This paper reports the synthesis, structural, thermal and luminescence properties of Sr_1−xZrSi₂O₇:xEu³⁺ (x = 0.01 ≤ x ≤ 0.05 mol) phosphors by solid-state reaction method in air. The optimal Eu³⁺ ion concentration in Sr_1−xZrSi₂O₇:xEu³⁺ phosphor is 0.04 mol. The monoclinic crystal structure with P21/c space group was confirmed by the powder X-ray diffractometry (PXRD) technique. Thermal behavior of the present phosphors was investigated which shows better characteristics. Under 396 nm excitation, Eu³⁺ ions activated Sr_1−xZrSi₂O₇ phosphors exhibited a strong red emission centered at 617 nm due to the f–f transition of ⁵D₀ → ⁷F₂ transition. The critical doping concentration of Eu³⁺ ion was x = 0.04 mol and the critical distance was determined as 19.1117 Å. The energy transfer among Eu³⁺ ions in Sr_1−xZrSi₂O₇ phosphors was found to be a dipole–dipole interaction. Consequently, optimal phosphor shows a thermal stability up to 420 K, superior to that in analogous reports. And the quantum efficiency of prepared Sr_1−xZrSi₂O₇:xEu³⁺ phosphor with 396 nm excitation was calculated to be nearly 72%. The photometric results indicate that the synthesized Orange-Red phosphor can be potentially applicable for solid-state lighting and display devices applications.

本文报道了 在空气中采用固相反应法合成Sr _{1 −x} ZrSi ₂ O ₇ : x Eu ³⁺ ( x  = 0.01 ≤  x ≤ 0.05 mol)荧光粉的合成、结构、热学和发光性能。 Sr _{1 -x} ZrSi ₂ O ₇ : x Eu ^{3+荧光粉中Eu 3+}离子的最佳浓度为0.04 mol。通过粉末X射线衍射(PXRD)技术证实了具有P21/c空间群的单斜晶体结构。研究了本荧光粉的热行为，显示出更好的特性。在396 nm激发下，Eu ³⁺离子激活的Sr _{1 -x} ZrSi ₂ O ₇荧光粉由于⁵ D ₀  →  ⁷ F ₂跃迁的f-f跃迁而表现出以617 nm为中心的强红色发射。 Eu ³⁺离子的临界掺杂浓度为x  = 0.04 mol，临界距离确定为19.1117 Å。发现Sr _{1 -x} ZrSi ₂ O _{7荧光粉中Eu} ³⁺离子之间的能量转移是偶极-偶极相互作用。因此，最佳荧光粉显示出高达 420 K 的热稳定性，优于类似报告中的热稳定性。计算所得Sr _{1 -x} ZrSi ₂ O ₇ : x Eu ³⁺荧光粉在396 nm激发下的量子效率接近72%。光度测量结果表明，合成的橙红色荧光粉可能适用于固态照明和显示设备应用。