Defect Assisted Multicolor Luminescence in Borosilicate Photonic Glass for High‐Level Anticounterfeiting and X‐Ray Imaging

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Abstract Rare earth‐doped glasses have attracted extensive attention due to their excellent luminescent property. It is of great significance for the development optical functional glass obtain unique properties through structural regulation. Here, via optimization, multicolor borosilicate with dual luminescence centers (Ce 3 ⁺ ions and oxygen vacancy defect) are obtained. Leveraging distinct traits these two centers, tunable colors ranging from purple orange–red achieved by varying excitation wavelength temperature. Under X‐ray excitation, exhibit one highest scintillation intensities (85.69% Bi 4 Ge O 12 crystal) among Ce 3+ ‐doped reported in recent years, imaging resolution (11 LP mm −1 ) comparable CsI:Tl crystal. Capitalizing on characteristics performance, a 3D anti‐counterfeiting scheme an model developed, demonstrating promising practical applications. After being stored under ambient conditions intensity retains more than 98% its initial value, underscoring exceptional stability glass. This work not only presents multifunctional material high‐level but also provides insights into design.

Language: Английский

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Multicolor Persistent Luminescence for High-Sensitivity Optical Temperature Sensing, Human Motion Detection, and Multimodal Anticounterfeiting Materials

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Multimodal luminescent materials are widely used in noncontact temperature sensors and fluorescent dynamic anticounterfeiting due to their visible persistent luminescence fast optical signal response. To this end, CaY0.99GaO4: 0.01 Bi3+; CaY0.92GaO4: Bi3+, 0.07Eu3+; CaY0.96GaO4: 0.03Er3+ phosphors were prepared using the high-temperature solid-state method. The down-conversion luminescence, up-conversion long mechanical of studied, achieving multicolor luminescence. It was found that 0.07Eu3+ phosphor achieves maximum relative sensitivity 1.49% K-1. These show great potential for applications detection. Through density functional theory electron localization function analysis, multimodal CaYGaO4: Eu3+/Er3+ studied. ion doping leads a decrease band gap induces Jahn-Teller effect, creating lower energy channels accelerate carrier release enhance performance. This is fundamental reason realization human motion Subsequently, novel sensing device detection developed high performance phosphor. properties demonstrated static-dynamic applications. Finally, it stability wide defect states provide new approach sensors, detection, information storage, anticounterfeiting.

Language: Английский

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Cost-efficient phosphor materials with defect-induced luminescence based on sodium chloride and potassium chloride

Applied Materials Today, Journal Year: 2025, Volume and Issue: 44, P. 102736 - 102736

Published: April 25, 2025

Language: Английский

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Investigation on the highly fluorescent IRMOF-3/thiol-ene polymer and its ligand-based composite with 76% quantum yield

Optical Materials, Journal Year: 2025, Volume and Issue: 166, P. 117222 - 117222

Published: June 2, 2025

Language: Английский

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