Na5Y(WO4)4: 6 % Eu3+, 6 % R+ (R = Li, Na, K) phosphors were synthesized using a high-temperature solid-state reaction method. Through a series of characterization methods, the crystal structure, morphology, composition, and luminescence properties of the sample are obtained. At the same time, the properties of Na5Y(WO4)4: Eu3+ phosphor added with alkali metal ions such as Li+, Na+, K+ were also studied. The experiment showed the red light emission and fluorescence lifetime of Na5Y(WO4)4: 6 % Eu3+ are improved through the doping of low concentration alkali metal agents, and Na5Y(WO4)4: 6 % Eu3+, 6 % Li+ obtained the strongest red light emission intensity. The results indicate that the red emissions intensity of Na5Y(WO4)4: Eu3+ can be enhanced through the Li+ alkali metal agents, which may lead to less use of Y3+ and hence lower cost.

中文翻译：

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Eu3+和碱金属离子掺杂Na5Y(WO4)4的红色发光特性

钠5Y(WO4）4: 6% 欧盟3+, 6% R+采用高温固相反应法合成了（R=Li、Na、K）荧光粉。通过一系列表征方法，获得了样品的晶体结构、形貌、成分和发光性能。同时，Na的性质5Y(WO4）4： 欧洲联盟3+添加Li等碱金属离子的荧光粉+, 钠+, K+也进行了研究。实验显示Na的红光发射和荧光寿命5Y(WO4）4: 6% 欧盟3+通过低浓度碱金属剂的掺杂改善，Na5Y(WO4）4: 6% 欧盟3+, 6% 锂+获得了最强的红光发射强度。结果表明Na的红光发射强度5Y(WO4）4： 欧洲联盟3+可以通过Li来增强+碱金属试剂，这可能导致Y用量减少3+从而降低成本。