In this paper, we report the experimental study of structural, spectral and luminescence properties of Scheelite SrWO₄:xEu³⁺(x = 0.01–0.09) phosphors with first principles ab-initio study of the electronic and mechanical properties. The first part of the paper devoted to experimental study of Scheelite SrWO₄:xEu³⁺(x = 0.01–0.09) phosphors synthesized by solid state method. The second part covers detailed ab-initio study of the electronic, elastic, optical and vibrational properties of both scheelite and fergusonite phases of SrWO₄. The synthesized scheelite SrWO₄ phosphors are characterized by Powder x-ray diffraction, UV–Visible, FTIR, Photoluminescence (PL) and cathodo-luminescence (CL). The photoluminescence (PL) properties of the Scheelite SrWO₄ doped Eu³⁺ phosphors were analyzed in detail. The PL emission spectra shows the strong and intense red emission corresponding to typical f-f transition of Eu³⁺ion. The intensity parameters (Ω₂ and Ω₄) of Eu³⁺ activated SrWO₄ phosphors are evaluated by Judd-Ofelt theory. Using these intensity parameters, branching ratio (β_R), radiative lifetime (τ_rad), the transition probabilities (A_T) are calculated. The color chromaticity coordinates (CIE) of the phosphors were also discussed in detail. Also, Computational studies shows the fergusonite phase exhibits better mechanical properties than scheelite structure.

在本文中，我们报告了 Scheelite SrWO ₄ :xEu ³⁺ (x = 0.01–0.09) 磷光体的结构、光谱和发光特性的实验研究，以及电子和机械特性的第一性原理ab-initio研究。论文的第一部分致力于通过固态方法合成白钨矿 SrWO ₄ :xEu ³⁺ (x = 0.01–0.09) 荧光粉的实验研究。第二部分详细介绍了 SrWO _{4 的}白钨矿相和镁橄榄石相的电子、弹性、光学和振动特性的从头算研究。合成的白钨矿SrWO ₄荧光粉的特征在于粉末 X 射线衍射、紫外-可见光、FTIR、光致发光 (PL) 和阴极发光 (CL)。详细分析了白钨矿SrWO ₄掺杂的Eu ³⁺磷光体的光致发光(PL)特性。PL 发射光谱显示了与典型的 Eu ³⁺离子的ff 跃迁相对应的强烈而强烈的红色发射。Eu ³⁺激活的SrWO ₄磷光体的强度参数（Ω ₂和Ω ₄）通过Judd-Ofelt理论评估。使用这些强度参数、分支比 (β _R )、辐射寿命 (τ _rad )、跃迁概率 (A _T) 计算。还详细讨论了荧光粉的色度坐标 (CIE)。此外，计算研究表明，镁钛矿相表现出比白钨矿结构更好的机械性能。