A new rare-earth borate Na_3-3δEu_2+δ(BO₃)₃ (δ = 0.16) has been prepared using a high temperature flux method and structurally characterized by single-crystal X-ray diffraction analyses. The compound crystallizes in the orthorhombic space group Amm2 with a = 5.08902 (11) Å, b = 10.9754 (2) Å, c = 7.01996 (14) Å, V = 392.094 (14) ų, and Z = 2. It features a three-dimensional framework constructed by interconnecting NaO₆, EuO₉, (Na/Eu)O₈ distorted polyhedra, and BO₃ planar triangles. Furthermore, IR, Raman, XPS, and UV–vis absorption spectra as well as photoluminescence properties of this compound were studied. Under near-UV excitation (396 nm), Na_3-3δEu_2+δ(BO₃)₃ (δ = 0.16) exhibits an intense reddish-orange emission centered at around 614 nm with the CIE coordinates of (0.637, 0.363), which can be assigned to the electric dipole ⁵D₀→⁷F₂ transition of Eu³⁺ ions. The phosphor shows the stable luminescence and color purity at elevated temperature. We may expect it to be a potential reddish-orange phosphor pumped by near-UV LED chips.

一种新的稀土类硼酸钠_3-3δ的Eu _{2 +δ}（BO ₃）₃（δ= 0.16）已被使用高温焊剂方法制备并通过单晶X射线衍射分析进行结构表征。该化合物结晶的斜方晶系，空间群AMM 2与一个 = 5.08902（11）埃，b  = 10.9754（2）埃，c ^  = 7.01996（14）A，V  = 392.094（14）一种³，和ž  = 2。它具有通过互连NaO ₆，EuO ₉，（Na / Eu）O ₈扭曲多面体和BO ₃构造的三维框架平面三角形。此外，还研究了该化合物的IR，拉曼光谱，XPS和UV-vis吸收光谱以及光致发光特性。下近UV激发（396纳米），钠_3-3δ的Eu _{2 +δ}（BO ₃）₃（δ= 0.16）表现出强烈的红橙色发射中心在约614纳米，的CIE坐标（0.637，0.363） ，可以将其分配给Eu ³⁺离子的电偶极子⁵ D ₀ → ⁷ F ₂跃迁。磷光体在高温下显示稳定的发光和色纯度。我们可能希望它是由近紫外LED芯片泵浦的潜在的红橙色磷光体。