新一代光源领域具有良好的应用前景。
