Mn4+-doped Sr2CaWO6 red phosphors for enhanced forensic fingerprint analysis

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2026-05-01 Epub Date: 2026-01-28 DOI:10.1016/j.mseb.2026.119257

Sung Jun Park , Woo Tae Hong , Hyun Kyoung Yang

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引用次数: 0

Abstract

Mn⁴⁺ doped Sr₂CaWO₆ phosphors with different Mn⁴⁺ ion concentration (0.1, 0.3, 0.5, 0.7, 1.0, and 3.0 mol%) were synthesized using solid-state reaction method. The structure, composition, morphology, and photoluminescence of Sr₂CaWO₆:Mn⁴⁺ phosphors were investigated in this experiment. The Sr₂CaWO₆:Mn⁴⁺ phosphors have a well-crystallized structure. The particle size of Sr₂CaWO₆:Mn⁴⁺ phosphors is about several micrometers. The band gap value for Sr₂CaWO₆:Mn⁴⁺ phosphors is 3.70 eV. Sr₂CaWO₆:Mn⁴⁺ phosphors showed a deep red emission centered at 687 nm under excitation at 320 nm. The optimal doping concentration of Sr₂CaWO₆:Mn⁴⁺ phosphors was found to be 0.7 mol%. The prepared phosphors were employed for fingerprint visualization on several substrates (stainless steel, glass, plastic card, and currency), resulting in improved resolution of the fingerprint patterns. The detailed patterns of fingerprint with different levels (1–3) can be clearly observed. These results show that Sr₂CaWO₆:Mn⁴⁺ phosphors have promising applications for latent fingerprint detection.

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Mn4+掺杂Sr2CaWO6红色荧光粉用于增强法医指纹分析

采用固相反应法制备了不同Mn4+离子浓度（0.1、0.3、0.5、0.7、1.0、3.0 mol%）的Sr2CaWO6荧光粉。本实验研究了Sr2CaWO6:Mn4+荧光粉的结构、组成、形态和光致发光性能。Sr2CaWO6:Mn4+荧光粉具有良好的结晶结构。Sr2CaWO6:Mn4+荧光粉的粒径约为几微米。Sr2CaWO6:Mn4+荧光粉带隙值为3.70 eV。Sr2CaWO6:Mn4+荧光粉在320 nm激发下显示出以687nm为中心的深红色发光。发现Sr2CaWO6:Mn4+荧光粉的最佳掺杂浓度为0.7 mol%。将所制备的荧光粉用于多种基材（不锈钢、玻璃、塑料卡片和货币）上的指纹显示，提高了指纹图案的分辨率。可以清晰地观察到不同层次（1-3）指纹的详细纹样。这些结果表明Sr2CaWO6:Mn4+荧光粉在潜在指纹检测中具有很好的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.