Abstract Single-phase Y2BaAl4SiO12:Tb3+,Eu3+ phosphors with adjustable luminescence were successfully prepared by high-temperature solid-state reaction method. The structural, luminescent properties and energy transfer (ET) process of Y2BaAl4SiO12:Tb3+,Eu3+ phosphors were systematically analyzed with the help of X-ray diffraction (XRD), scanning electron microscopy (SEM), excitation spectra, emission spectra and photoluminescence decay curves. Tunable luminescence ranging from green through yellow and definitively to red can be achieved by elevating amounts of Eu3+ ions in Tb3+,Eu3+ co-doped samples. Besides, the ET mechanism and efficiency were also analyzed and the maximum ET efficiency is 67%. All the results show that Y2BaAl4SiO12:Tb3+,Eu3+ phosphors can be used in solid-state lighting.

中文翻译：

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用于固态照明的 Y2BaAl4SiO12:Tb3+,Eu3+ 荧光粉中的可调发光和能量转移☆

摘要 采用高温固相反应法成功制备了发光可调的单相Y2BaAl4SiO12:Tb3+,Eu3+荧光粉。借助X射线衍射（XRD）、扫描电子显微镜（SEM）、激发光谱、发射光谱和光致发光衰减曲线，系统地分析了Y2BaAl4SiO12:Tb3+,Eu3+荧光粉的结构、发光特性和能量转移（ET）过程. 通过提高 Tb3+、Eu3+ 共掺杂样品中 Eu3+ 离子的量，可以实现从绿色到黄色以及最终到红色的可调发光。此外，还分析了ET机理和效率，最大ET效率为67%。所有结果表明Y2BaAl4SiO12:Tb3+,Eu3+荧光粉可用于固态照明。