Fingerprints are widely studied due to their unique shape and lifelong properties. The latent fingerprint (LFP) visualization is critical in identifying crime scenes and personal information. At present, the powder dusting method for LFP detection is favored due to its environmental friendliness and nontoxicity. However, this method has low resolution, low sensitivity, and large background interference. To address these shortcomings, the red-emitting Sr₂MgMoO₆:xEu³⁺ (x = 0–0.50) phosphors were synthesized using the solid-state reaction process. The products were systematically studied through the structural phase, luminescent property, decay curve, and color purity. Sr₂MgMoO₆:xEu³⁺ phosphors were monitored at 596 nm and exhibited a commendable broad excitation band between 250 and 475 nm. This result indicated that the disadvantage of the poor absorption of commercial red phosphors (Y₂O₂S:Eu³⁺) in the near-ultraviolet region was overcome. Under excitation at 393 nm, the synthesized Sr₂MgMoO₆:Eu³⁺ phosphor exhibited intense red light at 596 and 616 nm, due to the ⁵D₀ → ⁷F₁ and ⁵D₀ → ⁷F₂ transitions of Eu³⁺ ions. The optimal concentration for the Sr₂MgMoO₆:xEu³⁺ phosphor was x = 20 mol%, and the concentration quenching effect was ascribed to the dipole–dipole interaction. The Commission International del′Eclairage (CIE) chromaticity coordinates of Sr₂MgMoO₆:Eu³⁺ were (0.643, 0.356), and the color purity was 99.8%. Furthermore, the fluorescent LFP images developed by Sr₂MgMoO₆:0.20Eu³⁺ phosphors were well visualized, and level 1–3 details were well identified with high resolution, contrast, sensitivity, and selectivity. The obtained results suggested that the Sr₂MgMoO₆:Eu³⁺ phosphor can be applied for LFP detection.

指纹因其独特的形状和终身特性而被广泛研究。潜在指纹（LFP）可视化对于识别犯罪现场和个人信息至关重要。目前，用于LFP检测的粉末除尘方法由于其环境友好和无毒而受到青睐。但是，该方法分辨率低，灵敏度低，背景干扰大。为了解决这些缺点， 使用固态反应过程合成了发红光的Sr ₂ MgMoO ₆：x Eu ³⁺（x = 0-0.50）荧光粉。通过结构相，发光性质，衰减曲线和色纯度系统地研究了产物。锶₂ MgMoO₆：x Eu ³⁺磷光体在596 nm处进行监测，并在250至475 nm之间显示出值得称赞的宽激发带。该结果表明，克服了在近紫外线区域中商业红色磷光体（Y ₂ O ₂ S：Eu ³⁺）吸收差的缺点。在393 nm激发下，由于⁵ D ₀  →  ⁷ F ₁和⁵ D ₀  →  ⁷ F ₂，合成的Sr ₂ MgMoO ₆：Eu ³⁺荧光粉在596和616 nm处显示出强烈的红光。Eu ³⁺离子的跃迁。Sr ₂ MgMoO ₆：x Eu ³⁺荧光粉的最佳浓度为x  = 20 mol％，并且浓度猝灭效应归因于偶极-偶极相互作用。Sr ₂ MgMoO ₆：Eu ³⁺的Commission International del'Eclairage（CIE）色度坐标为（0.643，0.356 ），色纯度为99.8％。此外，由Sr ₂ MgMoO ₆：0.20Eu ³⁺显影的荧光LFP图像荧光粉清晰可见，并以高分辨率，对比度，灵敏度和选择性很好地识别了1-3级细节。获得的结果表明，Sr ₂ MgMoO ₆：Eu ³⁺荧光粉可用于LFP检测。