A new solid solution Bi_1.48Eu_0.52Pb_0·5Sr_0·5B₂O₇ was prepared by the high-temperature solid state reaction at 850 °C and its crystal structure was determined by single-crystal XRD analysis with following crystal data: R$\overline{3}$c, a = 9.0085(2) Å, c = 38.8910(9) Å, V = 2733.26(13) ų and Z = 18. It has a layered structure in which alternating [BO₃]^3- triangles and [(Pb/Sr)O₆]¹⁰⁻ trigonal prisms are connected via common O vertexes to generate a 2D layer, with [(Bi/Eu)₂O]⁴⁺ groups located in the six-membered ring channels within the layer. Two $\overline{3}$ axis related layers are stacked rhombohedrally along the c-axis to build a unit cell and held together by weak (Bi/Eu)-O bonds. The existence of BO₃ groups was confirmed by vibrational spectroscopy, the optical band gap was determined with the UV–vis absorption measurements, and the chemical states of the elements were analyzed by XPS spectroscopy. Furthermore, the Bi_2-xPb_0.5Sr_0·5B₂O₇:xEu³⁺ (0.10 ≤ x ≤ 0.50) phosphors were synthesized via the solid-state reaction method and their photoluminescence properties were studied. The emission spectra consist of groups of peaks in the red spectral region due to ⁵D₀→⁷F_j (j = 0, 1, 2, 3) electronic transitions of Eu³⁺ ions and the optimal Eu³⁺ content was found to be x = 0.3. The CIE coordinates of the Bi_1.70Eu_0.30Pb_0·5Sr_0·5B₂O₇ phosphor was obtained to be (0.640, 0.359) and the QE value was equal to 15.41%. Moreover, its synthetic temperature is low. The characteristics make the Bi_2-xPb_0.5Sr_0·5B₂O₇:xEu³⁺ (0.10 ≤ x ≤ 0.50) compounds to be promising reddish-orange phosphors for white LEDs.

通过在850℃下高温固相反应制备了新的固溶体Bi _1.48 Eu _0.52 Pb _{0 · 5} Sr _{0 · 5} B ₂ O _7，并通过单晶XRD分析和下列晶体数据确定了其晶体结构。 ：R$\overline{3}$Ç，一个 = 9.0085（2）埃，c ^  = 38.8910（9）埃，V  = 2733.26（13）一种³和Ž  = 18。它有一个分层结构，其中交替的[BO ₃ ] ^3-三角形和[（铅/ Sr）O ₆ ]通过共同的O顶点连接^10-三角棱镜以生成2D层，其中[（Bi / Eu）₂ O] ⁴⁺组位于该层内的六元环通道中。二$\overline{3}$轴相关的层沿c轴菱形地堆叠以构建晶胞，并通过弱（Bi / Eu）-O键保持在一起。通过振动光谱法确认了BO ₃基团的存在，通过紫外-可见吸收测量确定了光学带隙，并通过XPS光谱法分析了元素的化学态。此外，碧_2-X的Pb _0.5锶_{0 · 5}乙₂ ö ₇：XEU ³⁺（0.10≤ X  ≤0.50）磷光体合成通过研究了固相反应方法及其光致发光性质。发射光谱由红色光谱区中的峰组组成，这归因于Eu ³⁺离子的⁵ D ₀ → ⁷ F _j（j = 0，1，2，3）电子跃迁，并且最佳的Eu ³⁺含量为是x = 0.3。Bi _1.70 Eu _0.30 Pb _{0 · 5} Sr _{0 · 5} B ₂ O ₇的CIE坐标得到的荧光粉为（0.640，0.359），并且QE值等于15.41％。而且，其合成温度低。该特性使得碧_2-X的Pb _0.5锶_{0 · 5}乙₂ ö ₇：XEU ³⁺（0.10≤ X  ≤0.50）的化合物是有前途白光LED的红橙色磷光体。