色度
荧光粉
发光
激发态
兴奋剂
指纹(计算)
离子
材料科学
猝灭(荧光)
分析化学(期刊)
化学
光学
光电子学
荧光
计算机科学
原子物理学
人工智能
物理
色谱法
有机化学
作者
Sichun Li,Jing Guo,Wen Shi,Xiaopeng Hu,Shanshan Chen,Junmeng Luo,Yuxin Li,Jia Kong,Junzhi Che,Haiqiang Wang,Bin Deng,Ruijin Yu
标识
DOI:10.1016/j.jlumin.2021.118681
摘要
LaNb2VO9:Dy3+ yellow phosphors were synthesized by high-temperature solid-state method. The luminescent properties, structure, and color purity of the products were studied systematically. LaNb2VO9:Dy3+ phosphors can be effectively excited by two broad charge transfer bands (CTB) under 307 nm excitation. The strong yellow light at 570 nm was caused by the 4F9/2 → 6H13/2 energy level transition of Dy3+. The optimum doping concentration of LaNb2VO9:xDy3+ phosphor was x = 0.10 mol, and the dominant factor of concentration quenching effect is the nearest-neighbor ions interaction. The chromaticity coordinates of International Committee LaNb2VO9:Dy3+ were located in the yellow color area. In addition, LaNb2VO9:0.1Dy3+ phosphor can well visualize the latent fingerprint (LFP) image and lip print image. The levels 1–3 features of fingerprint and groove pattern of lip print can be easily recognized, with high resolution and contrast. The experimental results showed LaNb2VO9:Dy3+ can be well applied to LFP and lip print detection.
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